CN116447200A - Inclined oil cylinder pressure test device and pressure test method applied to forklift - Google Patents

Abstract

The invention relates to the technical field of hydraulic part detection equipment, in particular to a pressure testing device of an inclined oil cylinder applied to a forklift, and also relates to a use method of the pressure testing device of the inclined oil cylinder applied to the forklift; the hydraulic station is used for detecting the oil cylinder to be detected, and the detection result is read through the hydraulic station.

Description

A pressure test device and method for a tilting cylinder applied to a forklift

technical field

The invention relates to the technical field of hydraulic component testing equipment, in particular to a tilting cylinder pressure test device applied to forklifts, and also relates to a method of using the tilting cylinder pressure test device applied to forklifts.

Background technique

Hydraulic cylinder generally refers to a hydraulic cylinder. A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating or swinging motion. It has a simple structure and reliable operation. When it is used to realize reciprocating motion, the deceleration device can be eliminated. , and there is no transmission gap, and the movement is smooth, so it is widely used in various mechanical hydraulic systems.

The hydraulic cylinder is an important part of the forklift, and its quality directly affects the quality of the whole vehicle. The hydraulic cylinder test bench is a necessary means to control the quality of hydraulic cylinders. For the quality of the hydraulic cylinder, the most important thing is the sealing ability of each cavity of the cylinder to the hydraulic oil. Only when the sealing parts inside the hydraulic cylinder fail, will there be a failure.

After the production of the existing hydraulic cylinder is completed, it is necessary to carry out a pressure test on the hydraulic cylinder. During the pressure test, the existing oil cylinder is connected to the oil cylinder through the oil pipe of the hydraulic station, and then the hydraulic oil is injected into the oil cylinder, so that Push the push rod to expand and contract, so as to observe whether there is oil leakage, vibration, etc. in the hydraulic cylinder. However, during the detection process, when the staff connects the oil pipe, they need to use threaded pipes to manually thread the connection. The operation is troublesome and time-consuming. For When testing multiple groups of oil cylinders, the efficiency is low, and the detection accuracy is average by visually observing whether there is oil leakage and vibration. For this reason, need to design new technical scheme to give solution.

Chinese Patent No. CN115524069A discloses a pressure test detection device for a hydraulic cylinder. The device can drive the splint to clamp and limit the oil inlet pipe on the surface of the hydraulic cylinder through the third electric push rod on the side wall of the limit frame, so that the oil inlet pipe of the hydraulic cylinder It can be vertically upward, so as to ensure the alignment progress of the oil inlet of the hydraulic cylinder and the threaded pipe, thereby ensuring the accuracy of the connection between the threaded pipe and the oil inlet, and avoiding misalignment and thread damage.

However, in actual operation, the lowering of the hollow plate and the driving force of the electric push rod on the top of the hollow plate make the hydraulic cylinder easily misaligned due to the downward force when the hollow plate touches the top of the hydraulic cylinder to be processed. The bottom is equipped with an electric push rod to drive the splint to clamp the bottom of the hydraulic cylinder, which cannot ensure that the hydraulic cylinder to be tested will be displaced during the test, which will lead to uncertainty in the connection between the threaded rod and the oil inlet, which is prone to misalignment and threading Damaged conditions will affect the accuracy of detection, thus causing inconvenience in use.

Contents of the invention

Aiming at the problems existing in the existing technology, a tilting cylinder pressure test device applied to forklifts is provided. The bottom of the cylinder can be clamped by the first clamping device, and the sleeve of the cylinder can be clamped by the second clamping device. Clamping, the third clamping device can realize clamping the output end of the oil cylinder, at this time, the first lifting mechanism and the second lifting mechanism can realize lifting the bottom of the oil cylinder, and the second hydraulic cylinder drives the bearing plate Move toward the output end of the oil cylinder until the pipeline connection device abuts against the output end of the oil cylinder to be tested. At this time, the pipeline connection device is connected to the output end of the oil cylinder, and the hydraulic station supplies the hydraulic oil to the bearing plate through the oil inlet pipe. Oil, multiple pressure gauges and LCD screens are set on the hydraulic station. Through the display functions of the LCD screen and the hydraulic gauge on the hydraulic station, the pressure test of the oil cylinder can be realized. By setting the clamping module and the lifting device , It can realize the complete fixation of different sizes of oil cylinders, so that the pipeline connection device can realize accurate docking when pressurizing the oil cylinders, and prevent the oil cylinders from shifting due to excessive pressure caused by pressurization.

In order to solve the problems of the prior art, the technical solution adopted in the present invention is:

A pressure test device for an inclined oil cylinder applied to a forklift, comprising a load-bearing frame, a hydraulic station is arranged on the right side of the load-bearing frame, a load-bearing plate is arranged inside the load-bearing frame, the hydraulic station and the load-bearing frame are connected through an oil inlet pipe, and a hydraulic station is arranged inside the load-bearing frame There is a clamping module, the clamping module includes a first clamping device, a second clamping device and a third clamping device, the first clamping device is fixed on the left side inside the bearing frame, and the second clamping device is fixed on the left On the inner top of the bearing frame, the third clamping device is slidably arranged on the inner top of the bearing frame and on the right side of the second clamping device, and the inner bottom of the bearing frame is also provided with a lifting device, which includes a first supporting device The lifting mechanism and the second lifting mechanism, the first lifting mechanism and the second lifting mechanism array are slidably arranged on the inner bottom of the bearing frame, and a pushing device is arranged on the inner right side of the bearing frame, and the output end of the pushing device is connected to the The bearing plate is fixedly connected, and the side of the bearing frame away from the pushing device is provided with a pipeline connection device.

Preferably, the first clamping device includes a first base, a first clamping mechanism, a second clamping mechanism, a third clamping mechanism and a fourth clamping mechanism, the base is fixedly arranged on the left side of the bearing frame, and the first clamping mechanism The annular array of the clamping mechanism, the second clamping mechanism, the third clamping mechanism and the fourth clamping mechanism is fixedly arranged on the periphery of the first base.

Preferably, the first clamping mechanism, the second clamping mechanism, the third clamping mechanism have the same structure as the fourth clamping mechanism, the first clamping mechanism also includes a first hydraulic cylinder and a second push plate, and the first hydraulic cylinder It is fixedly arranged on the first base, and the second push plate is fixedly arranged at the output end of the first hydraulic cylinder.

Preferably, the second clamping device includes a second base, a first ring bracket, a first adjustable clamping unit, a second adjustable clamping unit and a third adjustable clamping unit, and the second base is fixedly arranged on the bearing frame The inner top of the inner top, the first ring bracket is fixed on the side of the second base away from the top of the bearing frame, the first adjustable clamping unit, the second adjustable clamping unit and the third adjustable clamping unit are all fixed in a ring array Inside the first ring bracket.

Preferably, the first adjustable clamping unit, the second adjustable clamping unit and the third adjustable clamping unit have the same structure, and the first adjustable clamping unit includes a first bracket, a first threaded rod, a sliding block, The third push plate and the driving unit, the first bracket is fixedly arranged inside the first annular bracket, the first threaded rod is rotatably arranged on the first bracket, the driving unit is fixedly arranged on the top of the first bracket, and the sliding block is slidably arranged on the second On a threaded rod, the third push plate is fixedly arranged on the top of the sliding block.

Preferably, the third clamping device includes a third base, a second annular bracket, a first retractable push plate mechanism, a second retractable push plate mechanism and a third retractable push plate mechanism, and the third base is slidably arranged on the inner top of the bearing frame , the second annular bracket is fixedly arranged on the side of the third base away from the top of the bearing frame, and the annular array of the first shrinkable push pedal mechanism, the second shrinkable push pedal mechanism and the third shrinkable push pedal mechanism are fixedly arranged on the second annular support internal.

Preferably, the first retractable push pedal mechanism, the second retractable push pedal mechanism and the third retractable push pedal mechanism have the same structure, and the first retractable push pedal mechanism also includes a second bracket, a polished rod, a spring and a fourth push pedal, and the second bracket It is fixedly arranged on the second annular bracket, the polished rod is slidably arranged on the second bracket, the fourth push plate is fixedly arranged on one end of the polished rod, one end of the spring is fixedly arranged on the top of the second bracket, and the other end of the spring abuts against the fourth The push plate is close to one side of the second bracket.

Preferably, the first lifting mechanism has the same structure as the second lifting mechanism, and the first lifting mechanism includes a V-shaped sliding frame, a first pushing mechanism and a second pushing mechanism, and the V-shaped sliding frame is slidably arranged on the bearing frame. In the inner bottom, the first pushing mechanism has the same structure as the second pushing mechanism. The first pushing mechanism and the second pushing mechanism are mirrored on the left and right sides of the top of the V-shaped sliding frame. The first pushing mechanism also includes a first Push plate, rotating block, sliding groove, ejector rod, two-way screw rod, first slider and second sliding block, the sliding groove is fixedly arranged on the top of the V-shaped sliding frame, the rotation of the two-way screw rod is arranged in the sliding groove, and the rotating block It is fixed on one side of the two-way screw, the first slider and the second slider are slidingly set on the two-way screw, the rotating block is installed between the first slider and the second slider, and the ejector rod is fixed on the rotating On the rod, the first push plate is fixedly arranged on the top plate.

Preferably, the pipeline connection device includes a second drive unit, a threaded pipe, a first gear, a second gear and a rotary joint, the second drive unit is fixedly arranged on the side of the carrier plate close to the clamping module, and the threaded pipe is rotatably arranged on The bearing plate is close to the side of the clamping module, the rotary joint is fixed on the periphery of the threaded pipe, the first gear is fixed on the rotary joint, and the second gear is fixed on the output end of the second drive unit.

Preferably, the following steps are included;

S1. When it is necessary to test the pressure of the oil cylinder, by placing the oil cylinder on the clamping module, the bottom of the oil cylinder can be clamped by the first clamping device, and the second clamping device can clamp the sleeve of the oil cylinder The third clamping device can clamp the output end of the oil cylinder. At this time, the first lifting mechanism and the second lifting mechanism can lift the bottom of the oil cylinder;

S2. The lifting device can be adjusted according to the length and size of the oil cylinder until the output end of the lifting device touches the outer wall of the oil cylinder, thereby realizing lifting;

S3. After the oil cylinder is fixed, the second hydraulic cylinder drives the bearing plate to move toward the output end of the oil cylinder until the pipeline connection device abuts against the output end of the oil cylinder to be tested;

S4. The hydraulic station supplies hydraulic oil to the bearing plate through the oil inlet pipe. There are multiple pressure gauges and liquid crystal displays on the hydraulic station. Through the display functions of the liquid crystal display and the hydraulic meter on the hydraulic station, the oil cylinder can be realized. stress test.

The beneficial effects of the present application compared with the prior art are:

1. Through the setting of the clamping module and the lifting device in this application, the complete positioning of the hydraulic cylinder to be detected can be realized, and the displacement of the hydraulic cylinder due to the force during the detection process can be prevented, which makes it difficult to detect.

2. This application can accurately test the pressure of the oil cylinder through the multiple sets of pressure gauges set on the hydraulic station.

Description of drawings

Fig. 1 is a front view of a tilting cylinder pressure test device applied to a forklift;

Fig. 2 is a schematic diagram of a three-dimensional structure of a tilting cylinder pressure test device applied to a forklift;

Fig. 3 is an enlarged view of A in Fig. 2 that provides a tilting cylinder pressure test device applied to a forklift;

Fig. 4 is a top view of a tilting cylinder pressure test device applied to a forklift;

Fig. 5 is a schematic diagram of a partial three-dimensional structure of a tilting cylinder pressure test device applied to a forklift;

Fig. 6 is a schematic diagram of a partial three-dimensional structure of a tilting cylinder pressure test device applied to a forklift;

Fig. 7 is a schematic diagram of a partial three-dimensional structure of a tilting cylinder pressure test device applied to a forklift;

Fig. 8 is a schematic diagram 4 of a partial three-dimensional structure of a tilting cylinder pressure test device applied to a forklift;

Fig. 9 is a sectional view along B-B in Fig. 4 that provides a tilting cylinder pressure test device applied to a forklift;

Fig. 10 is an enlarged view of C in Fig. 8 providing a tilting cylinder pressure test device applied to a forklift;

Fig. 11 is an enlarged view at D in Fig. 9 that provides a tilting cylinder pressure test device applied to a forklift;

Fig. 12 is an enlarged view of E in Fig. 9, which provides a tilt cylinder pressure test device applied to a forklift.

The labels in the figure are:

1-hydraulic station;

11 - pressure gauge;

12 - oil inlet pipe;

2- clamping module;

21 - the first clamping device;

211 - the first base;

212-the first clamping mechanism; 2121-the first hydraulic cylinder; 2122-the second push plate;

213 - the second clamping mechanism;

214-the third clamping mechanism;

215-the fourth clamping mechanism;

22 - the second clamping device;

221 - the second base;

222 - the first ring bracket;

223-the first adjustable clamping unit; 2231-the first bracket; 2232-the first threaded rod; 2233-sliding block; 2234-the third push plate; 2235-driving unit;

224 - the second adjustable clamping unit;

225-the third adjustable clamping unit;

23 - the third clamping device;

231 - the third base;

232-the first retraction push plate mechanism; 2321-the second bracket; 2322-polished rod; 2323-spring; 2324-the fourth push plate;

233-the second retraction push plate mechanism;

234-the third retraction push plate mechanism;

235 - the second ring bracket;

3- Lifting device;

31 - the first lifting body;

311-shaped sliding frame;

312-the first push mechanism; 3121-the first push plate; 3122-rotating block; 3123-sliding groove; 3124-ejector; 3125-two-way screw;

313-the second pushing mechanism;

32-Second lifting body;

4-Pipeline connection device;

41 - the second drive unit;

42 - threaded pipe;

43 - the first gear;

44 - second gear;

45 - rotary joint;

5-Jumping device;

6-carrying frame;

7 - Carrier board.

Detailed ways

In order to further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Figures 1 to 12, a tilting cylinder pressure test device applied to a forklift includes a bearing frame 6, a hydraulic station 1 is arranged on the right side of the bearing frame 6, and a bearing plate 7 is arranged inside the bearing frame 6, The hydraulic station 1 communicates with the bearing frame 6 through the oil inlet pipe 12, and the clamping module 2 is arranged in the bearing frame 6, and the clamping module 2 includes a first clamping device 21, a second clamping device 22 and a third clamping device 23. The first clamping device 21 is fixedly arranged on the left side inside the bearing frame 6, the second clamping device 22 is fixedly arranged on the inner top of the bearing frame 6, and the third clamping device 23 is slidably arranged on the inner top of the bearing frame 6 and Located on the right side of the second clamping device 22, the inner bottom of the bearing frame 6 is also provided with a lifting device 3. The lifting device 3 includes a first lifting mechanism 31 and a second lifting mechanism 32. The first lifting mechanism 31 Slidingly arranged in an array with the second lifting mechanism 32 on the inner bottom of the bearing frame 6, the inner right side of the bearing frame 6 is provided with a pushing device 5, the output end of the pushing device 5 is fixedly connected with the bearing plate 7, and the bearing frame 6 The side away from the pushing device 5 is provided with a pipeline connection device 4 .

When it is necessary to test the pressure of the oil cylinder, by placing the oil cylinder on the clamping module 2, the bottom of the oil cylinder can be clamped by the first clamping device 21, and the second clamping device 22 can realize the sleeve cylinder of the oil cylinder. Clamping, the third clamping device 23 can realize clamping the output end of the oil cylinder. At this time, the first lifting mechanism 31 and the second lifting mechanism 32 can realize lifting the bottom of the oil cylinder, and the pushing device 5 Including the second hydraulic cylinder and the extension frame, the number of the second hydraulic cylinder is two, the second hydraulic cylinder is fixedly arranged on the extension frame, the output end of the second hydraulic cylinder is fixedly connected with the bearing plate 7, the number of the extension frame is the same as that of the first The number of the two hydraulic cylinders is the same, the extension frame is fixedly arranged on the right side inside the bearing frame 6, and the output end of the pipeline connection device 4 is coaxial with the clamped oil cylinder. After the oil cylinder is fixed, it is driven by the second hydraulic cylinder. The bearing plate 7 moves toward the output end of the oil cylinder until the pipeline connection device 4 abuts against the output end of the oil cylinder to be tested. At this time, the pipeline connection device 4 is connected to the output end of the oil cylinder, and the hydraulic station 1 passes the hydraulic oil through The oil inlet pipe 12 supplies oil to the bearing plate 7, and the hydraulic station 1 is equipped with multiple pressure gauges 11 and LCD screens. Through the display functions of the LCD screens and hydraulic gauges installed on the hydraulic station 1, the pressure test for the oil cylinder can be realized , by setting the clamping module 2 and the lifting device 3, the complete fixation of cylinders of different sizes can be realized, so that the pipeline connection device 4 can realize precise docking when pressurizing the cylinders, and prevent the cylinders from being over-pressurized due to pressurization. A large displacement will cause the oil cylinder to shift, which will affect the test, resulting in inaccurate test data.

5 and 6, the first clamping device 21 includes a first base 211, a first clamping mechanism 212, a second clamping mechanism 213, a third clamping mechanism 214 and a fourth clamping mechanism 215, the base Fixedly arranged on the left side of the bearing frame 6 , the first clamping mechanism 212 , the second clamping mechanism 213 , the third clamping mechanism 214 and the fourth clamping mechanism 215 are fixedly arranged on the periphery of the first base 211 in an annular array.

When it is necessary to fix the bottom of the oil cylinder, the first clamping mechanism 212, the second clamping mechanism 213, the third clamping mechanism 214 and the fourth clamping mechanism 215 are synchronously clamped, so that the bottom of the oil cylinder is firmly fixed To prevent the inaccuracy of the test results caused by the misalignment of the oil cylinder.

5 and 6, the first clamping mechanism 212, the second clamping mechanism 213, the third clamping mechanism 214 have the same structure as the fourth clamping mechanism 215, and the first clamping mechanism 212 also includes a first hydraulic pressure The cylinder 2121 and the second push plate 2122 , the first hydraulic cylinder 2121 is fixed on the first base 211 , and the second push plate 2122 is fixed on the output end of the first hydraulic cylinder 2121 .

When the bottom of the oil cylinder needs to be clamped, the first hydraulic cylinder 2121 drives the second push plate 2122 to move towards the direction of the oil cylinder until the side of the second push plate 2122 close to the oil cylinder abuts against the outer wall of the oil cylinder. At this time, the second clamping The mechanism 213, the third clamping mechanism 214 and the fourth clamping mechanism 215 move synchronously, thereby realizing the complete fixation of the bottom of the oil cylinder, effectively preventing the oil cylinder from misalignment during pressure measurement.

Referring to Fig. 5 and Fig. 7, 4. A tilting cylinder pressure test device applied to a forklift according to claim 1, characterized in that, the second clamping device 22 includes a second base 221, a first annular The bracket 222, the first adjustable clamping unit 223, the second adjustable clamping unit 224 and the third adjustable clamping unit 225, the second base 221 is fixedly arranged on the inner top of the bearing frame 6, and the first annular bracket 222 is fixed Set on the side of the second base 221 away from the top of the bearing frame 6, the first adjustable clamping unit 223, the second adjustable clamping unit 224 and the third adjustable clamping unit 225 are fixed in a ring array and arranged on the first ring The inside of bracket 222 .

When the middle part of the hydraulic cylinder needs to be clamped, the hydraulic cylinder passes through the first annular bracket 222, and is clamped by the synchronous cooperation of the first adjustable clamping unit 223, the second adjustable clamping unit 224 and the third adjustable clamping unit 225. Clamping can realize the clamping of oil cylinders of different sizes, which can further increase the stability of the clamping and increase the practicability of the equipment.

11, 5. A tilting cylinder pressure test device applied to a forklift according to claim 4, characterized in that the first adjustable clamping unit 223, the second adjustable clamping unit 224 and The structure of the third adjustable clamping unit 225 is the same, and the first adjustable clamping unit 223 includes a first bracket 2231, a first threaded rod 2232, a sliding block 2233, a third push plate 2234 and a driving unit 2235, and the first bracket 2231 Fixedly arranged inside the first ring bracket 222, the first threaded rod 2232 is rotatably arranged on the first bracket 2231, the driving unit 2235 is fixedly arranged on the top of the first bracket 2231, and the sliding block 2233 is slidably arranged on the first threaded rod 2232 , the third push plate 2234 is fixedly arranged on the top of the sliding block 2233 .

The sliding block 2233 is provided with a perforation for the first threaded rod 2232 to pass through, and the inside of the perforation is provided with a thread that engages with the first threaded rod 2232. When it is necessary to clamp oil cylinders of different sizes, the first threaded rod 2232 is driven by the driving unit 2235 Rotate, the first threaded rod 2232 drives the sliding block 2233 to move up and down along the direction of the threaded rod while rotating, and then realizes that the sliding block 2233 drives the third push plate 2234 to move up and down until the third push plate 2234 touches the outer wall of the oil cylinder , at this time, the second adjustable clamping unit 224 and the third adjustable clamping unit 225 clamp synchronously, and then realize the clamping of the second clamping device 22 according to oil cylinders of different sizes, further increasing the stability of the cylinder clamping sex.

9 and 12, the third clamping device 23 includes a third base 231, a second annular bracket 235, a first retractable push pedal mechanism 232, a second retractable push pedal mechanism 233 and a third retractable push pedal mechanism 234 , the third base 231 is slidably arranged on the inner top of the bearing frame 6, the second annular bracket 235 is fixedly arranged on the side of the third base 231 away from the inner top of the bearing frame 6, the first shrinking push plate mechanism 232, the second shrinking push plate The ring array of the mechanism 233 and the third retractable push plate mechanism 234 is fixed inside the second ring bracket 235 .

When it is necessary to clamp the output end of the oil cylinder, the oil cylinder runs through the second annular support 235, and the synchronous clamping of the first shrinkage push plate mechanism 232, the second shrinkage push plate mechanism 233 and the third shrinkage push plate mechanism 234 can be realized. The oil cylinders of different sizes are clamped, and then the output end of the oil cylinder can be firmly clamped to increase the stability of the oil cylinder, so that the oil cylinder can be prevented from shifting during detection, which will cause errors in the detection results and even make it difficult to detect.

Referring to Fig. 12, the first shrinkage pusher mechanism 232, the second shrinkage pusher mechanism 233 and the third shrinkage pusher mechanism 234 have the same structure, and the first shrinkage pusher mechanism 232 also includes a second bracket 2321, a polished rod 2322, a spring 2323 and the fourth push plate 2324, the second bracket 2321 is fixedly arranged on the second annular bracket 235, the polished rod 2322 is slidably arranged on the second bracket 2321, the fourth push plate 2324 is fixedly arranged on one end of the polished rod 2322, and one end of the spring 2323 The other end of the spring 2323 abuts against the side of the fourth push plate 2324 close to the second bracket 2321 .

When it is necessary to clamp the output end of the oil cylinder, by pressing the fourth push plate 2324, the fourth push plate 2324 moves toward the side of the second bracket 2321, and the spring 2323 is in a compressed state at this time, and the output of the oil cylinder end through the second bracket 2321, at this time, the fourth push plate 2324 is released, and the reaction force of the spring 2323 makes the fourth push plate 2324 move toward the side of the oil cylinder until the fourth push plate 2324 is close to the side of the oil cylinder. Connected to the outer wall of the oil cylinder, at this time, the second shrinkage push plate mechanism 233 and the third shrinkage push plate mechanism 234 are clamped synchronously, thereby realizing the clamping function for oil cylinders of different sizes.

Referring to Figures 8 and 10, the first lifting mechanism 31 has the same structure as the second lifting mechanism 32, and the first lifting mechanism 31 includes a V-shaped sliding frame 311, a first pushing mechanism 312 and a second pushing mechanism 313, the V-shaped sliding frame 311 is slidably arranged on the inner bottom of the bearing frame 6, the first pushing mechanism 312 has the same structure as the second pushing mechanism 313, and the first pushing mechanism 312 and the second pushing mechanism 313 are mirrored on the V On the left and right sides of the top of the sliding frame 311, the first pushing mechanism 312 also includes a first push plate 3121, a rotating block 3122, a slide groove 3123, a push rod 3124, a two-way screw rod 3125, a first slide block 3126 and a second slide Block 3127, sliding groove 3123 is fixedly arranged on the top of V-shaped sliding frame 311, two-way screw mandrel 3125 is rotatably arranged in sliding groove 3123, and rotating block 3122 is fixedly arranged on one side of two-way screw mandrel 3125, and the first slide block 3126 and the second The second slider 3127 is slidably arranged on the two-way screw rod 3125, the rotating block 3122 is rotatably arranged between the first slider 3126 and the second slider 3127, the ejector rod 3124 is fixedly arranged on the rotating rod, and the first push plate 3121 is fixedly arranged on the top plate.

When the bottom of the oil cylinder needs to be lifted, by rotating the rotating block 3122, the rotating block 3122 drives the two-way screw mandrel 3125 to rotate when rotating. The direction is moved towards or reversed until the length of the rotating block 3122 is suitable. At this time, the rotating block 3122 is inserted between the first sliding block 3126 and the second sliding block 3127. The two ends of the rotating block 3122 are provided with threads. The push rod 3124 can be a telescopic rod. When the push rod 3124 and the first push plate 3121 are adjusted to a suitable angle and the side of the first push plate 3121 close to the oil cylinder abuts the oil cylinder, the nut is tightly engaged with the rotating block 3122 so that The rotation rod forms a fixed angle with the top of the V-shaped sliding frame 311 , thereby realizing the function of the first push plate 3121 and the push rod 3124 to lift the oil cylinder.

Referring to Fig. 3, the pipeline connection device 4 includes a second drive unit 412235, a threaded pipe 42, a first gear 43, a second gear 44 and a rotary joint 45, and the second drive unit 41 is fixedly arranged on the carrier plate 7 close to the clamping On one side of the module 2, the threaded tube 42 is rotatably arranged on the side of the carrier plate 7 close to the clamping module 2, the rotary joint 45 is fixed on the periphery of the threaded tube 42, and the first gear 43 is fixed on the rotary joint 45. The second gear 44 is fixedly arranged at the output end of the second driving unit 41 .

When the pushing device 5 drives the bearing plate 7 and the threaded pipe 42 to move against the output end of the oil cylinder, the second drive unit 41 drives the second gear 44 to rotate, and the second gear 44 meshes with the outside of the second gear 44. When the gear 44 rotates, it drives the first gear 43 to rotate simultaneously, and then realizes that the first gear 43 drives the rotary joint 45 and the threaded pipe 42 to rotate. 42, so through the rotation of the threaded pipe 42, the butt connection between the threaded pipe 42 and the oil cylinder can be realized, and then the communication between the hydraulic station 1 and the oil cylinder can be realized, thereby realizing the detection of the oil cylinder by the hydraulic station 1.

Referring to Figures 1 to 12, a method for using a tilting cylinder pressure test device applied to a forklift includes the following steps;

S1. When it is necessary to test the pressure of the oil cylinder, by placing the oil cylinder on the clamping module 2, the bottom of the oil cylinder can be clamped by the first clamping device 21, and the second clamping device 22 can realize the sleeve of the oil cylinder The cylinder is clamped, and the third clamping device 23 can realize clamping the output end of the oil cylinder. At this time, the first lifting mechanism 31 and the second lifting mechanism 32 can realize lifting the bottom of the oil cylinder;

S2. The lifting device 3 can be adjusted according to the length and size of the oil cylinder until the output end of the lifting device 3 touches the outer wall of the oil cylinder, thereby realizing lifting;

S3. After the oil cylinder is fixed, the second hydraulic cylinder drives the bearing plate 7 to move toward the output end of the oil cylinder until the pipeline connection device 4 abuts against the output end of the oil cylinder to be tested;

S4. The hydraulic station 1 supplies the hydraulic oil to the bearing plate 7 through the oil inlet pipe 12. The hydraulic station 1 is equipped with a plurality of pressure gauges 11 and LCD screens, and the liquid crystal display screens and hydraulic gauges set on the hydraulic station 1 are displayed. The function can realize the pressure test for the oil cylinder.

The above examples only represent one or several implementations of the present invention, and the descriptions thereof are more specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. The utility model provides a be applied to tilting cylinder pressure testing device on fork truck, a serial communication port, including carrying frame (6), the right side of carrying frame (6) is provided with hydraulic pressure station (1), the inside of carrying frame (6) is provided with loading board (7), hydraulic pressure station (1) and carrying frame (6) are through advance oil pipe (12) intercommunication, be provided with centre gripping module (2) in carrying frame (6), centre gripping module (2) include first clamping device (21), second clamping device (22) and third clamping device (23), first clamping device (21) fixed arrangement is in the inside left side of carrying frame (6), second clamping device (22) fixed arrangement is at the interior top of carrying frame (6), third clamping device (23) slide and are provided with in the interior top of carrying frame (6) and are located the right side of second clamping device (22), the interior bottom of carrying frame (6) still is provided with lifting device (3), lifting device (3) include first lifting mechanism (31) and second lifting mechanism (32), first lifting mechanism (31) and second lifting mechanism (32) are provided with the pushing device (5) and are connected in the inside of carrying frame (6) slide and are provided with the inside of the top of carrying frame (5) and are held in the fixed position of the bottom (5), one side of the bearing frame (6) far away from the pushing device (5) is provided with a pipeline connecting device (4).

2. The tilting cylinder pressure test device applied to a forklift according to claim 1, wherein the first clamping device (21) comprises a first base (211), a first clamping mechanism (212), a second clamping mechanism (213), a third clamping mechanism (214) and a fourth clamping mechanism (215), the base is fixedly arranged on the left side of the bearing frame (6), and the first clamping mechanism (212), the second clamping mechanism (213), the third clamping mechanism (214) and the fourth clamping mechanism (215) are fixedly arranged on the periphery of the first base (211) in an annular array.

3. The tilting cylinder pressure testing device applied to a forklift according to claim 2, wherein the first clamping mechanism (212), the second clamping mechanism (213), the third clamping mechanism (214) and the fourth clamping mechanism (215) have the same structure, the first clamping mechanism (212) further comprises a first hydraulic cylinder (2121) and a second push plate (2122), the first hydraulic cylinder (2121) is fixedly arranged on the first base (211), and the second push plate (2122) is fixedly arranged at an output end of the first hydraulic cylinder (2121).

4. The tilting cylinder pressure test device applied to a forklift according to claim 1, wherein the second clamping device (22) comprises a second base (221), a first annular bracket (222), a first adjustable clamping unit (223), a second adjustable clamping unit (224) and a third adjustable clamping unit (225), the second base (221) is fixedly arranged at the inner top of the bearing frame (6), the first annular bracket (222) is fixedly arranged at one side, far away from the top of the bearing frame (6), of the second base (221), and the first adjustable clamping unit (223), the second adjustable clamping unit (224) and the third adjustable clamping unit (225) are fixedly arranged in an annular array in the first annular bracket (222).

5. The tilting cylinder pressure testing device applied to a forklift according to claim 4, wherein the first adjustable clamping unit (223), the second adjustable clamping unit (224) and the third adjustable clamping unit (225) have the same structure, the first adjustable clamping unit (223) comprises a first bracket (2231), a first threaded rod (2232), a sliding block (2233), a third push plate (2234) and a driving unit (2235), the first bracket (2231) is fixedly arranged in the first annular bracket (222), the first threaded rod (2232) is rotatably arranged on the first bracket (2231), the driving unit (2235) is fixedly arranged at the top of the first bracket (2231), the sliding block (2233) is slidably arranged on the first threaded rod (2232), and the third push plate (2234) is fixedly arranged at the top of the sliding block (2233).

6. The tilting cylinder pressure testing device applied to a forklift truck according to claim 1, wherein the third clamping device (23) comprises a third base (231), a second annular support (235), a first shrinkage push plate mechanism (232), a second shrinkage push plate mechanism (233) and a third shrinkage push plate mechanism (234), the third base (231) is slidably arranged at the inner top of the bearing frame (6), the second annular support (235) is fixedly arranged at one side, far away from the inner top of the bearing frame (6), of the third base (231), and the annular arrays of the first shrinkage push plate mechanism (232), the second shrinkage push plate mechanism (233) and the third shrinkage push plate mechanism (234) are fixedly arranged inside the second annular support (235).

7. The tilting cylinder pressure testing device applied to a forklift according to claim 6, wherein the first contraction push plate mechanism (232), the second contraction push plate mechanism (233) and the third contraction push plate mechanism (234) are identical in structure, the first contraction push plate mechanism (232) further comprises a second support (2321), a polished rod (2322), a spring (2323) and a fourth push plate (2324), the second support (2321) is fixedly arranged on the second annular support (235), the polished rod (2322) is slidably arranged on the second support (2321), the fourth push plate (2324) is fixedly arranged at one end of the polished rod (2322), one end of the spring (2323) is fixedly arranged at the top of the second support (2321), and the other end of the spring (2323) is abutted to one side, close to the second support (2321), of the fourth push plate (2324).

8. The tilt cylinder pressure test device for forklift truck according to claim 1, wherein the first lifting mechanism (31) and the second lifting mechanism (32) have the same structure, the first lifting mechanism (31) comprises a V-shaped sliding frame (311), a first pushing mechanism (312) and a second pushing mechanism (313), the V-shaped sliding frame (311) is slidably arranged at the inner bottom of the bearing frame (6), the first pushing mechanism (312) and the second pushing mechanism (313) have the same structure, the first pushing mechanism (312) and the second pushing mechanism (313) are arranged at the left side and the right side of the top of the V-shaped sliding frame (311) in a mirror image manner, the first pushing mechanism (312) further comprises a first push plate (3121), a rotating block (3122), a sliding groove (3123), a push rod (3124), a bidirectional screw rod (3125), a first sliding block (3126) and a second sliding block (3127), the sliding groove (3123) is fixedly arranged at the top of the V-shaped sliding frame (311), the bidirectional screw rod (3125) is rotatably arranged in the sliding groove (3123), the rotating block (3122) is rotatably arranged at the side of the sliding rod (3125) and the sliding block (3124) is fixedly arranged at the sliding rod (3125) and the sliding rod (3125) on the side (3124), the first push plate (3121) is fixedly disposed on the top plate.

9. The tilting cylinder pressure test device applied to a forklift truck according to claim 1, wherein the pipeline connecting device (4) comprises a second driving unit (41), a threaded pipe (42), a first gear (43), a second gear (44) and a rotary joint (45), the second driving unit (41) is fixedly arranged on one side, close to the clamping module (2), of the bearing plate (7), the threaded pipe (42) is rotatably arranged on one side, close to the clamping module (2), of the bearing plate (7), the rotary joint (45) is fixedly arranged on the periphery of the threaded pipe (42), the first gear (43) is fixedly arranged on the rotary joint (45), and the second gear (44) is fixedly arranged at the output end of the second driving unit (41).

10. The application method of the inclined oil cylinder pressure test device applied to the forklift truck is applied to the inclined oil cylinder pressure test device applied to the forklift truck according to any one of claims 1-9, and is characterized by comprising the following steps of;

s1, when pressure test of an oil cylinder is needed, the bottom of the oil cylinder can be clamped through a first clamping device (21) by placing the oil cylinder on a clamping module (2), a sleeve cylinder of the oil cylinder can be clamped through a second clamping device (22), an output end of the oil cylinder can be clamped through a third clamping device (23), and at the moment, the bottom of the oil cylinder can be lifted through a first lifting mechanism (31) and a second lifting mechanism (32);

s2, the lifting device (3) can be adjusted according to the length and the size of the oil cylinder until the output end of the lifting device (3) abuts against the outer wall of the oil cylinder, so that lifting is realized;

s3, after the oil cylinder is fixed, the bearing plate (7) is driven by the second hydraulic cylinder to move towards the output end of the oil cylinder until the pipeline connecting device (4) is abutted with the output end of the oil cylinder to be tested;

s4, the hydraulic station (1) supplies oil to the bearing plate (7) through the oil inlet pipe (12), a plurality of pressure gauges (11) and a liquid crystal display screen are arranged on the hydraulic station (1), and the pressure test of the oil cylinder can be realized through the display effect of the liquid crystal display screen and the hydraulic gauge arranged on the hydraulic station (1).