Stroke-adjustable load-bearing test equipment

Abstract

The utility model relates to the technical field of load-bearing testing equipment, in particular to stroke-adjustable load-bearing testing equipment, which comprises a rack, a stroke adjusting mechanism, a stroke adjusting mechanism, a stroke adjusting mechanism and a stroke adjusting mechanism, the counterweight mechanism comprises a fixing assembly, a limiting block and a counterweight assembly; the fixing assembly is fixedly connected with the top end of the rack. One end of the counterweight assembly is fixedly connected with the limiting block, and the other end of the counterweight assembly penetrates through the fixing assembly and the rack and extends into the containing space. The limiting block limits the balance weight assembly to completely penetrate through the fixing assembly. The lifting mechanism is arranged at the bottom end of the rack and provides a supporting surface for the to-be-tested product; the lifting mechanism does linear motion in the containing space and moves in the direction close to or away from the top end of the rack. The control mechanism is arranged on the rack and is used for controlling the movement of the lifting mechanism; according to the utility model, the universality of the bearing test equipment is effectively improved, the problems of low efficiency, low safety coefficient and the like are solved, and the lifting stand column bearing test equipment with adjustable stroke and high adaptability is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of load-bearing testing equipment, in particular to a load-bearing testing equipment with adjustable stroke. Background Art

[0002] In recent years, ergonomic products have garnered increasing attention, particularly in the fields of office furniture and medical equipment. As core components in these products, lifting columns, powered by electric or pneumatic actuators, enable height adjustment of desks, chairs, and other equipment to suit diverse user needs, providing a more comfortable and healthy experience and effectively alleviating fatigue associated with prolonged fixed working and learning postures. Lifting columns must not only offer high-precision lifting capabilities but also possess sufficient load-bearing capacity and stability to ensure reliability and safety during extended use.

[0003] Although the load-bearing capacity has been taken into consideration during the design and manufacturing process of lifting columns, there are still some shortcomings in the existing load-bearing testing methods. Today's load-bearing testing equipment has poor versatility and is prone to causing problems such as low efficiency, trouble, and low safety factors. As the core component of lifting products, the quality of lifting columns is self-evidently important to the product, and corresponding load-bearing tests are very necessary.

[0004] Therefore, the purpose of the present invention is to solve the problems in the prior art and provide a lifting column load-bearing testing device that is safe, efficient and highly adaptable. Summary of the Invention

[0005] The utility model provides a load-bearing test device with adjustable stroke, thereby effectively solving the problems of poor versatility, low safety factor and low efficiency in load-bearing testing of lifting columns in ergonomic products.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A stroke-adjustable load-bearing testing device, comprising:

[0008] The rack is placed on the ground and has a storage space inside;

[0009] The counterweight mechanism includes a fixed assembly, a limit block, and a counterweight assembly; the fixed assembly is fixedly connected to the top of the frame; one end of the counterweight assembly is fixedly connected to the limit block, and the other end of the counterweight assembly passes through the fixed assembly and the frame and extends into the accommodation space; the limit block restricts the counterweight assembly from completely passing through the fixed assembly;

[0010] The lifting mechanism is arranged at the bottom of the frame and provides a support surface for the product to be tested. The lifting mechanism moves linearly within the accommodation space, moving toward or away from the top of the frame.

[0011] The control mechanism is arranged on the frame and controls the movement of the lifting mechanism.

[0012] Furthermore, the fixing assembly includes a fixing plate and a bearing seat; the fixing plate is arranged at the top of the frame and fixedly connected; the bearing seat is fixedly installed on the fixing plate, and the bearing hole of the bearing seat is vertically oriented, and the counterweight assembly slides in the bearing hole.

[0013] Furthermore, the counterweight assembly includes a counterweight rod and a counterweight block; the counterweight rod passes through the bearing hole and extends vertically into the accommodating space; the counterweight block is threadedly connected to the lower end of the counterweight rod.

[0014] Furthermore, the limit block is fixedly connected to the upper end of the counterweight rod, and the limit block restricts the upper end of the counterweight rod from passing through the bearing hole.

[0015] Furthermore, the counterweight block is divided into an upper counterweight block and a lower counterweight block; the upper counterweight block passes through the lower end of the counterweight rod and is fixed by threaded connection between the lower counterweight block and the lower end of the counterweight rod.

[0016] Furthermore, the frame includes horizontal beams, longitudinal beams and vertical beams; the horizontal beams, longitudinal beams and vertical beams are fixedly connected to each other at 90 degrees to form a rectangular parallelepiped frame.

[0017] Furthermore, the frame includes a support assembly, which is fixedly connected to the lower end of the vertical beam.

[0018] Furthermore, the lifting mechanism includes a lifting assembly and a platform plate; the lifting assembly includes an elevator and a base plate, the base plate is fixedly connected to the bottom end of the frame, the elevator is arranged on the base plate, and the platform plate is fixedly connected to the elevator; the lifting assembly drives the platform plate to perform linear motion in the accommodating space toward or away from the top end of the frame.

[0019] Furthermore, the control mechanism includes a control box and a button box, which are arranged on one side of the frame.

[0020] The technical solution of this utility model can achieve the following technical effects:

[0021] The stroke-adjustable load-bearing test equipment in the utility model adapts to lifting columns of different lengths by adjusting the stroke, thereby improving the versatility of the load-bearing test of the lifting columns; an adjustable and detachable counterweight assembly is used to select different counterweights for different lifting columns, thereby better testing their load-bearing capacity; and the counterweight assembly is pushed upward by the lifting column under test, avoiding the situation where the lifting column flies out of the equipment due to excessive force, thereby improving the safety of the load-bearing test. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the structure of the stroke-adjustable load-bearing test equipment in this application;

[0024] Figure 2 Schematic cross-section of the weight-bearing mechanism in the stroke-adjustable load-bearing testing equipment in this application;

[0025] Figure 3 This is a structural diagram of the lifting mechanism in the stroke-adjustable load-bearing testing equipment in this application;

[0026] Figure 4 This is a schematic diagram of the structure of the frame of the stroke-adjustable load-bearing test equipment in this application;

[0027] Figure 5 This is a structural diagram of the control mechanism in the stroke-adjustable load-bearing testing equipment in this application.

[0028] Figure markings: 1. Frame; 11. Crossbeam; 12. Longitudinal beam; 13. Vertical beam; 14. Support assembly; 2. Counterweight mechanism; 21. Fixing assembly; 21a. Fixing plate; 21b. Bearing seat; 22. Limiting block; 23. Counterweight assembly; 23a. Counterweight rod; 23b. Counterweight block; 23b1. Upper counterweight block; 23b2. Lower counterweight block; 3. Lifting mechanism; 31. Lifting assembly; 31a. Elevator; 32b. Base plate; 32. Platform plate; 4. Control mechanism; 41. Control box; 42. Button box. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] like Figures 1 to 5As shown, a stroke-adjustable load-bearing testing device comprises:

[0032] The rack 1 is placed on the ground and has a storage space inside;

[0033] The counterweight mechanism 2 includes a fixed assembly 21, a limit block 22, and a counterweight assembly 23; the fixed assembly 21 is fixedly connected to the top of the frame 1; one end of the counterweight assembly 23 is fixedly connected to the limit block 22, and the other end of the counterweight assembly 23 passes through the fixed assembly 21 and the frame 1 and extends into the accommodation space; the limit block 22 restricts the counterweight assembly 23 from completely passing through the fixed assembly 21;

[0034] The final effect is that the counterweight assembly 23 passes through the through holes pre-drilled on the frame 1 and the fixing assembly 21. Due to its own weight, most of it is in the accommodation space, and a small part is stuck by the limit block 22 and is above the frame 1, and will not fall completely into the accommodation space due to its own weight; however, the counterweight assembly 23 can rely on external force to move upward along the through hole from bottom to top;

[0035] The lifting mechanism 3 is provided at the bottom of the frame 1 and provides a support surface for the product to be tested. The lifting mechanism 3 moves linearly within the accommodation space, moving toward or away from the top of the frame 1. When testing is required, the product to be tested is placed on the support surface of the lifting mechanism 3. As the product is lifted, it contacts the counterweight mechanism 2 and, when it moves upward again, it bears the weight. The specific load-bearing weight can be adjusted by adjusting the counterweight assembly 23 according to the product to be tested.

[0036] The control mechanism 4 is provided on the frame 1 and controls the movement of the lifting mechanism 3 .

[0037] like Figure 2 As shown, in some embodiments of the present application, the fixing assembly 21 includes a fixing plate 21a and a bearing seat 21b; the fixing plate 21a is arranged at the top of the frame 1 and is fixedly connected to the frame 1; the bearing seat 21b is fixedly installed on the fixing plate 21a, and the bearing hole of the bearing seat 21b is vertically oriented, the bearing hole passes through the bearing seat 21b, and the counterweight assembly slides in the bearing hole, so that the counterweight assembly 23 can enter the accommodating space through the bearing hole, and the design of the bearing hole can reduce the friction between the counterweight assembly 23 and the counterweight assembly 23, and also plays a guiding role, so that the counterweight assembly 23 always remains vertical.

[0038] Preferably, the counterweight assembly 23 includes a counterweight rod 23a and a counterweight block 23b; the counterweight rod 23a passes through the bearing hole and extends vertically into the accommodating space; the counterweight block 23b is threadedly connected to the lower end of the counterweight rod 23a, which is convenient for replacing counterweight blocks 23b of different weights and can also be well fixed so that the counterweight block 23b will not fall off.

[0039] The limit block 22 is fixedly connected to the upper end of the counterweight rod 23a, and the limit block 22 limits the upper end of the counterweight rod 23a from passing through the bearing hole; the limit block 22 can be combined with a nut. After the counterweight rod 23a passes through the fixed plate 21a, the limit block 22 is sleeved on the upper end of the counterweight rod 23a, and then the counterweight rod 23a is screwed to the nut. The limit block 22 will fall on the bearing seat 21b due to its own weight, and the limit block 22 is designed to a size that will not pass through the bearing hole. In this way, although the limit block 22 is not fixed, it also achieves the effect of limiting the upper end of the counterweight rod 23a from passing through the bearing hole.

[0040] Please refer to Figure 2 Preferably, the counterweight 23b is divided into an upper counterweight 23b1 and a lower counterweight 23b2; the upper counterweight 23b1 passes through the lower end of the counterweight rod 23a and is fixed to the lower end of the counterweight rod 23a through a threaded connection with the lower end of the counterweight rod 23a by the lower counterweight 23b2; the multi-level counterweight 23b makes the controllable counterweight weight according to the product to be tested more refined, and only by disassembling the lower counterweight 23b2 can the upper counterweight 23b1, the upper counterweight 23b1 and the upper counterweight 23b1 be easily taken out, replaced and added, thereby changing the overall weight of the counterweight 23b, making the entire operation process more convenient and quick.

[0041] like Figure 4 As shown, the frame 1 includes a crossbeam 11, a longitudinal beam 12 and a vertical beam 13; the crossbeam 11, the longitudinal beam 12 and the vertical beam 13 are fixedly connected to each other at 90 degrees to form a rectangular frame; the crossbeams 11 are preferably arranged in three layers of upper, middle and lower parallel front and back, with a total of six beams, and a total of four vertical beams 13 are arranged on both sides of the crossbeam 11, and the vertical beams 13 are connected by the longitudinal beams 12; all can be fixed and installed with screws, and the installation process is simple and the tools are very common.

[0042] In some embodiments of the present application, the rack 1 includes a support assembly 14, which is fixedly connected to the lower end of the vertical beam 13. The support assembly 14 is mainly used to enhance the stability of the rack 1 to ensure that the equipment can stand firmly on the ground during the test, prevent tilting or overturning due to external force or its own weight, and has a certain function of leveling the rack 1; the support assembly 14 can choose universal wheels that are easy to move the equipment, or adjustable foot pads suitable for uneven or uneven hardness ground, or fixed supports made of sturdy metal materials, or rubber pads that have shock-absorbing and anti-slip effects; using different support assemblies 14 according to the actual location can better assist in load-bearing testing. The application shows the use of fixed foot supports for support.

[0043] like Figure 3As shown, preferably, the lifting mechanism 3 includes a lifting assembly 31 and a platform plate 32; the lifting assembly 31 includes an elevator 31a and a base plate 32b, the base plate 32b is fixedly connected to the bottom end of the frame 1, the elevator 31a is set on the base plate 32b, the platform plate 32 and the elevator 31a are fixedly connected to the bottom end of the frame 1, and the platform plate 32 is fixedly connected to the lifting assembly 31; the base plate 32b is fixed above the longitudinal beam 12 and the cross beam 11 at the bottom of the frame 1, and the control mechanism 4 controls the start and stop of the elevator 31a, driving the platform plate 32 to make a linear motion toward or away from the top end of the frame 1;

[0044] The elevator 31a can adopt a worm gear servo elevator, a hydraulic lifting system, a chain elevator, etc. In this application, a worm gear servo elevator is used as an example; two platform plates 32 are placed parallel to each other on the flange platform on the upper part of the elevator 31a and fixed.

[0045] like Figure 5 As shown, the control mechanism 4 includes a control box 41 and a button box 42, which are arranged on one side of the frame 1; the control box 41 is preferably a touch screen control box 41, which is placed on one side of the frame 1 and centered in the vertical direction; two button boxes 42 can be set on both sides of the control box 41; through the dual control of the control box 41 and the button box 42, the safety of the load-bearing test is guaranteed, and in case of an emergency, the test can be stopped in time to increase the fault tolerance rate.

[0046] When a load-bearing test is required, a suitable counterweight 23b is selected and installed on the counterweight rod 23a. The product to be tested is placed on the platform plate 32. The control mechanism 4 controls the elevator 31a to start, causing the platform plate 32 to rise and drive the product to be tested closer to the counterweight 23b until the distance between the platform plate 32 and the counterweight 23b is adjusted so that the product to be tested is against the counterweight 23b. The elevator assembly 31 then continues to rise, thereby driving the counterweight rod 23a to move upward along the bearing hole.

[0047] To judge the load-bearing effect, a displacement sensor or a laser rangefinder can be installed to measure the deformation degree of the product to be tested, i.e., the lifting column, when pushing the counterweight block 23b to move, to express the result of the load-bearing test; a load sensor can also be used to record the load value when the product to be tested undergoes obvious deformation; or testing methods such as visual inspection can be used.

[0048] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A load-bearing test device with adjustable stroke, characterized in that: include: The rack is placed on the ground and has a storage space inside; The counterweight mechanism includes a fixing assembly, a limit block, and a counterweight assembly; The fixing assembly is fixedly connected to the top of the frame; one end of the counterweight assembly is fixedly connected to the limit block, and the other end of the counterweight assembly passes through the fixing assembly and the frame and extends into the accommodation space; the limit block restricts the counterweight assembly from completely passing through the fixing assembly; A lifting mechanism is provided at the bottom of the frame to provide a support surface for the product to be tested; the lifting mechanism moves linearly within the accommodation space, moving toward or away from the top of the frame; The control mechanism is arranged on the frame and controls the movement of the lifting mechanism.

2. The stroke-adjustable load-bearing testing equipment according to claim 1, characterized in that: The fixing assembly includes a fixing plate and a bearing seat; the fixing plate is arranged at the top of the frame and fixedly connected; the bearing seat is fixedly installed on the fixing plate, and the bearing hole of the bearing seat is vertically oriented, and the counterweight assembly slides in the bearing hole.

3. The stroke-adjustable load-bearing test equipment according to claim 2, characterized in that: The counterweight assembly includes a counterweight rod and a counterweight block; the counterweight rod passes through the bearing hole and vertically extends into the accommodating space; the counterweight block is threadedly connected to the lower end of the counterweight rod.

4. The stroke-adjustable load-bearing test equipment according to claim 3, characterized in that: The limit block is fixedly connected to the upper end of the counterweight rod, and the limit block limits the upper end of the counterweight rod from passing through the bearing hole.

5. The stroke-adjustable load-bearing testing device according to claim 3, characterized in that: The counterweight block is divided into an upper counterweight block and a lower counterweight block; the upper counterweight block passes through the lower end of the counterweight rod and is fixed by being threadedly connected to the lower end of the counterweight rod.

6. The stroke-adjustable load-bearing testing device according to claim 1, characterized in that: The frame includes a crossbeam, a longitudinal beam and a vertical beam; the crossbeam, the longitudinal beam and the vertical beam are fixedly connected to each other at 90 degrees to form a rectangular parallelepiped frame.

7. The stroke-adjustable load-bearing testing device according to claim 6, characterized in that: The frame includes a support assembly, and the support assembly is fixedly connected to the lower end of the vertical beam.

8. The stroke-adjustable load-bearing testing device according to claim 1, characterized in that: The lifting mechanism includes a lifting assembly and a platform plate; the lifting assembly includes an elevator and a base plate, the base plate is fixedly connected to the bottom end of the frame, the elevator is arranged on the base plate, and the platform plate is fixedly connected to the elevator; the lifting assembly drives the platform plate to perform linear motion in the direction of approaching or moving away from the top end of the frame within the accommodating space.

9. The stroke-adjustable load-bearing testing device according to claim 1, characterized in that: The control mechanism comprises a control box and a button box, which are arranged on one side of the frame.

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