Quick adjustment and locking device for the crosshead of a testing machine

Abstract

This utility model belongs to the technical field of crossbeams for testing machines, specifically relating to a quick adjustment and locking device for a crossbeam of a testing machine. It includes a base, a slider slidably connected inside the base, and a threaded rod rotatably connected inside the base. The threaded rod and the slider are connected by a thread, and a knob is fixedly connected to the upper end of the threaded rod, contacting the base. A connecting seat is fixedly connected to the side of the slider away from the base, and a support rod is fixedly connected to the side of the connecting seat away from the base. A crossbeam is slidably sleeved on the outer side of the support rod. This utility model, by incorporating a limit frame, a locking block, and a spring, allows the limit frame to move after the crossbeam has been adjusted. The spring force moves the limit frame, causing the limit frame to engage the locking block, which then limits the knob, thus locking the crossbeam after adjustment. This solves the problem of inconvenient locking of the crossbeam after adjustment.

Description

Technical Field

[0001] This utility model relates to the field of crossbeam technology for testing machines, specifically a quick adjustment and locking device for the crossbeam of a testing machine. Background Technology

[0002] The crossbeam of the testing machine is a core moving component, undertaking a crucial displacement-bearing task in material testing experiments. Through its cooperation with the machine frame, the crossbeam provides a precise loading path for the specimen, playing a key role in the testing of material mechanical properties. During the experiment, the position of the crossbeam determines the point and manner of load application on the specimen, directly affecting the accuracy and repeatability of the test results. The crossbeam typically employs a high-precision guiding system to ensure smooth movement in the vertical direction, meeting the stringent displacement control requirements of various testing standards.

[0003] The position adjustment of the crossbeam is mainly accomplished by a manual screw mechanism. The operator rotates the adjusting screw to achieve precise vertical raising and lowering of the crossbeam. Although this mechanical adjustment method is simple and intuitive in structure, it reveals obvious locking inconvenience in actual use. Due to the fit clearance between the adjusting screw and the fixing mechanism, the operator needs to apply a large amount of additional tightening force after completing the position adjustment to achieve reliable fixing. Utility Model Content

[0004] The purpose of this invention is to provide a quick adjustment and locking device for the crossbeam of a testing machine, which solves the problem that the crossbeam of the testing machine is inconvenient to lock after adjustment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick adjustment and locking device for a testing machine crossbeam, comprising a base, a slider slidably connected inside the base, a threaded rod rotatably connected inside the base, the threaded rod and the slider being threadedly connected, a knob fixedly connected to the upper end of the threaded rod, the knob contacting the base, a connecting seat fixedly connected to the side of the slider away from the base, a support rod fixedly connected to the side of the connecting seat away from the base, a crossbeam slidably sleeved on the outer side of the support rod, a guide plate fixedly connected to the outer side of the base, the guide plate contacting the crossbeam, a limiting block rotatably connected inside the crossbeam, the limiting block being movably connected to the support rod, a protrusion fixedly connected to the outer side of the limiting block, the protrusion being slidably connected to the crossbeam, a limiting sleeve fixedly connected to the side of the limiting block away from the crossbeam, and a locking mechanism provided on the base.

[0006] Preferably, a retaining ring is fixedly connected to the outer side of the threaded rod, and the retaining ring contacts the inner wall of the base. The retaining ring is designed to limit the movement of the threaded rod.

[0007] Preferably, a guide block is fixedly connected to the side of the guide plate near the crossbeam, and the guide block is slidably connected to the crossbeam. Through the design of the guide block, the guide plate can be guided.

[0008] Preferably, the limiting sleeve contacts the connecting seat, the limiting sleeve contacts the crossbeam, and the limiting sleeve is threadedly connected to the support rod. The design of the limiting sleeve allows for adjustment of the length of the crossbeam.

[0009] Preferably, a guide frame is fixedly connected to the outer side of the base, and the guide frame is slidably connected to the connecting seat. Through the design of the guide frame, the connecting seat can be guided.

[0010] Preferably, the locking mechanism includes a limiting frame, which is slidably connected to the outer side of the base. A locking block is fixedly connected to the lower end of the limiting frame. The limiting frame contacts a knob, and the locking block is slidably connected to the knob. A fixing rod is fixedly connected inside the limiting frame, and a fixing block is fixedly connected to the outer side of the base. The fixing block is slidably connected to the limiting frame and the fixing block is slidably connected to the fixing rod. A spring is provided on the outer side of the fixing rod. Through the design of the locking mechanism, the crossbeam can remain stable after adjustment.

[0011] Preferably, one end of the spring contacts the fixed block, and the other end of the spring contacts the limiting frame. Through the design of the spring, the limiting frame can be driven to limit the knob.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, by setting up components such as a limit frame, a locking block, and a spring, allows the limit frame to move after the crossbeam is adjusted, using the spring force to move the limit frame. This causes the limit frame to drive the locking block to limit the knob, thereby locking the crossbeam after adjustment. This solves the problem of the crossbeam of the testing machine being inconvenient to lock after adjustment.

[0014] 2. This utility model is equipped with a support rod, a limiting sleeve, and a guide plate. Rotating the limiting sleeve causes it to move along the thread of the support rod, thereby driving the crossbeam to adjust its length. This design makes the crossbeam adjustment more precise and flexible, and the operation is simple. It can effectively meet the diverse requirements of different tests for the crossbeam length and improve the adaptability of the testing machine to diverse working conditions. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 For the present utility model Figure 1 A partial three-dimensional structural diagram;

[0017] Figure 3 For the present utility model Figure 1 Top sectional view of the partial structure;

[0018] Figure 4 For the present utility model Figure 3 Enlarged view of part A of the structure.

[0019] In the diagram: 1. Base; 2. Slider; 21. Threaded rod; 22. Retaining ring; 23. Knob; 3. Connecting seat; 31. Support rod; 32. Crossbeam; 33. Guide plate; 34. Guide block; 35. Limiting block; 36. Protrusion; 37. Limiting sleeve; 38. Guide frame; 4. Locking mechanism; 41. Limiting frame; 42. Locking block; 43. Fixing rod; 44. Fixing block; 45. Spring. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4 A quick-adjustment locking device for a crossbeam of a testing machine includes a base 1, a slider 2 slidably connected inside the base 1, a threaded rod 21 rotatably connected inside the base 1, the threaded rod 21 and the slider 2 being threadedly connected, a retaining ring 22 fixedly connected to the outer side of the threaded rod 21, the retaining ring 22 contacting the inner wall of the base 1, the retaining ring 22 being designed to limit the threaded rod 21, a knob 23 fixedly connected to the upper end of the threaded rod 21, the knob 23 contacting the base 1, a connecting seat 3 fixedly connected to the side of the slider 2 away from the base 1, a support rod 31 fixedly connected to the side of the connecting seat 3 away from the base 1, a crossbeam 32 slidably sleeved on the outer side of the support rod 31, and a guide plate 33 fixedly connected to the outer side of the base 1, the guide plate 33 contacting the crossbeam 32.

[0022] Please see Figure 2-4A guide block 34 is fixedly connected to the side of the guide plate 33 near the crossbeam 32. The guide block 34 is slidably connected to the crossbeam 32. The guide block 34 can guide the guide plate 33. A limit block 35 is rotatably connected inside the crossbeam 32. The limit block 35 is movably connected to the support rod 31. A protrusion 36 is fixedly connected to the outside of the limit block 35. The protrusion 36 is slidably connected to the crossbeam 32. A limit sleeve 37 is fixedly connected to the side of the limit block 35 away from the crossbeam 32. The limit sleeve 37 contacts the connecting seat 3 and the crossbeam 32. The limit sleeve 37 is threadedly connected to the support rod 31. The length of the crossbeam 32 can be adjusted by the design of the limit sleeve 37. A guide frame 38 is fixedly connected to the outside of the base 1. The guide frame 38 is slidably connected to the connecting seat 3. The guide frame 38 can guide the connecting seat 3. A locking mechanism 4 is provided on the base 1.

[0023] Please see Figure 2-4 The locking mechanism 4 includes a limiting frame 41. The limiting frame 41 is slidably connected to the outer side of the base 1. A locking block 42 is fixedly connected to the lower end of the limiting frame 41. The limiting frame 41 contacts the knob 23. The locking block 42 is slidably connected to the knob 23. A fixing rod 43 is fixedly connected inside the limiting frame 41. A fixing block 44 is fixedly connected to the outer side of the base 1. The fixing block 44 is slidably connected to the limiting frame 41. The fixing block 44 is slidably connected to the fixing rod 43. A spring 45 is provided on the outer side of the fixing rod 43. One end of the spring 45 contacts the fixing block 44, and the other end of the spring 45 contacts the limiting frame 41. Through the design of the spring 45, the limiting frame 41 can be driven to limit the knob 23. Through the design of the locking mechanism 4, the crossbeam 32 can remain stable after adjustment.

[0024] The specific implementation process of this utility model is as follows: When in use, by rotating the limiting sleeve 37, the limiting sleeve 37 and the support rod 31 will undergo threaded movement, thereby causing the limiting sleeve 37 to move on the support rod 31, and causing the limiting sleeve 37 to drive the crossbeam 32 to move, so that the length of the crossbeam 32 can be adjusted.

[0025] By moving the limiting bracket 41 away from the knob 23, the limiting bracket 41 causes the fixing rod 43 to slide within the fixing block 44, thereby pressing the spring 45 and causing the limiting bracket 41 to slide the locking block 42 out of the knob 23, thus releasing the limitation on the knob 23.

[0026] By rotating the knob 23, the knob 23 drives the threaded rod 21 to rotate, causing the threaded rod 21 to move in a threaded motion with the slider 2. This causes the slider 2 to move the connecting seat 3, which in turn moves the crossbeam 32 via the support rod 31. Thus, the height of the crossbeam 32 can be adjusted.

[0027] 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 quick-adjustment and locking device for the crossbeam of a testing machine, comprising a base (1), characterized in that: The base (1) is internally connected to a slider (2), and the base (1) is internally connected to a threaded rod (21). The threaded rod (21) and the slider (2) are connected by a thread. A knob (23) is fixedly connected to the upper end of the threaded rod (21). The knob (23) is in contact with the base (1). A connecting seat (3) is fixedly connected to the side of the slider (2) away from the base (1). A support rod (31) is fixedly connected to the side of the connecting seat (3) away from the base (1). A crossbeam is slidably sleeved on the outer side of the support rod (31). 32), a guide plate (33) is fixedly connected to the outer side of the base (1), the guide plate (33) is in contact with the crossbeam (32), a limit block (35) is rotatably connected inside the crossbeam (32), the limit block (35) is movably connected to the support rod (31), a protrusion (36) is fixedly connected to the outer side of the limit block (35), the protrusion (36) is slidably connected to the crossbeam (32), a limit sleeve (37) is fixedly connected to the side of the limit block (35) away from the crossbeam (32), and a locking mechanism (4) is provided on the base (1).

2. The quick adjustment and locking device for the crossbeam of a testing machine according to claim 1, characterized in that: A retaining ring (22) is fixedly connected to the outer side of the threaded rod (21), and the retaining ring (22) contacts the inner wall of the base (1).

3. The quick adjustment and locking device for the crossbeam of a testing machine according to claim 1, characterized in that: The guide plate (33) is fixedly connected to a guide block (34) on the side near the crossbeam (32), and the guide block (34) is slidably connected to the crossbeam (32).

4. The quick adjustment and locking device for the crossbeam of a testing machine according to claim 1, characterized in that: The limiting sleeve (37) contacts the connecting seat (3), the limiting sleeve (37) contacts the crossbeam (32), and the limiting sleeve (37) is connected to the support rod (31) by a thread.

5. The quick adjustment and locking device for the crossbeam of a testing machine according to claim 1, characterized in that: A guide frame (38) is fixedly connected to the outside of the base (1), and the guide frame (38) is slidably connected to the connecting seat (3).

6. The quick adjustment and locking device for the crossbeam of a testing machine according to claim 1, characterized in that: The locking mechanism (4) includes a limiting frame (41). The limiting frame (41) is slidably connected to the outer side of the base (1). A locking block (42) is fixedly connected to the lower end of the limiting frame (41). The limiting frame (41) is in contact with the knob (23). The locking block (42) is slidably connected to the knob (23). A fixing rod (43) is fixedly connected inside the limiting frame (41). A fixing block (44) is fixedly connected to the outer side of the base (1). The fixing block (44) is slidably connected to the limiting frame (41). The fixing block (44) is slidably connected to the fixing rod (43). A spring (45) is provided on the outer side of the fixing rod (43).

7. The quick adjustment and locking device for the crossbeam of a testing machine according to claim 6, characterized in that: One end of the spring (45) is in contact with the fixing block (44), and the other end of the spring (45) is in contact with the limiting frame (41).

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