A strength testing device and method for hydraulic cylinder manufacturing

Abstract

The present invention belongs to the technical field of hydraulic cylinder production, and specifically discloses a strength detection device and method for hydraulic cylinder production, comprising a detection water tank, a longitudinal movable frame is fixedly installed on the top of one side of the detection water tank, a screw is rotatably installed inside the longitudinal movable frame, the top of the screw is fixedly connected to the output shaft of a motor, the motor is fixedly installed on the top of the longitudinal movable frame, the interior of the detection water tank is filled with water, and a detection transmission component is installed on the other side of the detection water tank; during operation, the present invention, after the output end of the cylinder body is moved outward, pushes the extrusion plate to move downward, on the one hand, the extrusion plate moves downward, so that the quality of the cylinder body can be detected, and on the other hand, the extrusion plate generates pressure on the water, so that the water generates uniform water pressure on the surface of the cylinder body, thereby performing strength detection on the cylinder body.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic cylinder production, and in particular relates to a strength detection device and method for hydraulic cylinder production. Background Art

[0002] According to the patent document with the authorization announcement number of "CN112378767B" and the invention name of "a self-cleaning strength detection device for hydraulic cylinder production", its specification states: when using the self-cleaning strength detection device for hydraulic cylinder production, first, place the hydraulic cylinder to be detected above the movable column, so that the movable column moves downward under the gravity of the hydraulic cylinder. At this time, the movable column will drive the half gear to rotate through the tooth block on its outer side, so that the half gear drives the clamping block to rotate through the connecting rod, so that the clamping block can automatically clamp and fix the hydraulic cylinder to be detected, avoiding the shaking of the hydraulic cylinder during the detection process, and then control the hydraulic rod to push the movable plate to slide along the column. At this time, the movable plate will squeeze the water bag, so that the water bag sprays the cleaning agent inside it on the surface of the base through the nozzle, and continuously move the movable plate downward, so that the pressure sensor can squeeze the hydraulic cylinder to be detected, thereby completing the strength detection of the hydraulic cylinder. However, the following defects still exist:

[0003] When performing strength testing on a hydraulic cylinder, a testing device is used to generate an extrusion force on the hydraulic cylinder to perform strength testing. However, during testing, generally only one or more points of the hydraulic cylinder can be tested, and it is not easy to evenly apply the extrusion force to various positions on the outer surface of the hydraulic cylinder, resulting in poor testing results. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a strength detection device and method for hydraulic cylinder production, which effectively solves the problem that it is difficult to evenly apply the extrusion force to various positions on the outer surface of the hydraulic cylinder when performing strength detection on the hydraulic cylinder.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a strength detection device for hydraulic cylinder production, comprising a detection water tank, a longitudinal moving frame is fixedly installed on the top of one side of the detection water tank, a screw is rotatably installed inside the longitudinal moving frame, the top of the screw is fixedly connected to the output shaft of the motor, the motor is fixedly installed on the top of the longitudinal moving frame, the inside of the detection water tank is filled with water, a detection transmission assembly is installed on the other side of the detection water tank, a strength detection assembly is installed inside the detection water tank, the strength detection assembly is used to install the hydraulic cylinder, an external connection assembly is installed on the front of the detection water tank, the external connection assembly is used to connect with the hydraulic cylinder, the detection transmission assembly is used to drive the hydraulic cylinder and combine with the strength detection assembly to generate pressure on the water, and perform strength detection on the hydraulic cylinder itself through the water pressure;

[0006] The hydraulic cylinder includes a cylinder body, and end pipes are symmetrically installed at both ends of the cylinder body. Pressure valves are installed inside the end pipes. When the hydraulic pressure reaches a certain level, the liquid can enter and exit the cylinder body.

[0007] The external connection component includes an oil tank and an oil pump installed on the front of the detection water tank. One end port of the oil tank is connected to one end port of the oil pump through a connecting hose. The other end port of the oil tank and the other end port of the oil pump are both installed with fixed pipes. The fixed pipes are installed on the front inner wall of the detection water tank. The two fixed pipes correspond to the two end pipes respectively. The detection water tank is made of transparent tempered glass. A top cover is provided on the top of the oil tank. The top cover is connected to the oil tank bolts. After the top cover is opened, hydraulic oil can be filled into the oil tank, and eye-catching color pigments are injected into the hydraulic oil.

[0008] Preferably, the diameter of the fixed tube is the same as the diameter of the end tube, a connecting tube is sleeved on the outer side of the fixed tube, a sealing gasket is installed on the inner wall of the connecting tube, a limit plate is installed on the end of the connecting tube, a fifth spring is installed between the limit plate and the inner wall of the detection water tank, and a fourth wedge block is installed on the side where the two fifth springs are close to each other. After the connecting tube is moved, it is sleeved on the outer side of the end tube.

[0009] Preferably, the detection transmission assembly includes a C-shaped channel fixedly installed on one side of the detection water tank, the top end of the C-shaped channel is connected to the inner cavity of the detection water tank, a second piston block is movably installed in the top inner cavity of the C-shaped channel, a positioning block is symmetrically installed on one end of the second piston block close to the inner cavity of the detection water tank, a sliding groove is provided at the top of the C-shaped channel, a slide plate is installed at the top of the second piston block, a fixing plate is fixedly installed at the top of the C-shaped channel, the fixing plate is located on the side of the slide plate away from the detection water tank, a transverse cylinder is fixedly installed on the side of the fixing plate close to the slide plate, a first internal block is movably installed inside the transverse cylinder, a second connecting rod is installed between the first internal block and the slide plate, and a first spring is installed on the side of the first internal block close to the slide plate.

[0010] Preferably, a first piston block is installed inside the bottom end of the C-shaped channel, hydraulic oil is filled in the C-shaped channel between the first piston block and the second piston block, a push plate is provided inside the detection water tank, and a first connecting rod is installed between the push plate and the first piston block.

[0011] Preferably, the strength detection assembly includes an extrusion plate arranged inside the detection water tank, a hanging plate is provided above the extrusion plate, one end of the hanging plate is slidably connected to the longitudinal movable frame, the hanging plate is threadedly connected to the screw, two middle connecting parts are installed between the extrusion plate and the hanging plate, a bottom mounting part is installed at the bottom end of the hanging plate, a downward pressure detection part is installed on the side of the top of the extrusion plate close to the C-shaped channel, and connection control parts are symmetrically installed on the extrusion plate.

[0012] Preferably, the middle connecting member includes a longitudinal tube symmetrically installed at the bottom end of the lifting plate, a second internal block is movably installed inside the longitudinal tube, a third connecting rod is fixedly installed at the bottom end of the second internal block, the bottom end of the third connecting rod is fixedly connected to the extrusion plate, a slot is provided on the front side of the second internal block, a side tube is installed on the front side of the longitudinal tube, a clamping rod is movably installed inside the side tube, the clamping rod is inserted into the slot, a second spring is installed at the other end of the clamping rod, a pull rod is installed at the other end of the clamping rod, and the pull rod extends to the outside of the side tube.

[0013] Preferably, the bottom mounting member includes two n-shaped frames symmetrically arranged below the extrusion plate, a guide rod is installed on the inner side of the n-shaped frame, two mounting half frames are symmetrically arranged below the n-shaped frame, a guide block is installed on the top of the mounting half frame, the guide block is slidably connected to the guide rod, the corresponding two mounting half frames are bolted and form a sleeve mounting frame, the cylinder body is installed in the two sleeve mounting frames, the two sleeve mounting frames are symmetrically arranged between the two end tubes, a hanger is installed on the top of the n-shaped frame, an end tube is symmetrically installed on the bottom end of the hanger, a T-shaped rod is movably installed inside the end tube, the bottom end of the T-shaped rod is fixedly connected to the n-shaped frame, a sliding block is fixedly installed on the top of the hanger, the sliding block is slidably installed inside the sliding groove, the sliding groove is opened at the bottom end of the extrusion plate, a third spring is installed between the two sliding grooves, a connecting frame is installed at one end of the front side of the n-shaped frame, and a compression rod is installed at the bottom end of the connecting frame.

[0014] Preferably, the downward pressure detection member includes a first wedge block fixedly installed on the top of one end of the detection water tank near the C-shaped channel, a second wedge block is arranged above the first wedge block, and a positioning groove is symmetrically opened on one side of the second wedge block near the C-shaped channel, the downward pressure detection member is inserted into the positioning groove, side panels are symmetrically installed on both sides of the second wedge block, a movable cylinder is provided below the side panels, a movable rod is installed at the bottom end of the side panels, the movable rod is movably installed inside the movable cylinder, a movable groove is slidably installed at the bottom end of the movable cylinder, the movable groove is symmetrically opened at the top of the extrusion plate, and a fourth spring is fixedly installed on the side of the movable cylinder away from the C-shaped channel, and one end of the fourth spring is fixedly connected to the inner wall of the end of the movable groove.

[0015] Preferably, the connecting control component includes a cylinder symmetrically installed on the top of the extrusion plate, the output end of the cylinder passes through the bottom of the extrusion plate, a sealing gasket is provided on the outer wall of the cylinder, the sealing gasket is tightly attached to the extrusion plate, and a downward block is installed on the output end of the cylinder, and an extrusion inclined surface is provided at the bottom end of the downward block. The downward block is located on the side of the fourth wedge block away from the cylinder body, the extrusion inclined surface corresponds to the inclined surface of the fourth wedge block, and a limited vertical surface is provided on the side of the downward block close to the fourth wedge block. The downward block moves downward and pushes the connecting pipe toward the end pipe through the fourth wedge block and is sleeved on the outside of the end pipe. A third wedge block is installed on the side of the limiting vertical surface close to the pressure rod, and the downward block continues to move downward and pushes the sleeve mounting frame to move through the pressure rod.

[0016] Preferably, a detection method for a strength detection device for hydraulic cylinder production is as follows:

[0017] S1. External installation: Install the oil cylinder body in the two sleeve mounting frames at the bottom of the extrusion plate, move the extrusion plate to the inside of the test water tank, and make the positioning block snap into the positioning groove;

[0018] S2, connection and installation: control the downward moving block to move downward, generate pressure on the fourth wedge block, so that the connecting pipe is sleeved on the outside of the end pipe, the oil cylinder body is positioned, and the oil tank is connected to the oil cylinder body at the same time;

[0019] S3. Equipment inspection: disengage the clamping rod from the clamping slot, start the oil pump, and allow the hydraulic oil to continuously enter the cylinder body, so that the output end of the cylinder body moves toward the C-shaped channel, and then the extrusion plate is pushed downward by the push plate, the second piston block, the second wedge block and the first wedge block to inspect the working performance of the cylinder body. At the same time, the extrusion plate generates pressure on the water, and the water pressure acts on the outer shell of the cylinder body, so as to perform a strength test on the cylinder body.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1) During operation, the oil cylinder body is installed at the bottom of the extrusion plate, and the positioning block is inserted into the positioning groove. After the output end of the oil cylinder body moves outward, the second piston block is pushed outward by the first piston block and the hydraulic oil in the C-shaped channel, and then the extrusion plate is pushed downward. On the one hand, the downward movement of the extrusion plate can detect the quality of the oil cylinder body. On the other hand, the extrusion plate generates pressure on the water, so that the water generates uniform water pressure on the surface of the oil cylinder body, thereby performing strength testing on the oil cylinder body. The oil cylinder body is used as a driving part for strength testing, which is convenient for use;

[0022] 2) During operation, a connecting pipe is sleeved on the outer side of the fixed pipe, and the fixed pipe is moved toward the cylinder body and sleeved on the end pipe, so as to fix the position of the cylinder body and facilitate detection. At the same time, the oil tank is connected with the cylinder body, so as to facilitate driving the output end of the cylinder body to move outward and complete the detection. At the same time, the hydraulic oil in the oil tank is filled with pigment. If the strength of the cylinder body is not good and it is damaged by water pressure, the pigment will enter the water, which is convenient for the staff to observe;

[0023] 3) During operation, a longitudinal cylinder and a third connecting rod are installed between the extrusion plate and the hanging plate. When preparing for work, the clamping rod is clamped with the clamping slot, and the oil cylinder body is installed in the sleeve installation frame. The end cylinder is movably connected with the T-shaped rod at the top of the n-shaped frame, so that the oil cylinder body is hoisted at the farthest position at the bottom of the extrusion plate, and the positions of the extrusion plate and the hanging plate are fixed, which is convenient for the installation of the oil cylinder body. After the oil cylinder body is fixed and the clamping rod is disengaged from the clamping slot, the longitudinal movement of the extrusion plate is convenient for detection;

[0024] 4) During operation, the extrusion slope on the downward moving block is adapted to the fourth wedge block on the connecting pipe. When the downward moving block moves downward, the connecting pipe can be pushed toward the end pipe side through the extrusion slope and the fourth wedge block, so that the connecting pipe is sleeved on the outside of the end pipe, the cylinder body is positioned and the oil tank is connected to the cylinder body at the same time. When the downward moving block continues to move downward, the third wedge block generates pressure on the compression rod, pushing the two sleeve mounting frames closer to each other, so that the position of the cylinder body blocked by the sleeve mounting frame can be changed, so that the water pressure can fully act on the outer wall of the cylinder body, thereby improving the strength detection effect of the cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0026] In the attached picture:

[0027] Figure 1 It is a structural schematic diagram of a strength detection device for hydraulic cylinder production of the present invention;

[0028] Figure 2 It is a schematic diagram of the internal structure of the detection water tank of the present invention;

[0029] Figure 3 It is a schematic diagram of the connection structure of the fixed pipe and the connecting pipe of the present invention;

[0030] Figure 4 It is a schematic diagram of the structure of the detection transmission assembly of the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the strength detection component of the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of the connection control member of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the middle connecting piece of the present invention;

[0034] Figure 8 It is a schematic diagram of the structure of the pressing detection member of the present invention;

[0035] Fig. 9 It is a schematic diagram of the bottom mounting structure of the present invention.

[0036] In the figure: 1, detection water tank; 2, longitudinal moving frame; 3, screw; 4, motor; 5, detection transmission assembly; 501, C-shaped channel; 502, first piston block; 503, push plate; 504, first connecting rod; 505, second piston block; 506, positioning block; 507, slide groove; 508, slide plate; 509, fixed plate; 510, transverse cylinder; 511, first internal block; 512, second connecting rod; 513, first spring; 6, strong Degree detection assembly; 601, extrusion plate; 602, lifting plate; 603, middle connector; 6031, longitudinal tube; 6032, second inner block; 6033, third connecting rod; 6034, slot; 6035, side tube; 6036, clamping rod; 6037, second spring; 6038, pull rod; 604, bottom mounting piece; 6041, n-shaped frame; 6042, guide rod; 6043, installation half frame; 6044, guide block; 60 45, connecting frame; 6046, compression rod; 6047, hanger; 6048, end tube; 6049, T-bar; 60410, sliding block; 60411, sliding groove; 60412, third spring; 605, downward pressure detection member; 6051, first wedge block; 6052, second wedge block; 6053, positioning groove; 6054, side plate; 6055, moving tube; 6056, movable rod; 6057, moving groove; 6058, Fourth spring; 606, connecting control member; 6061, downward moving block; 6062, extrusion slope; 6063, limiting vertical surface; 6064, third wedge block; 6065, cylinder; 7, external connection assembly; 701, oil tank; 702, oil pump; 703, fixed pipe; 704, connecting pipe; 705, limiting plate; 706, fifth spring; 707, fourth wedge block; 8, hydraulic cylinder; 801, cylinder body; 802, end pipe. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] Depend on Figure 1-9The present invention relates to a strength detection device for hydraulic cylinder production, comprising a detection water tank 1, a longitudinal moving frame 2 is fixedly installed on the top of one side of the detection water tank 1, a screw rod 3 is rotatably installed inside the longitudinal moving frame 2, the top of the screw rod 3 is fixedly connected to the output shaft of a motor 4, the motor 4 is fixedly installed on the top of the longitudinal moving frame 2, the inside of the detection water tank 1 is filled with water, a detection transmission component 5 is installed on the other side of the detection water tank 1, a strength detection component 6 is installed inside the detection water tank 1, the strength detection component 6 is used to install a hydraulic cylinder 8, an external connection component 7 is installed on the front of the detection water tank 1, the external connection component 7 is used to connect with the hydraulic cylinder 8, the detection transmission component 5 is used to drive the hydraulic cylinder 8 and combine with the strength detection component 6 to generate pressure on the water, and perform strength detection on the hydraulic cylinder 8 itself through the water pressure;

[0039] The hydraulic cylinder 8 includes a cylinder body 801, and end pipes 802 are symmetrically installed at both ends of the cylinder body 801. A pressure valve is installed inside the end pipe 802. When the hydraulic pressure reaches a certain level, the liquid can enter and exit the cylinder body 801.

[0040] The external connection component 7 includes an oil tank 701 and an oil pump 702 installed on the front of the detection water tank 1. One end port of the oil tank 701 is connected to one end port of the oil pump 702 through a connecting hose. The other end port of the oil tank 701 and the other end port of the oil pump 702 are both installed with a fixed pipe 703. The fixed pipe 703 is installed on the front inner wall of the detection water tank 1. The two fixed pipes 703 correspond to the two end pipes 802 respectively. The material of the detection water tank 1 is transparent tempered glass. A top cover is provided on the top of the oil tank 701. The top cover is bolted to the oil tank 701. After the top cover is opened, hydraulic oil can be filled into the oil tank 701. The hydraulic oil is injected with eye-catching color pigments. The diameter of the fixed pipe 703 is the same as the diameter of the end pipe 802. A connecting pipe 704 is provided on the outer side of the fixed pipe 703. The inner wall of the connecting pipe 704 is installed There is a sealing gasket, and a limit plate 705 is installed at the end of the connecting pipe 704. A fifth spring 706 is installed between the limit plate 705 and the inner wall of the detection water tank 1. A fourth wedge block 707 is installed on the side where the two fifth springs 706 are close to each other. After the connecting pipe 704 moves, it is inserted into the outside of the end pipe 802. The outside of the fixed pipe 703 is sleeved with a connecting pipe 704. After the fixed pipe 703 moves toward the cylinder body 801, it is sleeved on the end pipe 802, which is convenient for fixing the position of the cylinder body 801 and facilitating detection. At the same time, the oil tank 701 is connected with the cylinder body 801, which is convenient for driving the output end of the cylinder body 801 to move outward to complete the detection. At the same time, the hydraulic oil in the oil tank 701 is filled with pigment. If the strength of the cylinder body 801 is not good and it is damaged by water pressure, the pigment enters the water, which is convenient for observation by the staff.

[0041] The detection transmission assembly 5 includes a C-shaped channel 501 fixedly installed on one side of the detection water tank 1, one end of the top of the C-shaped channel 501 is connected to the inner cavity of the detection water tank 1, a second piston block 505 is movably installed in the inner cavity of the top of the C-shaped channel 501, and a positioning block 506 is symmetrically installed on one end of the second piston block 505 close to the inner cavity of the detection water tank 1, a slide groove 507 is opened at the top of the C-shaped channel 501, a slide plate 508 is installed on the top of the second piston block 505, a fixing plate 509 is fixedly installed on the top of the C-shaped channel 501, the fixing plate 509 is located on the side of the slide plate 508 away from the detection water tank 1, a transverse cylinder 510 is fixedly installed on the side of the fixing plate 509 close to the slide plate 508, a first internal block 511 is movably installed inside the transverse cylinder 510, a second connecting rod 512 is installed between the first internal block 511 and the slide plate 508, a first spring 513 is installed on the side of the first internal block 511 close to the slide plate 508, and the bottom end of the C-shaped channel 501 A first piston block 502 is installed inside, and hydraulic oil is filled between the first piston block 502 and the second piston block 505 in the C-shaped channel 501. A push plate 503 is arranged inside the test water tank 1, and a first connecting rod 504 is installed between the push plate 503 and the first piston block 502. The cylinder body 801 is installed at the bottom end of the extrusion plate 601, and the positioning block 506 is inserted into the positioning groove 6053. After the output end of the cylinder body 801 moves outward, the second piston block 505 is pushed outward by the first piston block 502 and the hydraulic oil in the C-shaped channel 501, and then the extrusion plate 601 is pushed downward. On the one hand, the extrusion plate 601 moves downward, which can detect the quality of the cylinder body 801. On the other hand, the extrusion plate 601 generates pressure on the water, so that the water generates uniform water pressure on the surface of the cylinder body 801, thereby performing strength detection on the cylinder body 801, and the cylinder body 801 is used as a driving member for strength detection, which is convenient to use.

[0042] The strength detection component 6 includes an extrusion plate 601 arranged inside the detection water tank 1, a hanging plate 602 is provided above the extrusion plate 601, one end of the hanging plate 602 is slidably connected to the longitudinal movable frame 2, the hanging plate 602 is threadedly connected to the screw 3, two middle connecting parts 603 are installed between the extrusion plate 601 and the hanging plate 602, a bottom mounting part 604 is installed at the bottom end of the hanging plate 602, a downward pressure detection part 605 is installed on the side of the top of the extrusion plate 601 close to the C-shaped channel 501, and a connection control part 606 is symmetrically installed on the extrusion plate 601.

[0043] The middle connecting member 603 includes a longitudinal tube 6031 symmetrically installed at the bottom end of the hanging plate 602, a second internal block 6032 is movably installed inside the longitudinal tube 6031, a third connecting rod 6033 is fixedly installed at the bottom end of the second internal block 6032, the bottom end of the third connecting rod 6033 is fixedly connected to the extrusion plate 601, a slot 6034 is provided on the front side of the second internal block 6032, a side tube 6035 is installed on the front side of the longitudinal tube 6031, a clamping rod 6036 is movably installed inside the side tube 6035, the clamping rod 6036 is clamped into the slot 6034, a second spring 6037 is installed on the other end of the clamping rod 6036, a pull rod 6038 is installed on the other end of the clamping rod 6036, and the pull rod 6038 extends to the outside of the side tube 6035.

[0044] The bottom mounting member 604 includes two n-shaped frames 6041 symmetrically arranged below the extrusion plate 601, a guide rod 6042 is installed on the inner side of the n-shaped frame 6041, and two mounting half frames 6043 are symmetrically arranged below the n-shaped frame 6041. A guide block 6044 is installed on the top of the mounting half frame 6043. The guide block 6044 is slidably connected to the guide rod 6042. The corresponding two mounting half frames 6043 are bolted to form a sleeve mounting frame. The cylinder body 801 is installed The two sleeve mounting frames are symmetrically arranged between the two end tubes 802. A hanger 6047 is installed at the top of the n-shaped frame 6041. The end tube 6048 is symmetrically installed at the bottom of the hanger 6047. A T-shaped rod 6049 is movably installed inside the end tube 6048. The bottom end of the T-shaped rod 6049 is fixedly connected to the n-shaped frame 6041. A longitudinal tube 6031 and a third connecting rod 6033 are installed between the extrusion plate 601 and the hanging plate 602. When the oil cylinder body 801 is ready for work, the clamping rod 6036 is clamped with the clamping groove 6034, and the oil cylinder body 801 is installed in the sleeve installation frame. The end tube 6048 is movably connected with the T-shaped rod 6049 at the top of the n-shaped frame 6041, so that the oil cylinder body 801 is hoisted at the farthest position at the bottom of the extrusion plate 601, and the extrusion plate 601 and the hoisting plate 602 are fixed in position, which is convenient for the installation of the oil cylinder body 801. When the oil cylinder body 801 is fixed, the clamping rod 6036 is disengaged from the clamping groove 6034. After being snapped in, it is convenient to detect the longitudinal movement of the extrusion plate 601. A sliding block 60410 is fixedly installed on the top of the hanger 6047. The sliding block 60410 is slidably installed inside the sliding groove 60411. The sliding groove 60411 is opened at the bottom end of the extrusion plate 601. A third spring 60412 is installed between the two sliding grooves 60411. A connecting frame 6045 is installed at one end of the front side of the n-shaped frame 6041, and a pressure rod 6046 is installed at the bottom end of the connecting frame 6045.

[0045] The downward pressure detection member 605 includes a first wedge block 6051 fixedly mounted on the top of one end of the detection water tank 1 near the C-shaped channel 501, a second wedge block 6052 is arranged above the first wedge block 6051, and a positioning groove 6053 is symmetrically opened on one side of the second wedge block 6052 near the C-shaped channel 501, and the downward pressure detection member 605 is inserted into the positioning groove 6053. Side plates 6054 are symmetrically installed on both sides of the second wedge block 6052, and a positioning groove 6053 is arranged below the side plate 6054. There is a moving cylinder 6055, and a movable rod 6056 is installed at the bottom end of the side plate 6054. The movable rod 6056 is movably installed inside the moving cylinder 6055. A moving groove 6057 is slidably installed inside the bottom end of the moving cylinder 6055. The moving groove 6057 is symmetrically opened at the top of the extrusion plate 601. A fourth spring 6058 is fixedly installed on the side of the moving cylinder 6055 away from the C-shaped channel 501, and one end of the fourth spring 6058 is fixedly connected to the inner wall of the end of the moving groove 6057.

[0046] The connecting control member 606 includes a cylinder 6065 symmetrically mounted on the top of the extrusion plate 601. The output end of the cylinder 6065 extends to the bottom of the extrusion plate 601. A sealing gasket is provided on the outer wall of the cylinder 6065. The sealing gasket is in close contact with the extrusion plate 601. A downward moving block 6061 is installed on the output end of the cylinder 6065. An extrusion inclined surface 6062 is provided at the bottom end of the downward moving block 6061. The downward moving block 6061 is located at the fourth wedge block 707 away from the oil cylinder. On one side of the body 801, the extrusion inclined surface 6062 corresponds to the inclined surface of the fourth wedge block 707, and a limited vertical surface 6063 is provided on the side of the downward moving block 6061 close to the fourth wedge block 707. The downward moving block 6061 moves downward through the fourth wedge block 707 to push the connecting pipe 704 toward the end pipe 802 and is sleeved on the outer side of the end pipe 802. The third wedge block 6063 is installed on the side of the limited vertical surface 6063 close to the pressure rod 6046. 064, the downward block 6061 continues to move downward to push the sleeve mounting frame to move through the pressure rod 6046, and the extrusion slope 6062 on the downward block 6061 is adapted to the fourth wedge block 707 on the connecting pipe 704. When the downward block 6061 moves downward, the extrusion slope 6062 and the fourth wedge block 707 can push the connecting pipe 704 to move toward the side of the end pipe 802, so that the connecting pipe 704 is sleeved on the outside of the end pipe 802, positioning the cylinder body 801 and connecting the oil tank 701 to the cylinder body 801 at the same time. When the downward block 6061 continues to move downward, the third wedge block 6064 generates pressure on the pressure rod 6046, pushing the two sleeve mounting frames closer to each other, so that the position of the cylinder body 801 blocked by the sleeve mounting frame can be changed, so that the water pressure can fully act on the outer wall of the cylinder body 801, thereby improving the strength detection effect of the cylinder body 801.

[0047] Working principle: In the original state, the detection water tank 1 is filled with water of a required height, the extrusion plate 601 is located above the detection water tank 1, the two installation half frames 6043 on the n-shaped frame 6041 are opened, and then the oil cylinder body 801 is installed on the inner side of the two installation half frames 6043, and then the two installation half frames 6043 are threadedly connected and fixed, so that the two installation half frames 6043 form a sleeve installation frame, so that the two sleeve installation frames install the oil cylinder body 801, and the two sleeve installation frames are symmetrically arranged on the oil cylinder body 801. The two end pipes 802 are close to each other On one side, the motor 4 is then turned on to rotate the screw 3. Since the screw 3 is threadedly connected to the hanging plate 602, the extrusion plate 601 is driven to move downward into the detection water tank 1. The outer wall of the extrusion plate 601 is in close contact with the inner wall of the detection water tank 1, so that the oil cylinder body 801 is immersed in water. Before the test, a pressure valve is installed in the end tube 802. Since the pressure valve is installed in the end tube 802, after the oil cylinder body 801 is immersed in water, water will not enter the inside of the oil cylinder body 801, which is convenient for the subsequent strength test of the oil cylinder body 801.

[0048] Then, the two air cylinders 6065 are turned on, so that the output end of the air cylinder 6065 moves downward, pushing the downward block 6061 to move downward, so that the extrusion slope 6062 generates pressure on the slope on the fourth wedge block 707, thereby pushing the connecting pipe 704 to move toward the oil cylinder body 801, so that the two connecting pipes 704 are respectively sleeved to the outside of the two end pipes 802. Since the inner wall of the connecting pipe 704 is equipped with a sealing gasket, a seal is formed between the end pipe 802 and the connecting pipe 704, and the oil cylinder body 801 is positioned at the same time, which is convenient for subsequent use;

[0049] During the downward movement of the extrusion plate 601, the staff pulls the second piston block 505 toward the inside of the C-shaped channel 501 through the slide plate 508, so that the positioning block 506 enters the C-shaped channel 501. When the extrusion plate 601 moves downward to a predetermined position, the positioning groove 6053 on the second wedge block 6052 is at the same height as the positioning block 506. At this time, the slide plate 508 is released, and the second piston block 505 moves back under the elastic force of the first spring 513, so that the positioning block 506 is stuck in the positioning groove 6053. After the positioning block 506 is stuck in the positioning groove 6053, in the process of pushing the second wedge block 6052 to move, the movable connection between the movable cylinder 6055 and the movable rod 6056 can make the second wedge block 6052 move horizontally during movement, so as to facilitate the downward pressure on the extrusion plate 601.

[0050] Then, the oil pump 702 is turned on to drive the hydraulic oil in the oil tank 701 to enter the tail end space of the cylinder body 801 through the fixed pipe 703 on one side and the end pipe 802, thereby pushing the output end of the cylinder body 801 to move outward, generating thrust on the push plate 503, pushing the first piston block 502 to move, and then pushing the second piston block 505 to move toward the inside of the detection water tank 1 under the action of the hydraulic oil between the first piston block 502 and the second piston block 505, thereby pushing the second wedge block 6052 to generate pressure on the first wedge block 6051, at this time, the clamping rod 6036 is pulled outward by the pull rod 6038, so that the clamping rod 6036 is disengaged from the clamping groove 6034, and the extrusion plate 601 moves downward under the pressure of the second wedge block 6052, wherein the end tube 6048 is movably connected with the T-bar 6049 at the top of the n-shaped frame 6041, so that the extrusion plate 601 will not affect the position of the cylinder body 801 when it moves downward;

[0051] When the extrusion plate 601 moves downward, it indicates that the oil cylinder body 801 can perform hydraulic work normally and perform quality inspection. At the same time, the downward movement of the extrusion plate 601 can generate pressure on the water in the test water tank 1. Since the oil cylinder body 801 is immersed in the water, the water generates uniform water pressure on each position outside the oil cylinder body 801, so that the strength of the oil cylinder body 801 can be tested. When the strength of the oil cylinder body 801 is poor, the water pressure causes the outer wall of the oil cylinder body 801 to be dented, and seriously causes the outer shell of the oil cylinder body 801 to be deformed and damaged. At this time, the hydraulic oil injected with pigment leaks into the water. At this time, the staff observes that the water in the test water tank 1 changes color, indicating that the oil cylinder body 801 is damaged, so that the strength of the oil cylinder body 801 can be tested by the oil cylinder body 801 itself, which is convenient for use.

[0052] When performing strength testing, the cylinder 6065 is turned on again, so that the output end of the cylinder 6065 moves downward, causing the third wedge block 6064 to generate pressure on the compression rod 6046 on the n-type frame 6041, thereby pushing the two sleeve mounting frames closer to each other, so that the position of the cylinder body 801 blocked by the sleeve mounting frames can be changed, and the water pressure can fully act on the outer wall of the cylinder body 801, thereby improving the strength testing effect of the cylinder body 801.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A strength testing device for hydraulic cylinder production, comprising a testing water tank (1), characterized in that: A longitudinal movable frame (2) is fixedly mounted on the top of one side of the detection water tank (1), a screw rod (3) is rotatably mounted inside the longitudinal movable frame (2), the top of the screw rod (3) is fixedly connected to the output shaft of the motor (4), the motor (4) is fixedly mounted on the top of the longitudinal movable frame (2), the interior of the detection water tank (1) is filled with water, a detection transmission assembly (5) is mounted on the other side of the detection water tank (1), a strength detection assembly (6) is mounted inside the detection water tank (1), the strength detection assembly (6) is used to mount the hydraulic cylinder (8), an external connection assembly (7) is mounted on the front of the detection water tank (1), the external connection assembly (7) is used to connect to the hydraulic cylinder (8), the detection transmission assembly (5) is used to drive the hydraulic cylinder (8) and combine with the strength detection assembly (6) to generate pressure on the water, and perform strength detection on the hydraulic cylinder (8) itself through the water pressure; The hydraulic cylinder (8) comprises a cylinder body (801), end pipes (802) are symmetrically mounted at both ends of the cylinder body (801), and pressure valves are mounted inside the end pipes (802). When the hydraulic pressure reaches a certain level, liquid can enter and exit the cylinder body (801); The external connection component (7) comprises an oil tank (701) and an oil pump (702) installed on the front of the detection water tank (1); one end port of the oil tank (701) is connected to one end port of the oil pump (702) via a connecting hose; the other end port of the oil tank (701) and the other end port of the oil pump (702) are both installed with a fixed pipe (703); the fixed pipe (703) is installed on the front inner wall of the detection water tank (1); the two fixed pipes (703) correspond to the two end pipes (802) respectively; the material of the detection water tank (1) is transparent tempered glass; a top cover is provided on the top of the oil tank (701); The cover is bolted to the oil tank (701), and after the top cover is opened, hydraulic oil can be filled into the oil tank (701), and a pigment of a striking color is injected into the hydraulic oil; the diameter of the fixed tube (703) is the same as the diameter of the end tube (802), a connecting tube (704) is sleeved on the outer side of the fixed tube (703), a sealing gasket is installed on the inner wall of the connecting tube (704), a limit plate (705) is installed at the end of the connecting tube (704), a fifth spring (706) is installed between the limit plate (705) and the inner wall of the detection water tank (1), and a fourth wedge is installed on the side where the two fifth springs (706) are close to each other. The detection transmission assembly (5) comprises a C-shaped channel (501) fixedly mounted on one side of the detection water tank (1), the top end of the C-shaped channel (501) is connected to the inner cavity of the detection water tank (1), a second piston block (505) is movably mounted in the inner cavity of the top of the C-shaped channel (501), a positioning block (506) is symmetrically mounted on one end of the second piston block (505) close to the inner cavity of the detection water tank (1), a slide groove (507) is provided at the top of the C-shaped channel (501), and the second piston block (505) is movably mounted in the inner cavity of the detection water tank (1). 5) is installed with a slide plate (508) at the top end, a fixing plate (509) is fixedly installed at the top end of the C-shaped channel (501), the fixing plate (509) is located on a side of the slide plate (508) away from the detection water tank (1), a transverse cylinder (510) is fixedly installed on a side of the fixing plate (509) close to the slide plate (508), a first internal block (511) is movably installed inside the transverse cylinder (510), a second connecting rod (512) is installed between the first internal block (511) and the slide plate (508), and a first spring (513) is installed on a side of the first internal block (511) close to the slide plate (508); The strength detection component (6) comprises an extrusion plate (601) arranged inside the detection water tank (1), a hanging plate (602) is arranged above the extrusion plate (601), one end of the hanging plate (602) is slidably connected to the longitudinal movable frame (2), the hanging plate (602) is threadedly connected to the screw rod (3), two middle connecting parts (603) are installed between the extrusion plate (601) and the hanging plate (602), a bottom mounting part (604) is installed at the bottom end of the hanging plate (602), a downward pressure detection part (605) is installed on the side of the top of the extrusion plate (601) close to the C-shaped channel (501), and a connection control part (606) is symmetrically installed on the extrusion plate (601); The middle connecting member (603) comprises a longitudinal tube (6031) symmetrically mounted on the bottom end of the hanging plate (602); a second internal block (6032) is movably mounted inside the longitudinal tube (6031); a third connecting rod (6033) is fixedly mounted on the bottom end of the second internal block (6032); the bottom end of the third connecting rod (6033) is fixedly connected to the extrusion plate (601); a slot (6034) is provided on the front side of the second internal block (6032); a side tube (6035) is mounted on the front side of the longitudinal tube (6031); a clamping rod (6036) is movably mounted inside the side tube (6035); the clamping rod (6036) is clamped into the slot (6034); A second spring (6037) is installed at the other end of the clamping rod (6036), and a pull rod (6038) is installed at the other end of the clamping rod (6036), and the pull rod (6038) penetrates to the outside of the side tube (6035); the downward pressure detection member (605) comprises a first wedge block (6051) fixedly installed at the top of one end of the detection water tank (1) close to the C-shaped channel (501), a second wedge block (6052) is arranged above the first wedge block (6051), and a positioning groove (6053) is symmetrically opened on one side of the second wedge block (6052) close to the C-shaped channel (501), and the downward pressure detection member (605) is inserted into the positioning groove (6053), and the second wedge block (6052) is arranged on the top of the first wedge block (6051). Side plates (6054) are symmetrically installed on both sides of the C-shaped block (6052), a movable cylinder (6055) is provided below the side plates (6054), a movable rod (6056) is installed at the bottom end of the side plates (6054), the movable rod (6056) is movably installed inside the movable cylinder (6055), a movable groove (6057) is slidably installed at the bottom end of the movable cylinder (6055), the movable groove (6057) is symmetrically opened at the top of the extrusion plate (601), a fourth spring (6058) is fixedly installed on one side of the movable cylinder (6055) away from the C-shaped channel (501), and one end of the fourth spring (6058) is fixedly connected to the inner wall of the end of the movable groove (6057).

2. A strength detection device for hydraulic cylinder production according to claim 1, characterized in that: A first piston block (502) is installed inside the bottom end of the C-shaped channel (501), and hydraulic oil is filled between the first piston block (502) and the second piston block (505) in the C-shaped channel (501). A push plate (503) is arranged inside the detection water tank (1), and a first connecting rod (504) is installed between the push plate (503) and the first piston block (502).

3. A strength detection device for hydraulic cylinder production according to claim 2, characterized in that: The bottom mounting member (604) comprises two n-shaped frames (6041) symmetrically arranged below the extrusion plate (601), a guide rod (6042) being installed on the inner side of the n-shaped frame (6041), two mounting half frames (6043) being symmetrically arranged below the n-shaped frame (6041), a guide block (6044) being installed on the top of the mounting half frame (6043), the guide block (6044) being slidably connected to the guide rod (6042), the two corresponding mounting half frames (6043) being bolted together to form a sleeve mounting frame, the oil cylinder body (801) being installed in the two sleeve mounting frames, the two sleeve mounting frames being symmetrically arranged between the two end pipes (802), the top of the n-shaped frame (6041) being installed with a hanger (6047) ), an end tube (6048) is symmetrically installed at the bottom end of the hanger (6047), a T-shaped rod (6049) is movably installed inside the end tube (6048), the bottom end of the T-shaped rod (6049) is fixedly connected to the n-shaped frame (6041), a sliding block (60410) is fixedly installed at the top end of the hanger (6047), the sliding block (60410) is slidably installed inside the sliding groove (60411), the sliding groove (60411) is opened at the bottom end of the extrusion plate (601), a third spring (60412) is installed between the two sliding grooves (60411), a connecting frame (6045) is installed at one end of the front side of the n-shaped frame (6041), and a compression rod (6046) is installed at the bottom end of the connecting frame (6045).

4. A strength detection device for hydraulic cylinder production according to claim 3, characterized in that: The connecting control member (606) comprises a cylinder (6065) symmetrically mounted on the top of the extrusion plate (601), the output end of the cylinder (6065) extends to the bottom of the extrusion plate (601), the outer wall of the cylinder (6065) is provided with a sealing gasket, the sealing gasket is in close contact with the extrusion plate (601), a downward moving block (6061) is mounted on the output end of the cylinder (6065), the bottom end of the downward moving block (6061) is provided with an extrusion inclined surface (6062), the downward moving block (6061) is located on the side of the fourth wedge block (707) away from the oil cylinder body (801), and the extrusion inclined surface (6062) is provided on the outer wall of the cylinder (6065). ) corresponds to the inclined surface of the fourth wedge block (707), a limited vertical surface (6063) is provided on the side of the downward moving block (6061) close to the fourth wedge block (707), the downward moving block (6061) moves downward through the fourth wedge block (707) to push the connecting pipe (704) toward the end pipe (802) and is sleeved on the outer side of the end pipe (802), and a third wedge block (6064) is installed on the side of the limited vertical surface (6063) close to the pressure rod (6046), and the downward moving block (6061) continues to move downward through the pressure rod (6046) to push the sleeve installation frame to move.

5. The detection method of the strength detection device for hydraulic cylinder production according to claim 4 is characterized in that: The detection method is as follows: S1. External installation: Install the oil cylinder body (801) in the two sleeve installation frames at the bottom of the extrusion plate (601), move the extrusion plate (601) to the inside of the detection water tank (1), so that the positioning block (506) is inserted into the positioning groove (6053); S2, connection and installation: controlling the downward moving block (6061) to move downward, generating pressure on the fourth wedge block (707), so that the connecting pipe (704) is sleeved on the outside of the end pipe (802), positioning the oil cylinder body (801), and connecting the oil tank (701) to the oil cylinder body (801); S3, equipment testing: the locking rod (6036) is disengaged from the locking groove (6034), and the oil pump (702) is turned on, so that the hydraulic oil continuously enters the oil cylinder body (801), so that the output end of the oil cylinder body (801) moves toward the C-shaped channel (501), and then the extrusion plate (601) is pushed downward by the push plate (503), the second piston block (505), the second wedge block (6052) and the first wedge block (6051), so as to test the working performance of the oil cylinder body (801). At the same time, the extrusion plate (601) generates pressure on the water, and the water pressure acts on the outer shell of the oil cylinder body (801), so as to perform a strength test on the oil cylinder body (801).

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