A hydraulic cylinder push-pull force testing device for a hydraulic equalizer

Abstract

The application relates to the technical field of hydraulic cylinder push-pull force testing, and discloses a hydraulic cylinder push-pull force testing device for a hydraulic balance device, which comprises a workbench and further comprises a screw rod rotatably connected to the right side of the inner cavity of the workbench, a fixing seat is threadedly connected to the surface of the screw rod, a force applying element is arranged at the bottom of the workbench and used for applying force to rotate the screw rod, a push plate is slidably connected to the left side of the top of the workbench, stretching elements for adding weight for testing are arranged on the two sides of the push plate, the application can detect the push force of the hydraulic cylinder, the push plate moves to the left side under the force of the hydraulic cylinder, the right steel rope one is pulled, the fixed column, the fixed disc and the weight are moved together, the push force of the hydraulic cylinder can be detected, the weight can be clamped on the surface of the fixed column, different weights of the weight can be added according to the size of the hydraulic cylinder, and the subsequent testing can be better.

Description

Technical Field

[0001] This invention relates to the field of hydraulic cylinder push-pull force testing technology, specifically to a hydraulic cylinder push-pull force testing device for a hydraulic balancing device. Background Technology

[0002] A hydraulic balancing device is a mechanical device that uses liquid pressure to transmit energy and achieve force or torque balance. Its core function is to adjust parameters such as pressure and flow rate through the hydraulic system so that different components in the equipment or system remain relatively stable or move according to a predetermined law under stress.

[0003] In hydraulic balancing devices, hydraulic cylinders are often an essential component. After production, hydraulic cylinders need to be tested for ease of use. Currently, the testing method involves placing the cylinder directly on a workbench and then connecting it to the hydraulic cylinder's pipeline via the hydraulic system's oil pipes for extension and retraction tests. Since hydraulic cylinders are often used to push or pull heavy objects, simply pushing and retracting them without any equipment is inconvenient for testing, which in turn affects subsequent use. Summary of the Invention

[0004] The purpose of this invention is to provide a hydraulic cylinder push-pull force testing device for a hydraulic balancing device, so as to solve the problems existing in the above-mentioned background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic cylinder push-pull force testing device for a hydraulic balancing device, comprising a worktable, and further comprising:

[0006] A screw is rotatably connected to the right side of the inner cavity of the worktable, and a fixed seat is threaded onto the surface of the screw;

[0007] A force-applying component is disposed at the bottom of the workbench and is used to apply force to rotate the screw. The force-applying component includes a rotating rod rotatably connected to the inner side of the workbench. One end of the rotating rod extends to the outer side of the workbench and is fixedly connected to a crank handle. The other end of the rotating rod is fixedly connected to a worm gear. A worm wheel is fixedly connected to the surface of the screw, and the worm wheel meshes with the worm gear.

[0008] A push plate is slidably connected to the left side of the top of the workbench, and tension members for adding weight to the test are installed on both sides of the push plate.

[0009] Preferably, the tensioning member comprises:

[0010] Steel rope one is fixedly connected to the front and rear sides of both sides of the push plate, and the other end of steel rope one is fixedly connected to a fixing post.

[0011] A fixed plate is fixedly connected to the other end of a fixed column, and a weight that can be added at any time is inserted into the top of the fixed plate and on the surface of the fixed column.

[0012] Preferably, it further includes a support portion, the support portion comprising:

[0013] Steel rope two is fixedly connected to the front and rear ends of both ends of the push plate. The other end of steel rope two is fixedly connected to a support plate. There is a gap between the support plate and the bottom of the fixed plate.

[0014] Guide wheel one is rotatably connected to the front and rear sides of both sides of the workbench, and the surface of steel rope two is slidably connected to the inner side of guide wheel one.

[0015] Preferably, the support further includes a limiting member, which includes a folded rack plate fixedly connected to both sides of the top of the support plate. Gears are rotatably connected to the front and rear sides of both sides of the inner cavity of the workbench, and the gears mesh with one side of the folded rack plate.

[0016] Preferably, the limiting member further includes a snap-fit ​​component, the snap-fit ​​component comprising:

[0017] The ratchet is fixedly connected to the surface of the gear shaft;

[0018] A pawl is rotatably connected to the inner wall of the worktable. The pawl works in conjunction with a ratchet. A spring is fixed to one side of the pawl, and the other end of the spring is fixed to the inner wall of the worktable.

[0019] Preferably, a bias plate is fixedly connected to the other side of the pawl, and push rods are fixed to the front and rear sides of both sides of the push plate.

[0020] Preferably, guide wheels are installed on both the front and rear sides of the inner cavity of the workbench, and the surface of the steel rope is in contact with the inner side of the guide wheel.

[0021] Preferably, both ends of the fixed base are fixed with movable blocks, and the movable blocks are slidably connected to the top of the worktable.

[0022] Preferably, sliders are fixed at both the front and rear sides of one side of the support plate, and the sliders are slidably connected to the surface of the workbench support leg.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] After the hydraulic cylinder is fixed on the top of the fixed base, the fixed base can be moved left and right by the force applied by the force-applying component, so that the output end of the hydraulic cylinder can always be in contact with the right side of the push plate. This can be adjusted according to different sizes of hydraulic cylinders to facilitate subsequent push-pull force testing by pushing and pulling the push plate.

[0025] As the push plate moves to the left, the invention pulls the steel cable on the right, causing the fixed column, fixed plate, and weights to move together. This allows for the detection of the thrust of the hydraulic cylinder. The weights can be attached to the surface of the fixed column, and different weights can be added according to the size of the hydraulic cylinder to facilitate better subsequent testing.

[0026] When performing a pulling test on one side of the weight, the present invention moves the support plate together via a steel cable, ensuring that the support plate is always below the weight. The position of the support plate after movement is fixed by the transmission of the limiting component. This not only protects the weight, but also, after the thrust test, as the hydraulic cylinder retracts, the weight on the right side will be placed on top of the support plate, while the weight on the left side can be pulled to perform the pulling test. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure in this invention;

[0028] Figure 2 This is a schematic diagram of the left-view stereoscopic structure in this invention;

[0029] Figure 3 This is a schematic diagram of the rear-view stereoscopic structure in this invention;

[0030] Figure 4 This is a partial top-view three-dimensional structural schematic diagram of the present invention;

[0031] Figure 5 This is a bottom-view three-dimensional structural diagram of the present invention;

[0032] Figure 6 This is a partial three-dimensional structural diagram of the present invention;

[0033] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at point A in the middle.

[0034] In the diagram: 110, workbench; 120, fixed seat; 130, force-applying component; 131, rotating rod; 132, crank handle; 133, worm gear; 134, worm wheel; 140, screw; 150, push plate; 160, tensioning component; 161, steel rope one; 162, fixed column; 163, fixed plate; 164, weight; 170, support part; 171, steel rope two; 172, support plate; 173, guide wheel one; 174, limiting component; 1741, folded rack plate; 1742, gear; 1743, snap-fit ​​assembly; 17431, ratchet; 17432, pawl; 17433, spring; 17434, push rod; 17435, offset plate; 180, guide wheel two; 190, slider; 200, moving block. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 1-7 As shown, a hydraulic cylinder push-pull force testing device for a hydraulic balancing device includes a worktable 110 and a screw 140 rotatably connected to the right side of the inner cavity of the worktable 110. A fixed seat 120 is threaded onto the surface of the screw 140. Movable blocks 200 are fixed to both ends of the fixed seat 120. The movable blocks 200 are slidably connected to the top of the worktable 110. The movable blocks 200 provide auxiliary support for the fixed seat 120 and maintain its stability during movement. A force-applying component 130 is provided at the bottom of the worktable 110 for applying force to rotate the screw 140. A push plate 150 is slidably connected to the left side of the top of the worktable 110. The push plate 150 has two... Each side is equipped with a tension member 160 for adding weight for testing. The tension member 160 includes a steel cable 161 fixedly connected to the front and rear sides of both sides of the push plate 150. The other end of the steel cable 161 is fixedly connected to a fixed post 162, and the other end of the fixed post 162 is fixedly connected to a fixed plate 163. The top of the fixed plate 163 and the surface of the fixed post 162 are inserted with a weight 164 that can be added at any time. Guide wheels 180 are installed on the front and rear sides of both sides of the inner cavity of the workbench 110. The surface of the steel cable 161 is in contact with the inner side of the guide wheel 180. The guide wheel 180 can provide auxiliary support for the steel cable 161 and maintain stability when pulling.

[0037] When the hydraulic cylinder on the fixed base 120 extends outward through the hydraulic system, it pushes the push plate 150 and pulls the steel cable 161 on the right, thereby moving several weights 164 on the top of the fixed plate 163 together to perform a thrust test. The number of weights 164 can be added to the surface of the fixed column 162 at any time to facilitate testing of different types of hydraulic cylinders.

[0038] It also includes a support part 170, which includes a second steel rope 171 fixedly connected to the front and rear ends of both ends of the push plate 150. The other end of the second steel rope 171 is fixedly connected to a support plate 172. There is a gap between the support plate 172 and the bottom of the fixed plate 163. A slider 190 is fixed to the front and rear of one side of the support plate 172. The slider 190 is slidably connected to the surface of the support leg of the workbench 110. Through the sliding connection of the slider 190 on the support leg, the support plate 172 can be auxiliaryly supported and its stability can be maintained when it moves up and down. A guide wheel 173 is rotatably connected to the front and rear of both sides of the workbench 110. The surface of the second steel rope 171 is slidably connected to the inner side of the guide wheel 173. When the push plate 150 moves, it will pull the second steel rope 171 and drive the support plate 172 to move together, so that the support plate 172 is always located below the fixed plate 163. This not only makes it convenient to protect the weight 164, but also makes it convenient to perform tensile testing on the other side.

[0039] The support part 170 also includes a limiting member 174, which includes a folded rack plate 1741 fixedly connected to both sides of the top of the support plate 172. Gears 1742 are rotatably connected to the front and rear sides of both sides of the inner cavity of the worktable 110. The gears 1742 mesh with one side of the folded rack plate 1741. When the support plate 172 moves upward, it will drive the folded rack plate 1741 to move together and drive the gears 1742 to rotate. Then, the gears 1742 are limited by the snap-fit ​​assembly 1743.

[0040] The limiting component 174 also includes a locking assembly 1743, which includes a ratchet 17431 fixedly connected to the surface of the rotating shaft of the gear 1742. A pawl 17432 is rotatably connected to the inner wall of the worktable 110. The pawl 17432 and the ratchet 17431 cooperate with each other. A spring 17433 is fixed to one side of the pawl 17432, and the other end of the spring 17433 is fixed to the inner wall of the worktable 110. When the gear 1742 rotates, The ratchet 17431 will rotate. After it stops rotating, the spring 17433 will keep the pawl 17432 engaged with the ratchet 17431, thus securing the gear 1742. A deflector plate 17435 is fixedly connected to the other side of the pawl 17432. Push rods 17434 are fixed to the front and rear sides of both sides of the push plate 150. When the push plate 150 moves to its outermost edge, the push rods 17434 will push the deflector plate 17435, causing the pawl 17432 to deflect and thus releasing the ratchet 17431 from its limit, allowing the support plate 172 to return to its starting position.

[0041] The force-applying component 130 includes a rotating rod 131 rotatably connected to the inner side of the worktable 110. One end of the rotating rod 131 extends to the outer side of the worktable 110 and is fixedly connected to a crank 132. The other end of the rotating rod 131 is fixedly connected to a worm gear 133. A worm wheel 134 is fixedly connected to the surface of the screw 140. The worm wheel 134 meshes with the worm gear 133. When adjusting the position of the fixed seat 120, the crank 132 is turned, which drives the rotating rod 131 to rotate, and at the same time drives the worm gear 133 to rotate, and drives the worm wheel 134 to rotate, thereby applying force to rotate the screw 140.

[0042] Working principle: In use, the hydraulic cylinder can be placed on top of the fixed base 120 and fixed by the fixing parts on top. After fixing, the screw 140 can be rotated by the force-applying part 130, which will move the fixed base 120 to the left, so that the piston rod of the hydraulic cylinder contacts the push plate 150. After contact, the pin can be inserted into the surface of the piston rod and the right side of the push plate 150. Then, the oil pipe of the hydraulic system is connected to the two ports on the hydraulic cylinder. Next, according to the size of the hydraulic cylinder, the weight 164 can be placed on the surface of the fixed column 162. Then, the hydraulic cylinder can be controlled by the controller to extend its piston rod outward. After extension, it will push the push plate 150 and pull the steel cable 161, which will move the fixed column 162, the fixed plate 163 and the weight 164 together. When in motion, the support plate 172 moves along with the steel cable 171. At this time, there is still a gap between the support plate 172 and the bottom of the fixed plate 163, which allows for thrust testing. After the piston rod extends to its maximum distance, the folded rack plate 1741 drives the gear 1742 to rotate upwards, and the movement direction of the gear 1742 is limited by the snap-fit ​​assembly 1743. When retracting, the push plate 150 pulls the steel cable 161 on the other side, and a tension test is performed. After the push plate 150 moves to the starting position, the push rod 17434 pushes the offset plate 17435, causing the pawl 17432 to rotate, thereby releasing the limit on the ratchet 17431. Then, the support plate 172, the fixed plate 163, and the weight 164 move downwards to the starting position to facilitate subsequent testing.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Hydraulic cylinder push-pull force testing device for hydraulic balancing devices, comprising a workbench (110), characterized in that, Also includes: The screw (140) is rotatably connected to the right side of the inner cavity of the worktable (110), and the surface of the screw (140) is threadedly connected to the fixed seat (120). A force-applying component (130) is disposed at the bottom of the workbench (110) and is used to apply force to rotate the screw (140). The force-applying component (130) includes a rotating rod (131) rotatably connected to the inner side of the workbench (110). One end of the rotating rod (131) extends to the outer side of the workbench (110) and is fixedly connected to a crank handle (132). The other end of the rotating rod (131) is fixedly connected to a worm gear (133). A worm wheel (134) is fixedly connected to the surface of the screw (140). The worm wheel (134) meshes with the worm gear (133). A push plate (150) is slidably connected to the left side of the top of the workbench (110), and tension members (160) for adding weight to the test are installed on both sides of the push plate (150). The tension member (160) includes: Steel rope one (161) is fixedly connected to the front and rear sides of the push plate (150), and the other end of the steel rope one (161) is fixedly connected to a fixing post (162). A fixed plate (163) is fixedly connected to the other end of a fixed post (162), and a weight (164) that can be added at any time is inserted into the top of the fixed plate (163) and on the surface of the fixed post (162). It also includes a support portion (170), which includes: Steel rope 2 (171) is fixedly connected to the front and rear of both ends of push plate (150). The other end of steel rope 2 (171) is fixedly connected to support plate (172). There is a gap between support plate (172) and bottom of fixed plate (163). Guide wheel one (173) is rotatably connected to the front and rear sides of both sides of the workbench (110), and the surface of steel rope two (171) is slidably connected to the inner side of guide wheel one (173). The support part (170) also includes a limiting member (174), which includes a folded rack plate (1741) fixedly connected to both sides of the top of the support plate (172). Gears (1742) are rotatably connected to the front and rear sides of both sides of the inner cavity of the worktable (110). The gears (1742) mesh with one side of the folded rack plate (1741). The limiting member (174) further includes a snap-fit ​​assembly (1743), the snap-fit ​​assembly (1743) comprising: The ratchet (17431) is fixedly connected to the surface of the gear (1742) shaft; A pawl (17432) is rotatably connected to the inner wall of the worktable (110). The pawl (17432) is used in conjunction with a ratchet (17431). A spring (17433) is fixed on one side of the pawl (17432), and the other end of the spring (17433) is fixed to the inner wall of the worktable (110). A lateral plate (17435) is fixedly connected to the other side of the pawl (17432), and push rods (17434) are fixed to the front and rear sides of both sides of the push plate (150).

2. The hydraulic cylinder push-pull force testing device for hydraulic balance device according to claim 1, characterized in that: Guide wheels (180) are installed on both sides of the inner cavity of the workbench (110) at the front and back, and the surface of the steel rope (161) is in contact with the inner side of the guide wheel (180).

3. The hydraulic cylinder push-pull force testing device for hydraulic balance device according to claim 1, characterized in that: Both ends of the fixed base (120) are fixed with movable blocks (200), and the movable blocks (200) are slidably connected to the top of the workbench (110).

4. The hydraulic cylinder push-pull force testing device for hydraulic balance device of claim 1, wherein: The support plate (172) has sliders (190) fixed on both the front and back sides of one side, and the sliders (190) are slidably connected to the surface of the support leg of the worktable (110).

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