CN111999024B

CN111999024B - Vibration force frequency monitoring equipment for vibration applying oil cylinder for hydraulic dynamic test bed

Info

Publication number: CN111999024B
Application number: CN202011163510.2A
Authority: CN
Inventors: 孙剑; 张小虎; 陈汉斌
Original assignee: Jiangsu Xuanrui Vibration Damping Equipment Co ltd
Current assignee: Jiangsu Xuanrui Vibration Damping Equipment Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-01-05
Anticipated expiration: 2040-10-27
Also published as: CN111999024A

Abstract

The invention relates to a vibration force frequency monitoring device of a vibration applying oil cylinder for a hydraulic dynamic test bed, which comprises a workbench, wherein support columns are welded and connected to the periphery of the bottom end of the workbench respectively, a first threaded rod is connected to the inner portion of the lower end of each support column in a threaded mode, a base plate is connected to the bottom end of each first threaded rod in a welded mode, and a display is placed on one side of the top end of the workbench. According to the invention, when the vibration cylinder body pushes the pressing plate to extrude the workpiece to be detected to perform vibration monitoring, the compression springs in the grooves on the two sides of the pressing plate can extrude the C-shaped plate to move towards the supporting rod, so that the roller wheel inside the pressing plate is tightly attached to the supporting rod, the roller wheel rotates through the first bearing, the lifting movement of the pressing plate can be assisted, the pressing plate is more stable in the lifting process, the pressing plate is prevented from shaking to cause the workpiece to be detected to loose and fall off in the vibration applying operation process of the pressing plate, the vibration applying of the pressing plate is more uniform, and the detection accuracy is improved.

Description

Vibration force frequency monitoring equipment for vibration applying oil cylinder for hydraulic dynamic test bed

Technical Field

The invention relates to a vibration force frequency monitoring device of a vibration applying oil cylinder for a hydraulic dynamic test bed, belonging to the technical field of vibration applying oil cylinder monitoring.

Background

In a key equipment evaporator and a main pump coolant system, a hydraulic damper has small damping on the change of the spatial position, once a pipe is broken or a strong earthquake occurs, a locking valve of the damper is closed rapidly, the oil flow between a front cavity and a rear cavity of a piston in a damping hydraulic cylinder is stopped, the hydraulic damper is enabled to be a hydraulic spring instantly, the impact force of the broken pipe or the earthquake is buffered by the rigidity of a cylinder body and the elasticity of the damper, a steam generator and a main pump are protected safely, the accident load which the hydraulic damper should bear under the accident working condition is determined through strict theoretical calculation and model test, whether the hydraulic damper manufactured according to the theoretical design of machinery, hydraulic pressure and the like can really bear the responsibility of shock resistance and shock resistance is determined, the experiment is required, and the frequency of the shock force is monitored in the experiment process so as to record experiment data.

The vibration force frequency monitoring equipment of the vibration oil cylinder for the existing hydraulic dynamic test bed can not enable a pressing plate for transmitting vibration force to stably move in the using process of the equipment, so that the position of an extruded workpiece is not accurate, the vibration force is unbalanced easily caused in the vibration applying process, and the caused monitoring data is not uniform.

Disclosure of Invention

The invention aims to solve the problems that the vibration force frequency monitoring equipment of the vibration applying oil cylinder for the existing hydraulic dynamic test bed cannot enable a pressing plate for transmitting the vibration force to stably move, so that the position of an extruded workpiece is not accurate, the vibration applying force is unbalanced in the vibration applying process, and the monitoring data is not accurate.

In order to solve the technical problems, the invention provides the following technical scheme: a vibration force frequency monitoring device of a vibration oil cylinder for a hydraulic dynamic test bed comprises a workbench, wherein support columns are welded on the periphery of the bottom end of the workbench respectively, a first threaded rod is connected with the inner threads of the lower ends of the support columns in a welded mode, a base plate is connected with the bottom end of the first threaded rod in a welded mode, a display is placed on one side of the top end of the workbench, a support rod is fixedly connected with the other side of the top end of the workbench, an electric sliding rail is connected with the workbench in an embedded mode, an electric sliding block is inserted into the electric sliding rail in a sleeved mode, the electric sliding block is connected with a mounting plate in a welded mode, a vibration oil cylinder body is fixedly connected to the bottom end of the mounting plate, a pressing plate is fixedly connected to the bottom end of the vibration oil cylinder body, a stabilizing mechanism is installed between the pressing plate and the support columns, grooves, and inner wall one side fixedly connected with compression spring of recess, the flexible interior pole of other end fixedly connected with of compression spring, and the other end fixedly connected with C template of flexible interior pole, the inner wall both sides fixedly connected with primary shaft of C template, and primary shaft rotates and is connected with the running roller, feed mechanism is installed to the inside lower extreme of bracing piece, and feed mechanism's bottom installs monitoring mechanism, the mechanism is slowly pressed to the feed mechanism both sides are installed.

Furthermore, the roller wheel is movably connected with the surface of the supporting rod, and the roller wheel and the C-shaped plate form a rotating structure through the first bearing.

Further, the C-shaped plate is movably connected with the surface of the supporting rod, the telescopic inner rod is movably sleeved with the inner part of the groove, and the C-shaped plate forms an elastic telescopic structure through the telescopic inner rod, the compression spring and the groove.

Further, the feeding mechanism comprises a bearing plate inside, the bearing plate is movably connected with the inner wall of the supporting rod, the top end of the bearing plate is provided with a first chute, a first sliding block is sleeved and inserted in the first sliding groove, the top end of the first sliding block is fixedly connected with a supporting plate, the inner thread of the supporting plate is connected with a first hand-screwed bolt, the first hand-screwed bolt is movably connected with the inner part of the first sliding chute, the two sides of the top end of the supporting plate are fixedly connected with supporting plates, and the inner wall of the supporting plate is fixedly connected with a second bearing, the second bearing is rotatably connected with a connecting rod, the other end of the connecting rod is rotatably connected with a movable shaft, and the other end of the movable shaft is fixedly connected with a resisting plate, the inner thread of the supporting plate is connected with a second hand-screwed bolt, and the other end of the second hand-screwed bolt is fixedly connected with a clamping plate.

Further, swing joint between splint and the connecting rod one side, and splint constitute extending structure between through the second hand bolt of twisting and the backup pad, the connecting rod passes through and constitutes revolution mechanic between second bearing and the backup pad, the loading board passes through and constitutes sliding construction between first sliding block and the first spout, and the loading board is twisted through first hand and is constituted fixable structure between bolt and the first spout.

Further, the inside of monitoring mechanism is including four third bearings, and is fixed connection between the top of third bearing and workstation, the top of third bearing is rotated and is connected with the sleeve, and telescopic inside threaded connection has the second threaded rod, the top fixedly connected with of second threaded rod places the board, and the top swing joint who places the board has the vibration frequency tester to this vibration frequency tester and loading board bottom swing joint.

Furthermore, the placing plate forms a lifting structure through the second threaded rod and the sleeve, and the sleeve forms a rotating structure through the third bearing and the workbench.

Further, the inside of pressure relief mechanism is including the second spout, and the second spout constitutes the integration through the fluting between respectively and the bracing piece inner wall and is connected, the inside of second spout cup joints and inserts and is equipped with the second sliding block, and the second sliding block respectively with be fixed connection between the loading board both ends, the bottom fixedly connected with bradyseism spring of loading board, and be fixed connection between the top of bradyseism spring and workstation.

Furthermore, the bearing plate forms a sliding structure through the second sliding block and the second sliding groove, and the bearing plate and the workbench are parallel.

The invention has the technical effects and advantages that:

1. according to the invention, under the action of the stabilizing mechanism, when the vibration applying oil cylinder body pushes the pressing plate to extrude the workpiece to be detected to perform vibration monitoring, the compression springs in the grooves on the two sides of the pressing plate can extrude the C-shaped plate to move towards the supporting rod, so that the roller wheel inside the C-shaped plate is tightly attached to the supporting rod, the roller wheel rotates through the first bearing, the lifting movement of the pressing plate can be assisted, the pressing plate is more stable in the lifting process, the pressing plate is prevented from shaking to cause the workpiece to be loosened and fall off in the vibration applying operation process of the pressing plate on the workpiece to be detected, the vibration applying effect of the workpiece to be detected can be more uniform.

2. According to the invention, under the action of the feeding mechanism, a workpiece to be detected can be placed through the bearing plate, the supporting plate can be pulled to slide in the first sliding groove through the first sliding block, the distance between the supporting plates is adjusted, the connecting rod can enable the abutting plates at the top end of the connecting rod to be attached to two sides of the workpiece through the rotation angle of the second bearing, the workpiece to be detected is prevented from shaking when being subjected to vibration, the stability of the workpiece is improved, and the workpiece is prevented from being deviated, and is prevented from being extruded and damaged by vibration.

3. According to the invention, under the action of the monitoring mechanism, the sleeve is rotated to enable the second threaded rod in the sleeve to move up and down, so that the placing plate and the vibration frequency tester at the top end are driven to move up and down, the vibration frequency tester can be attached to the bottom end of the bearing plate, the vibration frequency of the bearing plate is transmitted through a workpiece, the vibration frequency of the bearing plate is monitored in real time, meanwhile, the height of the placing plate is adjusted, so that the vibration frequency testers with different specifications can be attached to the bottom end of the bearing plate, the operation is simple, and the vibration frequency testers can be flexibly replaced.

4. According to the invention, under the action of the pressure relief mechanism, when the bearing plate and the workpiece to be detected are subjected to vibration, the vibration force applied to the bearing plate can be relieved through the vibration relief spring, so that the bearing plate is prevented from being damaged due to long-term vibration, the service life of the bearing plate is prolonged, and the bearing plate is prevented from being frequently replaced.

5. According to the invention, the first threaded rod can rotate, lift and move in the support column by rotating the base plates, and the distance between the four base plates and the workbench is adjusted, so that the height and the levelness of the workbench can be adjusted, and the workbench is prevented from being obliquely installed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the stabilizing mechanism of the present invention;

FIG. 3 is a schematic structural view of a loading mechanism according to the present invention;

FIG. 4 is a schematic structural diagram of a part of a side view of a feeding mechanism in the invention;

FIG. 5 is a schematic view of the monitoring mechanism of the present invention;

fig. 6 is a schematic structural view of the pressure relief mechanism of the present invention.

Reference numbers in the figures: 1. a work table; 2. a support pillar; 3. a first threaded rod; 4. a base plate; 5. a display; 6. a support bar; 7. an electrical slide rail; 8. an electrical slider; 9. mounting a plate; 10. a vibration applying oil cylinder body; 11. a stabilizing mechanism; 1101. a groove; 1102. a compression spring; 1103. a telescopic inner rod; 1104. c-shaped plates; 1105. a first bearing; 1106. a roller; 12. a feeding mechanism; 1201. a carrier plate; 1202. a first chute; 1203. a first slider; 1204. a support plate; 1205. screwing the bolt by a first hand; 1206. a support plate; 1207. a second bearing; 1208. a connecting rod; 1209. a movable shaft; 1210. a resisting plate; 1211. screwing a bolt by a second hand; 1212. a splint; 13. a monitoring mechanism; 1301. a third bearing; 1302. a sleeve; 1303. a second threaded rod; 1304. placing the plate; 1305. a vibration frequency tester; 14. a pressure relief mechanism; 1401. a second chute; 1402. a second slider; 1403. a cushioning spring; 15. and (7) pressing a plate.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

As shown in fig. 1-6, a vibration force frequency monitoring device for a vibration cylinder of a hydraulic dynamic test bed comprises a workbench 1, wherein the periphery of the bottom end of the workbench 1 is welded with support pillars 2, the lower ends of the support pillars 2 are connected with first threaded rods 3 in a threaded manner, the bottom ends of the first threaded rods 3 are welded with backing plates 4, one side of the top end of the workbench 1 is provided with a display 5, the other side of the top end of the workbench 1 is fixedly connected with a support rod 6, the workbench 1 is connected with an electric slide rail 7 in an embedded manner, an electric slide block 8 is inserted in the electric slide rail 7 in a sleeved manner, the electric slide block 8 is connected with a mounting plate 9 in a welded manner, the bottom end of the mounting plate 9 is fixedly connected with a vibration cylinder body 10, the bottom end of the vibration cylinder body 10 is fixedly connected with a pressing plate 15, a stabilizing mechanism 11 is arranged between the pressing plate 15 and the support pillars, the groove 1101 is connected with the two sides of the pressing plate 15 in an integrated manner through grooves, a compression spring 1102 is fixedly connected to one side of the inner wall of the groove 1101, an inner telescopic rod 1103 is fixedly connected to the other end of the compression spring 1102, a C-shaped plate 1104 is fixedly connected to the other end of the inner telescopic rod 1103, first bearings 1105 are fixedly connected to two sides of the inner wall of the C-shaped plate 1104, rollers 1106 are rotatably connected to the first bearings 1105, the feeding mechanism 12 is installed at the lower end of the inner portion of the supporting rod 6, the monitoring mechanism 13 is installed at the bottom end of the feeding mechanism 12, the pressure relieving mechanisms 14 are installed on two sides of the feeding mechanism 12, the compression spring 1102 in the groove 1101 can extrude the C-shaped plate 1104 to move towards the supporting rod 6, and the rollers 1106.

The roller 1106 is movably connected with the surface of the support rod 6, the roller 1106 forms a rotating structure with the C-shaped plate 1104 through the first bearing 1105, and the roller 1106 rotates through the first bearing 1105.

The C-shaped plate 1104 is movably connected with the surface of the supporting rod 6, the telescopic inner rod 1103 and the groove 1101 are movably sleeved, and the C-shaped plate 1104 forms an elastic telescopic structure through the telescopic inner rod 1103, the compression spring 1102 and the groove 1101, so that the pressing plate 15 can be assisted to stably move up and down.

As shown in fig. 3 and 4, the loading mechanism 12 of this embodiment includes a loading plate 1201 inside, the loading plate 1201 is movably connected to the inner wall of the supporting rod 6, a first sliding slot 1202 is formed at the top end of the loading plate 1201, a first sliding block 1203 is inserted into the first sliding slot 1202, a supporting plate 1204 is fixedly connected to the top end of the first sliding block 1203, a first hand bolt 1205 is connected to the internal thread of the supporting plate 1204, the first hand bolt 1205 is movably connected to the inside of the first sliding slot 1202, supporting plates 1206 are fixedly connected to both sides of the top end of the supporting plate 1204, a second bearing 1207 is fixedly connected to the inner wall of the supporting plate 1206, a connecting rod 1208 is rotatably connected to the second bearing 1207, a movable shaft 1209 is rotatably connected to the other end of the connecting rod 1208, a supporting plate 1210 is fixedly connected to the other end of the movable shaft 1209, a second hand bolt 1211 is connected to the, and the other end of the second hand-screwed bolt 1211 is fixedly connected with a clamping plate 1212, and when the supporting plate 1204 is pulled, the supporting plate 1204 can slide in the first sliding groove 1202 through a first sliding block 1203, so that the proper distance between the supporting plates 1204 can be adjusted.

Swing joint between splint 1212 and connecting rod 1208 one side, and splint 1212 constitutes extending structure through screwing between bolt 1211 and the backup pad 1206 for the second hand, connecting rod 1208 constitutes revolution mechanic through between second bearing 1207 and the backup pad 1206, loading board 1201 passes through and constitutes sliding structure between first sliding block 1203 and the first spout 1202, and loading board 1201 constitutes fixable structure through screwing between bolt 1205 and the first spout 1202 for the first hand, rotate connecting rod 1208, connecting rod 1208 can rotate through second bearing 1207, it laminates in the work piece both sides to drive to support board 1210, support its work piece both sides.

As shown in fig. 5, the monitoring mechanism 13 of this embodiment includes four third bearings 1301 inside, the third bearings 1301 are fixedly connected to the top end of the workbench 1, the top end of the third bearings 1301 is rotatably connected to a sleeve 1302, the inner threads of the sleeve 1302 are connected to a second threaded rod 1303, the top end of the second threaded rod 1303 is fixedly connected to a placing plate 1304, the top end of the placing plate 1304 is movably connected to a vibration frequency tester 1305, and the vibration frequency tester 1305 is movably connected to the bottom end of the loading plate 1201, the vibration frequency tester 1305 is an electronic device, and the frequency measurement range is 0.1 to 2000Hz (± 10%).

The placing plate 1304 is in a lifting structure formed between the second threaded rod 1303 and the sleeve 1302, the sleeve 1302 is in a rotating structure formed between the third bearing 1301 and the workbench 1, the sleeve 1302 is rotated, and the second threaded rod 1303 can move up and down to drive the placing plate 1304 and the vibration frequency tester 1305 at the top end to move up and down.

As shown in fig. 6, the inside of the pressure relief mechanism 14 of this embodiment includes a second chute 1401, and the second chute 1401 forms an integrated connection with the inner wall of the supporting rod 6 through a slot, the inside of the second chute 1401 is sleeved and inserted with a second sliding block 1402, and the second sliding block 1402 is fixedly connected with the two ends of the supporting plate 1201 respectively, the bottom end of the supporting plate 1201 is fixedly connected with a cushioning spring 1403, and the cushioning spring 1403 is fixedly connected with the top end of the workbench 1, and the cushioning spring 1403 relieves the vibration force applied to the supporting plate 1201.

The bearing plate 1201 forms a sliding structure through the second sliding block 1402 and the second sliding chute 1401, the bearing plate 1201 and the workbench 1 are parallel, and the bearing plate 1201 can slide up and down through the second sliding block 1402 and the second sliding chute 1401 at a certain distance.

For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.

The working principle of the invention is as follows: when the device is used, firstly, the vibration frequency tester 1305 is placed on the surface of the placing plate 1304, then the sleeve 1302 is manually and sequentially rotated, the sleeve 1302 rotates through the third bearing 1301, the second threaded rod 1303 inside the sleeve 1302 moves upwards when the sleeve 1302 rotates, the second threaded rod 1303 drives the placing plate 1304 and the vibration frequency tester 1305 at the top end to move upwards, the vibration frequency tester 1305 is attached to the bottom end of the bearing plate 1201, then a workpiece to be detected is placed on the surface of the bearing plate 1201, the bearing plate 1204 is manually pulled, the bearing plate 1204 slides in the first sliding groove 1202 through the first sliding block 1203 to adjust the proper distance of the bearing plate 1204, then the first hand-operated bolt 1205 is manually rotated, the first hand-operated bolt 1205 rotates downwards in the bearing plate 1204 to extrude the first sliding groove 1202 to fix the bearing plate 1204, then the connecting rod 1208 is manually rotated, the connecting rod 1208 rotates through the second bearing 1207 to drive the abutting plates 1210 to be attached to two sides of the workpiece, the second hand-operated bolt 1211 is manually rotated to rotate in the supporting plate 1206 to drive the clamping plate 1212 to extrude the connecting rod 1208 to fix the position of the abutting plate 1210, the pressing plate 15 is driven to move downwards through the vibration applying oil cylinder body 10, the compression springs 1102 in the grooves 1101 on the two sides of the pressing plate 15 extrude the C-shaped plate 1104 to move towards the supporting rod 6, the roller 1106 in the C-shaped plate 1104 is tightly attached to the supporting rod 6, the roller 1106 rotates through the first bearing 1105 to assist the stable lifting movement of the pressing plate 15, and when the bearing plate 1201 and a workpiece to be detected are vibrated, the vibration force applied to the bearing plate 1201 is relieved through the vibration relieving spring 1403, so that the working principle of the invention is completed.

The above embodiments are preferred embodiments of the present invention, and those skilled in the art can make variations and modifications to the above embodiments, therefore, the present invention is not limited to the above embodiments, and any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. The utility model provides a hydraulic pressure dynamic test platform is with applying vibrations hydro-cylinder vibrations power frequency monitoring facilities, including workstation (1), its characterized in that: the bottom periphery of the workbench (1) is respectively welded with support columns (2), the inner threads of the lower ends of the support columns (2) are connected with first threaded rods (3), the bottom ends of the first threaded rods (3) are welded with backing plates (4), a display (5) is placed on one side of the top end of the workbench (1), a support rod (6) is fixedly connected to the other side of the top end of the workbench (1), an electric sliding rail (7) is connected in an embedded mode inside the workbench (1), an electric sliding block (8) is inserted in the electric sliding rail (7) in a sleeved mode, a mounting plate (9) is welded and connected with the electric sliding block (8), a shock applying oil cylinder body (10) is fixedly connected to the bottom end of the mounting plate (9), a pressing plate (15) is fixedly connected to the bottom end of the shock applying oil cylinder body (10), and a stabilizing mechanism (11) is installed between the pressing plate (, and the inside of stabilizing mean (11) is including recess (1101), recess (1101) constitutes the integration with the both sides of clamp plate (15) through the fluting respectively and is connected, and inner wall one side fixedly connected with compression spring (1102) of recess (1101), pole (1103) in the other end fixedly connected with of compression spring (1102) is flexible, and the other end fixedly connected with C template (1104) of pole (1103) in the extension, the first bearing (1105) of the inner wall both sides fixedly connected with of C template (1104), and first bearing (1105) rotate and are connected with running roller (1106), feed mechanism (12) are installed to the inside lower extreme of bracing piece (6), and the bottom of feed mechanism (12) installs monitoring mechanism (13), slow compression mechanism (14) are installed to feed mechanism (12) both sides.

2. The device for monitoring the vibration force frequency of the vibrating cylinder for the hydraulic dynamic test bed according to claim 1, wherein: the roller (1106) is movably connected with the surface of the supporting rod (6), and the roller (1106) forms a rotating structure with the C-shaped plate (1104) through the first bearing (1105).

3. The device for monitoring the vibration force frequency of the vibrating cylinder for the hydraulic dynamic test bed according to claim 1, wherein: c template (1104) and bracing piece (6) surface swing joint, for the activity cup joints between flexible interior pole (1103) and recess (1101) inside, and C template (1104) constitutes elastic telescopic structure through between flexible interior pole (1103), compression spring (1102) and recess (1101).

4. The device for monitoring the vibration force frequency of the vibrating cylinder for the hydraulic dynamic test bed according to claim 1, wherein: the feeding mechanism (12) comprises a bearing plate (1201) inside, the bearing plate (1201) is movably connected with the inner wall of a supporting rod (6), a first sliding groove (1202) is formed in the top end of the bearing plate (1201), a first sliding block (1203) is sleeved and inserted in the first sliding groove (1202), a supporting plate (1204) is fixedly connected to the top end of the first sliding block (1203), a first hand-screwed bolt (1205) is connected to the inner thread of the supporting plate (1204), the first hand-screwed bolt (1205) is movably connected with the inner portion of the first sliding groove (1202), supporting plates (1206) are fixedly connected to two sides of the top end of the supporting plate (1204), a second bearing (1207) is fixedly connected to the inner wall of the supporting plate (1206), a connecting rod (1208) is rotatably connected to the second bearing (1207), and a movable shaft (1209) is rotatably connected to the other end of the connecting rod (1208), and the other end of the movable shaft (1209) is fixedly connected with a resisting plate (1210), the internal thread of the supporting plate (1206) is connected with a second hand-screwed bolt (1211), and the other end of the second hand-screwed bolt (1211) is fixedly connected with a clamping plate (1212).

5. The device for monitoring the vibration force frequency of the vibrating cylinder for the hydraulic dynamic test bed as claimed in claim 4, wherein: the movable connection between splint (1212) and connecting rod (1208) one side, and splint (1212) constitute extending structure through between the second hand-operated bolt (1211) and backup pad (1206), connecting rod (1208) constitute revolution mechanic through between second bearing (1207) and backup pad (1206), bearing board (1201) constitute sliding construction through between first sliding block (1203) and first spout (1202), and bearing board (1201) constitute fixable structure through between first hand-operated bolt (1205) and first spout (1202).

6. The device for monitoring the vibration force frequency of the vibrating cylinder for the hydraulic dynamic test bed according to claim 1, wherein: the inside of monitoring mechanism (13) is including four third bearings (1301), and is fixed connection between the top of third bearing (1301) and workstation (1), the top of third bearing (1301) is rotated and is connected with sleeve (1302), and the internal thread of sleeve (1302) is connected with second threaded rod (1303), board (1304) are placed to the top fixedly connected with of second threaded rod (1303), and the top swing joint who places board (1304) has vibration frequency tester (1305), and this vibration frequency tester (1305) and loading board (1201) bottom swing joint.

7. The device for monitoring the vibration force frequency of the vibrating cylinder for the hydraulic dynamic test bed as claimed in claim 6, wherein: the placing plate (1304) forms a lifting structure through the second threaded rod (1303) and the sleeve (1302), and the sleeve (1302) forms a rotating structure through the third bearing (1301) and the workbench (1).

8. The device for monitoring the vibration force frequency of the vibrating cylinder for the hydraulic dynamic test bed according to claim 1, wherein: the inside of pressure relief mechanism (14) is including second spout (1401), and second spout (1401) constitute the integration through the fluting between respectively and bracing piece (6) inner wall and be connected, the inside cup joint of second spout (1401) is inserted and is equipped with second sliding block (1402), and second sliding block (1402) respectively with be fixed connection between loading board (1201) both ends, the bottom fixedly connected with bradyseism spring (1403) of loading board (1201), and be fixed connection between the top of bradyseism spring (1403) and workstation (1).

9. The device for monitoring the vibration force frequency of the vibrating cylinder for the hydraulic dynamic test bed according to claim 8, wherein: the bearing plate (1201) and the second sliding groove (1401) form a sliding structure through the second sliding block (1402), and the bearing plate (1201) and the workbench (1) are parallel.