Hydraulic rod strength testing device

Abstract

The utility model discloses a strength testing device for a hydraulic rod. The strength testing device comprises a fixed frame; a fixing box is fixed to the top of the fixing frame, a fixing base box is fixed to the bottom of the fixing frame, a first lifting screw is rotationally connected to the top of an inner cavity of the fixing frame through a bearing, and an internal thread column barrel is in threaded connection to the bottom of the first lifting screw. By adjusting the limiting bolt on the internal thread column barrel through the thread, the internal thread column barrel is connected with the first lifting screw rod and the fixing frame, the state of the internal thread column barrel can be conveniently switched, and after the first lifting screw rod and the internal thread column barrel are connected and rotate synchronously, the first lifting screw rod can rotate synchronously. The torsion testing device can be matched with the supporting seat to perform torsion testing on the testing hydraulic rod, meanwhile, after a limiting bolt is clamped in a long groove, rotation of an internal thread column barrel and rotation of a first lifting screw are limited, the internal thread column barrel can be driven to move up and down, axial pressure testing can be conveniently performed on the testing hydraulic rod, and the strength of the testing hydraulic rod in different states is detected.

Description

Technical Field

[0001] This utility model relates to the field of strength testing technology, specifically a hydraulic rod strength testing device. Background Technology

[0002] Strength testing checks a program's ability to withstand abnormal conditions; it checks whether the performance degradation of the system under extreme conditions is within an acceptable range.

[0003] In the prior art, Chinese utility model publication number CN218885656U discloses a hydraulic rod strength testing device, including a device body, a testing platform, a clamping mechanism, a pressure platform, and a high-strength glass door. The testing platform is located inside the device body. Wheel grooves are provided on the bottom of the device body below the testing platform, and movable wheels are installed at the bottom ends of the testing platform at the wheel groove positions, with the movable wheels cooperating with the wheel grooves. The clamping mechanism is located on the two inner walls of the device body above the testing platform. A second telescopic drive component is installed at the center of the top of the device body. The pressure platform is fixed to the output end of the second telescopic drive component. A protective plate is fixed to the outer wall of one side of the device body, and the high-strength glass door is located on the outer wall of the device body on the side away from the protective plate. This utility model not only has safety protection functions and high testing safety, and facilitates the fixation of the hydraulic rod, but also makes the pressure during testing more stable.

[0004] In the above technical solution, the hydraulic rod is pressurized by moving the pressure table down in conjunction with the test table to test the axial compression strength of the hydraulic rod. However, some hydraulic rods are designed with different driving methods of hydraulic equipment in mind, and the torsional strength of the hydraulic rod also needs to be considered to prevent the hydraulic rod from breaking due to huge internal forces when rotating. Traditional testing equipment only has a single detection function and cannot meet the requirements of strength testing of different hydraulic rods. Utility Model Content

[0005] The purpose of this utility model is to provide a hydraulic rod strength testing device. When the limiting bolt movably connects the internal threaded cylinder to the fixed frame, the rotation of the first lifting screw can drive the internal threaded cylinder to move up and down, which facilitates axial pressure on the hydraulic rod being tested. When the limiting bolt connects the internal threaded cylinder to the first lifting screw, the first lifting screw drives the internal threaded cylinder to rotate synchronously. With the cooperation of the support seat, it is convenient to torsion the hydraulic rod being tested, and the strength of the hydraulic rod under different states can be tested, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic rod strength testing device, comprising:

[0007] Fixed frame;

[0008] A fixed box is fixed to the top of the fixed frame, and a fixed base box is fixed to the bottom of the fixed frame. A first lifting screw is rotatably connected to the top of the inner cavity of the fixed frame via a bearing. An internally threaded cylinder is threaded to the bottom of the first lifting screw. Threaded holes are provided on both sides of the internally threaded cylinder. A through groove is provided inside the first lifting screw. Long grooves are provided on both sides of the fixed frame. A limit bolt is threaded to the inner cavity of the threaded hole. A drive assembly for driving the first lifting screw is provided on the top of the fixed box.

[0009] A support base is movably provided at the bottom of the inner cavity of the fixed frame, and a lifting assembly for adjusting the support base up and down is provided in the inner cavity of the fixed base box.

[0010] Preferably, the drive assembly includes a hydraulic cylinder fixed to one side of the fixed box, the piston rod of the hydraulic cylinder passing through the inner cavity of the fixed box and fixed with a rack plate, the top of the first lifting screw passing through the inner cavity of the fixed box and fixed with a driven gear, the driven gear meshing with the rack plate.

[0011] Preferably, the lifting assembly includes a second lifting screw rotatably connected to the bottom of the inner cavity of the fixed frame via a bearing. The top of the second lifting screw is threaded through the interior of the support base, and the bottom of the second lifting screw is threaded through the inner cavity of the fixed base box and fixed with a worm gear. The inner cavity of the fixed base box is rotatably connected to a worm gear via a bearing, and one end of the worm gear is threaded through the outer side of the fixed base box and fixed with a turntable.

[0012] Preferably, the inner cavity of the fixed box is provided with a limiting groove, and a limiting block is slidably connected to the inner cavity of the limiting groove. One side of the limiting block passes through the limiting groove and is fixed to the outer side of the rack plate.

[0013] Preferably, the front of the fixed frame is hinged to a protective door, and the protective door is provided with an observation window.

[0014] Preferably, support plates are fixed on both sides of the fixed frame, and the bottom of the support plates is fixed to the top of the fixed base box.

[0015] Preferably, the support base and the internally threaded cylinder are provided with grooves on their opposite sides for limiting the hydraulic rod, and the outer sides of the support base and the internally threaded cylinder are connected with fastening bolts for fixing and limiting the hydraulic rod.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model adjusts the limiting bolts on the internal threaded cylinder to connect the internal threaded cylinder to the first lifting screw and the fixed frame, facilitating the switching of the internal threaded cylinder's state. When the first lifting screw and the internal threaded cylinder rotate synchronously, the torque test of the test hydraulic rod can be performed in conjunction with the support seat. At the same time, after the limiting bolts are engaged in the long groove, the rotation of the internal threaded cylinder is restricted. The rotation of the first lifting screw can drive the internal threaded cylinder to move up and down, facilitating the axial pressure test of the test hydraulic rod and detecting the strength of the test hydraulic rod under different states.

[0018] 2. This utility model improves the stability of the test hydraulic rod when it contacts the support seat and the internal threaded cylinder by using fastening bolts, and prevents the test hydraulic rod from rotating when the torque test is performed. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a cross-sectional perspective view of the fixing frame and fixing box of this utility model.

[0021] Figure 3 This is a side view sectional three-dimensional structural diagram of the fixed base box of this utility model;

[0022] Figure 4 This is a cross-sectional three-dimensional structural diagram of the internally threaded cylinder of this utility model.

[0023] The following are the labeling elements in the diagram: 1. Fixed frame; 2. Fixed box; 3. Fixed base box; 4. First lifting screw; 5. Internally threaded cylinder; 6. Threaded hole; 7. Through slot; 8. Long slot; 9. Limit bolt; 10. Drive assembly; 101. Hydraulic cylinder; 102. Rack plate; 103. Driven gear; 11. Support seat; 12. Lifting assembly; 121. Second lifting screw; 122. Worm gear; 123. Worm; 124. Turntable; 13. Limit slot; 14. Limit block; 15. Protective door; 16. Support plate; 17. Fastening bolt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides, for example Figures 1-4The hydraulic rod strength testing device shown includes:

[0026] Fixed frame 1;

[0027] A fixed box 2 is fixed to the top of the fixed frame 1, and a fixed base box 3 is fixed to the bottom of the fixed frame 1. A first lifting screw 4 is rotatably connected to the top of the inner cavity of the fixed frame 1 through a bearing. An internal threaded cylinder 5 is threaded to the bottom of the first lifting screw 4. Threaded holes 6 are opened on both sides of the internal threaded cylinder 5. A through groove 7 is opened inside the first lifting screw 4. Long grooves 8 are opened on both sides of the fixed frame 1. A limit bolt 9 is threaded to the inner cavity of the threaded hole 6. A drive assembly 10 for driving the first lifting screw 4 is provided on the top of the fixed box 2.

[0028] A support seat 11 is movably provided at the bottom of the inner cavity of the fixed frame 1, and a lifting component 12 for adjusting the support seat 11 up and down is provided in the inner cavity of the fixed base box 3.

[0029] By adjusting the limiting bolt 9 on the threaded inner thread cylinder 5, the inner thread cylinder 5 is connected to the first lifting screw 4 and the fixed frame 1 respectively, which facilitates the switching of the state of the inner thread cylinder 5. When the first lifting screw 4 and the inner thread cylinder 5 are connected and rotate synchronously, the torque test of the test hydraulic rod can be performed in conjunction with the support seat 11. At the same time, after the limiting bolt 9 is engaged in the long groove 8, the rotation of the inner thread cylinder 5 is restricted. The rotation of the first lifting screw 4 can drive the inner thread cylinder 5 to move up and down, which facilitates the axial pressure test of the test hydraulic rod and detects the strength of the test hydraulic rod under different states.

[0030] Among them, such as Figure 2 As shown:

[0031] The drive assembly 10 includes a hydraulic cylinder 101 fixed to one side of the fixed box 2. The piston rod of the hydraulic cylinder 101 passes through the inner cavity of the fixed box 2 and is fixed with a rack plate 102. The top of the first lifting screw 4 passes through the inner cavity of the fixed box 2 and is fixed with a driven gear 103. The driven gear 103 meshes with the rack plate 102. The hydraulic cylinder 101 drives the rack plate 102 to move within the fixed box 2, which facilitates the rotation of the first lifting screw 4 by the driven gear 103, and then facilitates the first lifting screw 4 to drive the internal threaded cylinder 5.

[0032] Furthermore, such as Figure 3 As shown:

[0033] The lifting assembly 12 includes a second lifting screw 121 rotatably connected to the bottom of the inner cavity of the fixed frame 1 via a bearing. The top of the second lifting screw 121 is threaded through the interior of the support base 11, and the bottom of the second lifting screw 121 is threaded through the inner cavity of the fixed base box 3 and a worm gear 122 is fixed thereon. The inner cavity of the fixed base box 3 is rotatably connected to a worm gear 123 via a bearing. One end of the worm gear 123 is threaded through the outside of the fixed base box 3 and a turntable 124 is fixed thereon. The cooperation between the worm gear 123 and the worm gear 122 facilitates the driving of the second lifting screw 121. Then, the second lifting screw 121 is threadedly connected to the support base 11, driving the support base 11 to move up and down, adjusting the distance between the support base 11 and the internal threaded cylinder 5, and facilitating the clamping and fixing of the test hydraulic rod.

[0034] Preferred, such as Figure 2 and Figure 4 As shown:

[0035] The inner cavity of the fixed box 2 is provided with a limiting groove 13. A limiting block 14 is slidably connected to the inner cavity of the limiting groove 13. One side of the limiting block 14 passes through the limiting groove 13 and is fixed to the outside of the rack plate 102. The limiting block 14 slides in the limiting groove 13, which facilitates the limiting of the rack plate 102 and prevents the rack plate 102 from shaking and affecting the meshing with the driven gear 103.

[0036] It is worth noting that, such as Figure 1 As shown:

[0037] A protective door 15 is hinged to the front of the fixed frame 1. An observation window is provided on the protective door 15. The protective door 15 not only facilitates the entry and exit of the test hydraulic rod into and out of the fixed frame 1 for disassembly and assembly, but also serves as a safety protection to prevent the test hydraulic rod from breaking and flying.

[0038] In a further preferred embodiment, such as Figure 1 As shown:

[0039] Support plates 16 are fixed on both sides of the fixed frame 1. The bottom of the support plates 16 is fixed to the top of the fixed base box 3. The support plates 16 are used to support and reinforce the fixed frame 1, preventing the fixed frame 1 from deforming under stress when the test hydraulic rod is tested for strength.

[0040] In addition, such as Figure 1-3 As shown:

[0041] The support base 11 and the internally threaded cylinder 5 are both provided with grooves on their opposite sides to limit the hydraulic rod. The support base 11 and the internally threaded cylinder 5 are connected by fastening bolts 17 to fix and limit the hydraulic rod. By cooperating with the fastening bolts 17, the stability of the test hydraulic rod when in contact with the support base 11 and the internally threaded cylinder 5 is improved, and the test hydraulic rod is prevented from rotating when the torque test is performed on the test hydraulic rod.

[0042] In practical use, the hydraulic rod to be tested is placed in the fixed frame 1, and then the hydraulic rod is connected to the internal threaded cylinder 5. The turntable 124 is then rotated, causing the turntable 124 to drive the worm gear 123 to drive the worm wheel 122, causing the second lifting screw 121 to drive the support seat 11 upwards to clamp the hydraulic rod for testing. It is then fixed using the fastening bolt 17. Next, the limiting bolt 9 passes through the long slot 8 on the outside of the fixed frame 1 and is threaded into the threaded hole 6 on the outside of the internal threaded cylinder 5, limiting the movement of the internal threaded cylinder 5. The hydraulic cylinder 101 is then activated, causing the hydraulic cylinder 101 to drive the rack plate 102 to move within the fixed box 2. Driven by the driven gear 103, the first lifting screw 4 is driven to move the internal threaded cylinder 5 downward within the fixed frame 1, applying axial pressure to the test hydraulic rod. Then, the limiting bolt 9 is removed from the long slot 8 and threaded into the threaded hole 6 from inside the fixed frame 1. At the same time, the limiting bolt 9 passes through the through slot 7 on the first lifting screw 4, connecting the internal threaded cylinder 5 to the first lifting screw 4. The first lifting screw 4 drives the internal threaded cylinder 5 to rotate synchronously. At this time, the rotation of the internal threaded cylinder 5 applies rotational torque to the test hydraulic rod, which facilitates the testing of different strengths of the hydraulic rod under different conditions.

[0043] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic rod strength testing device, characterized in that, include: Fixed frame (1); The top of the fixed frame (1) is fixed with a fixed box (2), and the bottom of the fixed frame (1) is fixed with a fixed base box (3). The top of the inner cavity of the fixed frame (1) is rotatably connected to a first lifting screw (4) through a bearing. The bottom of the first lifting screw (4) is threadedly connected to an internal thread cylinder (5). Threaded holes (6) are opened on both sides of the internal thread cylinder (5). A through groove (7) is opened inside the first lifting screw (4). Long grooves (8) are opened on both sides of the fixed frame (1). A limit bolt (9) is threadedly connected to the inner cavity of the threaded hole (6). A drive assembly (10) for driving the first lifting screw (4) is provided on the top of the fixed box (2). The bottom of the inner cavity of the fixed frame (1) is movably provided with a support seat (11), and the inner cavity of the fixed base box (3) is provided with a lifting component (12) for adjusting the support seat (11) up and down.

2. The hydraulic rod strength testing device according to claim 1, characterized in that: The drive assembly (10) includes a hydraulic cylinder (101) fixed to one side of the fixed box (2). The piston rod of the hydraulic cylinder (101) passes through the inner cavity of the fixed box (2) and is fixed with a rack plate (102). The top of the first lifting screw (4) passes through the inner cavity of the fixed box (2) and is fixed with a driven gear (103). The driven gear (103) meshes with the rack plate (102).

3. The hydraulic rod strength testing device according to claim 1, characterized in that: The lifting assembly (12) includes a second lifting screw (121) rotatably connected to the bottom of the inner cavity of the fixed frame (1) via a bearing. The top of the second lifting screw (121) is threaded through the inside of the support base (11), and the bottom of the second lifting screw (121) is threaded through the inner cavity of the fixed base box (3) and a worm gear (122) is fixed thereon. The inner cavity of the fixed base box (3) is rotatably connected to a worm gear (123) via a bearing. One end of the worm gear (123) is threaded through the outside of the fixed base box (3) and a turntable (124) is fixed thereon.

4. The hydraulic rod strength testing device according to claim 1, characterized in that: The inner cavity of the fixed box (2) is provided with a limiting groove (13), and the inner cavity of the limiting groove (13) is slidably connected to a limiting block (14). One side of the limiting block (14) passes through the limiting groove (13) and is fixed to the outside of the rack plate (102).

5. The hydraulic rod strength testing device according to claim 1, characterized in that: The front of the fixed frame (1) is hinged to a protective door (15), and an observation window is provided on the protective door (15).

6. The hydraulic rod strength testing device according to claim 1, characterized in that: Both sides of the fixed frame (1) are fixed with support plates (16), and the bottom of the support plates (16) is fixed to the top of the fixed base box (3).

7. The hydraulic rod strength testing device according to claim 1, characterized in that: The support base (11) and the internal threaded cylinder (5) are provided with grooves on opposite sides for limiting the hydraulic rod, and the support base (11) and the internal threaded cylinder (5) are connected by fastening bolts (17) to fix and limit the hydraulic rod.

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