An auxiliary device for testing a tractor lift

Abstract

This application relates to the technical field of lift testing, and discloses an auxiliary device for testing a tractor lift, including a base. A moving device is installed at the top of the base, and a placement table is placed on the upper side of the moving device. A device to be tested is placed on the upper side of the placement table. Moving connection devices are installed on both the front and rear sides of the top of the base, and the moving connection devices on the front and rear sides are arranged in a mirror image. A testing device is installed on the left side of the top of the base. The moving connection device at the rear side includes a first support plate, a second support plate is installed on the front side of the first support plate, and a first hydraulic press is installed on the left side of the second support plate. The advantages of the present invention are as follows: The present invention can test the tractor lift by setting up the testing device, improve the testing effect, without the need for staff to assist beside, and the connecting chain is always in a taut state, which can effectively improve the testing efficiency.

Description

Technical Field

[0001] This application relates to the technical field of lift testing, and particularly to an auxiliary device for testing a tractor lift. Background Art

[0002] The tractor hydraulic lift includes an outer lift arm and an inner lift arm connected together by a lift arm shaft, a piston rod hinged to the inner lift arm, the piston rod being connected to the piston of a hydraulic cylinder, the hydraulic cylinder being installed in a sealed lift housing, the lift housing including an upper lift housing and a lower lift housing, the lift housing serving as a hydraulic oil tank, and a reversing valve installed on one side of the lift housing controlling the lift arm to move up and down.

[0003] After the tractor hydraulic lift is assembled, a lifting test is required to detect the lifting capacity and troubleshoot faults; the existing lifting device includes a standard frame, a standard counterweight is provided on the standard frame, and the standard frame and the lift arm are rigidly connected by a plurality of tie rods. The lift arm rotates to lift and lower the standard frame and the standard counterweight repeatedly for multiple times to verify whether the lift can meet the lifting force requirements and to verify the sealing performance between the lift and the distributor.

[0004] Most of the existing lifting devices need to be assisted by staff during testing, especially the part where the test rope is connected to the lift, which is rather cumbersome, slow, with low test efficiency, large workload for the staff, and prone to danger when the staff is near the test device. Summary of the Invention

[0005] An embodiment of this application provides an auxiliary device for testing a tractor lift, including a base, a moving device is installed at the top of the base, a placement table is placed on the upper side of the moving device, a device to be tested is placed on the upper side of the placement table, moving connection devices are installed on both the front and rear sides of the top of the base, the moving connection devices on the front and rear sides are arranged in a mirror image, and a test device is installed on the left side of the top of the base.

[0006] Further, the moving connection device at the rear side includes a first support plate, a second support plate is installed on the front side of the first support plate, a first hydraulic press is installed on the left side of the second support plate, the telescopic end of the first hydraulic press is connected to a first support block, the upper side of the first support block is connected to a second hydraulic press, the telescopic end of the second hydraulic press is connected to a second support block, the upper side of the second support block is connected to a third hydraulic press, the telescopic end of the third hydraulic press is connected to a third support block, and the front side of the third support block is connected to a fourth support block.

[0007] Further, the testing device includes two groups of third support plates. Placement grooves are provided on the upper sides of the two groups of third support plates. A testing rod is placed inside the placement grooves of the two groups of third support plates. A connecting chain is connected to the lower side of the testing rod, and a counterweight is connected to the lower side of the connecting chain.

[0008] Further, a first limiting rod is connected to the opposite sides of the two groups of third support plates, and a second limiting rod is connected to the opposite sides of the two groups of third support plates.

[0009] Further, two limiting insertion blocks are connected to the outer wall of the testing rod, and an action groove matching the device to be tested is provided on the lower side of the limiting insertion block.

[0010] Further, limiting action plates are connected to both the front and rear sides of the testing rod, and the positions of the limiting action plates match those of the third support plates.

[0011] Further, moving wheels are connected to the four corners of the bottom end of the first support block. A chute plate is connected to the upper side of the base, and a chute matching the moving wheels is provided on the upper side of the chute plate.

[0012] Further, a clamping block is connected to the rear side of the second support block, a card slot plate is connected to the front side of the first support plate, and a card slot matching the clamping block is provided on the front side of the card slot plate.

[0013] Further, multiple mounting plates are connected to the lower side of the device to be tested. Mounting screw holes are provided in the body of the mounting plates, and limiting screw holes matching the mounting screw holes of the mounting plates are provided on the upper side of the placement table.

[0014] Further, a limiting groove is provided on the upper side of the fourth support block. Load-bearing clamping plates are connected to both the front and rear sides of the placement table, and the limiting groove of the fourth support block matches the load-bearing clamping plates.

[0015] The above at least one technical solution adopted in the embodiment of the present application can achieve the following beneficial effects:

[0016] First, by setting up the testing device, the tractor lift can be tested in the present invention, improving the testing effect. There is no need for staff to assist beside, and the connecting chain is always in a taut state, which can effectively improve the testing efficiency.

[0017] Second, by setting up the mobile connection device, the device to be tested can be driven to move under the testing device for testing, reducing the workload of the staff, enabling the device to perform assembly line testing without manual assistance.

[0018] Thirdly, by providing an acting groove in the present invention, it is convenient for the limiting insert block to be quickly connected to the device under test, improving the connection speed with the device under test. By providing a sliding groove plate in cooperation with a moving wheel, it assists the first support block to move, preventing the weight borne by the first support block from damaging the first hydraulic press. By providing a clamping block in cooperation with a clamping groove plate to limit the second support block, it assists the second support block in bearing the weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a schematic structural diagram of the mobile connection device of the present invention;

[0022] Figure 3 is a schematic structural diagram of the test device of the present invention;

[0023] Figure 4 is a top view of the present invention;

[0024] Figure 5 is a side view of the present invention.

[0025] In the figure: 100, base; 200, mobile device; 300, placement table; 310, load-bearing clamping plate; 400, device under test; 410, mounting plate; 500, mobile connection device; 510, first support plate; 520, second support plate; 530, first hydraulic press; 540, first support block; 541, moving wheel; 542, sliding groove plate; 550, second hydraulic press; 560, second support block; 561, clamping groove plate; 570, third hydraulic press; 580, third support block; 590, fourth support block; 600, test device; 610, third support plate; 620, test rod; 630, connecting chain; 640, counterweight; 650, first limiting rod; 660, second limiting rod; 670, limiting insert block; 680, limiting acting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0027] The technical solutions provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0028] In this embodiment, as Figures 1 to 5 shown, an auxiliary device for testing a tractor lift includes a base 100. A moving device 200 is installed at the top of the base 100. A placement table 300 is placed on the upper side of the moving device 200. A device to be tested 400 is placed on the upper side of the placement table 300. The device to be tested 400 is a common tractor lift on the market. Moving connection devices 500 are installed on both the front and rear sides of the top of the base 100. The moving connection devices 500 are responsible for moving the device to be tested 400 to a testing device 600. The device to be tested 400 is tested for lifting force through the testing device 600. The moving connection devices 500 on both the front and rear sides are arranged in a mirror image. A testing device 600 is installed on the left side of the top of the base 100.

[0029] Specifically, the rear moving connection device 500 includes a first support plate 510. A second support plate 520 is installed on the front side of the first support plate 510. A first hydraulic press 530 is installed on the left side of the second support plate 520. The first hydraulic press 530 is parallel to the ground. The telescopic end of the first hydraulic press 530 is connected to a first support block 540. The upper side of the first support block 540 is connected to a second hydraulic press 550. The second hydraulic press 550 is perpendicular to the ground. The telescopic end of the second hydraulic press 550 is connected to a second support block 560. The upper side of the second support block 560 is connected to a third hydraulic press 570. The third hydraulic press 570 is parallel to the ground. The first hydraulic press 530 drives the device under test 400 to move left and right. The second hydraulic press 550 drives the device under test 400 to move up and down. The third hydraulic press 570 fixes and clamps the device under test 400. The telescopic end of the third hydraulic press 570 is connected to a third support block 580. The front side of the third support block 580 is connected to a fourth support block 590. By setting the moving connection device 500, the device under test 400 can be driven to move to the lower side of the test device 600 for testing. The test device 600 includes two groups of third support plates 610. Placement grooves are provided on the upper sides of the two groups of third support plates 610. A test rod 620 is placed inside the placement grooves of the two groups of third support plates 610. A connecting chain 630 is connected to the lower side of the test rod 620. A counterweight 640 is connected to the lower side of the connecting chain 630. By setting the test device 600, the tractor lift can be tested, improving the test effect. There is no need for staff to assist beside. And the connecting chain 630 is always in a taut state, which can effectively improve the test efficiency. A first limiting rod 650 is connected to the opposite sides of the two groups of third support plates 610. The test rod 620, the second limiting rod 660 and the first limiting rod 650 are arranged in a triangle. A second limiting rod 660 is connected to the opposite sides of the two groups of third support plates 610. A limiting sleeve for the connecting chain 630 can be provided on the outer walls of the second limiting rod 660 and the first limiting rod 650 to prevent the connecting chain 630 from shifting and shaking during use, avoiding affecting the test work of the device under test 400. By setting the second limiting rod 660 and the first limiting rod 650 to limit the connecting chain 630, the weight of the counterweight 640 is borne by the second limiting rod 660 and will not cause damage to the device under test 400. The device under test 400 only needs to test the lifting force. Two limiting insertion blocks 670 are connected to the outer wall of the test rod 620. An action groove matching the device under test 400 is provided on the lower side of the limiting insertion block 670. By setting the action groove, it is convenient for the limiting insertion block 670 to be quickly connected to the device under test 400, improving the connection speed with the device under test 400. Limiting action plates 680 are connected to the front and rear sides of the test rod 620. The position of the limiting action plate 680 matches that of the third support plate 610. By setting the limiting action plate 680 to limit the position of the test rod 620, the test rod 620 is prevented from detaching from the third support plate 610.During the use of the limit action plate 680, it does not contact the third support plate 610 to avoid affecting the test of the device under test 400. Moving wheels 541 are connected to the four corners of the bottom end of the first support block 540. A chute plate 542 is connected to the upper side of the base 100. Chutes matching the moving wheels 541 are provided on the upper side of the chute plate 542. By setting the cooperation between the chute plate 542 and the moving wheels 541, the movement of the first support block 540 is assisted to avoid damage to the first hydraulic press 530 caused by the weight borne by the first support block 540. A clamping block is connected to the rear side of the second support block 560. A clamping groove plate 561 is connected to the front side of the first support plate 510. Clamping grooves matching the clamping block are provided on the front side of the clamping groove plate 561. By setting the cooperation between the clamping block and the clamping groove plate 561, the second support block 560 is limited to assist the second support block 560 in bearing weight. Multiple mounting plates 410 are connected to the lower side of the device under test 400. The mounting plates 410 are lifters. The main body of the screw hole seat mounting plate 410 for fixing on the tractor chassis is provided with mounting screw holes. Limit screw holes matching the mounting screw holes of the mounting plates 410 are provided on the upper side of the placement table 300. By setting the mounting plates 410, the device under test 400 is quickly connected to the placement table 300 to improve the detection speed. A limit groove is provided on the upper side of the fourth support block 590. Load-bearing clamping plates 310 are connected to the front and rear sides of the placement table 300. The limit groove of the fourth support block 590 matches the load-bearing clamping plates 310. By setting the load-bearing clamping plates 310, the placement table 300 can be quickly connected to the moving connection device 500. When the device under test 400 is tested, pressure is applied to the placement table 300, and the placement table 300 applies pressure to the load-bearing clamping plates 310. The load-bearing clamping plates 310 are limited by the fourth support block 590. When the device under test 400 is pressed down and tilted to drive the placement table 300 to tilt, the fourth support block 590 limits the load-bearing clamping plates 310 to complete the weight bearing of the device under test 400. In order to prevent the load-bearing clamping plates 310 from detaching from the fourth support block 590, the thickness of the fourth support block 590 can be increased to make the load-bearing clamping plates 310 penetrate into the limit groove of the fourth support block 590 to improve the operation stability of the device.,

[0030] Working process of the present invention: When in use, the device 400 to be tested is fixed on the upper side of the placement table 300 through the mounting plate 410. The mounting plate 410 is a lifting device for the screw hole seat fixed on the tractor chassis. The placement table 300 is placed on the upper side of the moving device 200. The moving device 200 is started, and the placement table 300 is driven by the moving device 200 to move. The device 400 to be tested is driven by the placement table 300 to move to the opposite side of the two moving connection devices 500. The third hydraulic press 570 is started, and the third support block 580 and the fourth support block 590 are driven by the third hydraulic press 570 to approach the placement table 300. The second hydraulic press 550 is started, and the second support block 560 is driven by the second hydraulic press 550 to move up and down. The third support block 580 and the fourth support block 590 are driven to move up and down by the up and down movement of the second support block 560. The fourth support block 590 is inserted into the lower side of the load-bearing card plate 310, and the load-bearing card plate 310 and the placement table 300 are driven by the fourth support block 590 to move away from the moving device 200. The first hydraulic press 530 is started, and the first support block 540 is driven by the first hydraulic press 530 to move left and right. The third support block 580 and the fourth support block 590 are driven to move left and right by the first support block 540. The device 400 to be tested and the placement table 300 are driven by the moving connection device 500 to move to the lower side of the testing device 600. The lifting arm of the device 400 to be tested is inserted into the limit insertion block 670 to complete the connection between the device 400 to be tested and the testing rod 620. The device 400 to be tested is started, and the testing rod 620 is driven to move upward by the lifting arm of the device 400 to be tested. The testing rod 620 drives the connecting chain 630 and the counterweight 640 to move upward to complete the test of the device 400 to be tested. The connecting chain 630 bypasses the lower side of the first limiting rod 650 and the upper side of the second limiting rod 660 and is perpendicular to the ground. The connecting chain 630 is always in a taut state. Even when the testing rod 620 returns to its original position after the device 400 to be tested completes the test, it will be limited by the placement groove of the third support plate 610, so that the connecting chain 630 remains in a taut state. When the connecting chain 630 drives the counterweight 640 to move left and right, the moving wheel 541 assists the first support block 540 to move under the limitation of the chute plate 542 to prevent the weight borne by the first support block 540 from damaging the first hydraulic press 530. When the second support block 560 moves upward and leftward, the block of the second support block 560 moves inside the slot of the slot plate 561. The second support block 560 is limited by the cooperation of the slot plate 561 and the block to assist the second support block 560 in bearing the weight. The position of the testing rod 620 is limited by setting the limiting action plate 680 to prevent the testing rod 620 from detaching from the third support plate 610. The limiting action plate 680 does not contact the third support plate 610 during use to avoid affecting the test of the device 400 to be tested. Limiting sleeves for the connecting chain 630 can be provided on the outer walls of the second limiting rod 660 and the first limiting rod 650 to prevent displacement and jitter of the connecting chain 630 during use.Avoid its influence on the test of the device under test 400. When the device under test 400 is tested, it will exert pressure on the placement table 300, and the placement table 300 will exert pressure on the load-bearing card board 310. The load-bearing card board 310 is limited by the fourth support block 590. When the device under test 400 is pressed down and tilted, driving the placement table 300 to tilt, the fourth support block 590 limits the load-bearing card board 310, thereby completing the load-bearing of the device under test 400. In order to prevent the load-bearing card board 310 from detaching from the fourth support block 590, the thickness of the fourth support block 590 can be increased, so that the load-bearing card board 310 extends into the limit groove of the fourth support block 590, improving the stability of the operation of this device. After the device under test 400 is tested, it returns to its original position with the placement table 300, and then is removed through the moving device 200. During the use of this device, pipeline testing can be carried out without manual assistance.

[0031] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. An auxiliary device for testing a tractor lift, characterized in that: It includes a base (100), a moving device (200) is installed at the top of the base (100), a placing table (300) is placed on the upper side of the moving device (200), a device under test (400) is placed on the upper side of the placing table (300), moving connection devices (500) are installed on both the front and rear sides of the top of the base (100), and the moving connection devices (500) on the front and rear sides are arranged in a mirror image, and a testing device (600) is installed on the left side of the top of the base (100); The moving connection device (500) at the rear side includes a first support plate (510), a second support plate (520) is installed on the front side of the first support plate (510), a first hydraulic press (530) is installed on the left side of the second support plate (520), the telescopic end of the first hydraulic press (530) is connected to a first support block (540), the upper side of the first support block (540) is connected to a second hydraulic press (550), the telescopic end of the second hydraulic press (550) is connected to a second support block (560), the upper side of the second support block (560) is connected to a third hydraulic press (570), the telescopic end of the third hydraulic press (570) is connected to a third support block (580), and the front side of the third support block (580) is connected to a fourth support block (590); Four corners of the bottom end of the first support block (540) are all connected with moving wheels (541), the upper side of the base (100) is connected with a chute plate (542), and chutes matching the moving wheels (541) are opened on the upper side of the chute plate (542); A clamping block is connected to the rear side of the second support block (560), a clamping groove plate (561) is connected to the front side of the first support plate (510), and a clamping groove matching the clamping block is opened on the front side of the clamping groove plate (561). By setting the clamping block to cooperate with the clamping groove plate 561, the second support block 560 is limited, and the second support block 560 is assisted in bearing weight; Multiple groups of mounting plates (410) are connected to the lower side of the device under test (400), mounting screw holes are opened in the body of the mounting plates (410), and limiting screw holes matching the mounting screw holes of the mounting plates (410) are opened on the upper side of the placing table (300). When the device under test 400 is tested, pressure will be applied to the placing table 300, and the placing table 300 will apply pressure to the load-bearing clamping plate 310. The load-bearing clamping plate 310 is limited by the fourth support block 590. When the device under test 400 is pressed down and tilted to drive the placing table 300 to tilt, the fourth support block 590 limits the load-bearing clamping plate 310, and thus the load-bearing of the device under test 400 is completed; A limiting groove is opened on the upper side of the fourth support block (590), load-bearing clamping plates (310) are connected to both the front and rear sides of the placing table (300), and the limiting groove of the fourth support block (590) matches the load-bearing clamping plates (310).

2. The auxiliary device for testing a tractor lift according to claim 1, wherein: The test device (600) includes two groups of third support plates (610). Placement grooves are formed in the upper sides of the two groups of third support plates (610). A test rod (620) is placed inside the placement grooves of the two groups of third support plates (610). A connecting chain (630) is connected to the lower side of the test rod (620), and a counterweight (640) is connected to the lower side of the connecting chain (630).

3. An auxiliary device for testing a tractor lift according to claim 2, characterized in that: A first limiting rod (650) is connected to the facing sides of the two groups of third support plates (610), and a second limiting rod (660) is connected to the facing sides of the two groups of third support plates (610).

4. The auxiliary device for testing a tractor lift according to claim 2, wherein: Two limiting insertion blocks (670) are connected to the outer wall of the test rod (620). An action groove matching the device to be tested (400) is formed in the lower side of the limiting insertion block (670).

5. An auxiliary device for testing a tractor lift according to claim 2, characterized in that: Limiting action plates (680) are connected to the front and rear sides of the test rod (620), and the positions of the limiting action plates (680) match those of the third support plates (610).

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