Bolt compression resistance detection equipment

Abstract

The invention relates to bolt compression resistance detection equipment applied to the field of physical analysis, adaptive positioning operation can be performed on bolts with different diameters by arranging a limiting unit with a plurality of groups of limiting rods, synchronous batch detection on a plurality of bolts with different diameters is realized through cooperation of a pressing plate, a main compression unit and the limiting unit, and the detection efficiency is improved. The detection efficiency and the application range are effectively improved, in addition, through the arrangement of the auxiliary compression unit and the upper and lower limiting units, bolts with different lengths can be installed on the upper and lower limiting units during use, the bolts with different lengths can be synchronously extruded by the pressing plate through the cooperation of the auxiliary compression unit, and the detection accuracy is improved. Therefore, synchronous batch detection of bolts with different screw lengths is realized, the detection efficiency is further improved, the application range is further expanded, and the device has great economic and use benefits.

Description

Technical Field

[0001] The present invention relates to a detection device, in particular to a bolt compression performance detection device applied in the field of physical analysis. Background Art

[0002] A type of fastener consisting of a head and a screw (a cylinder with external threads), which needs to be matched with a nut. Generally, bolts have hexagonal heads, round heads, square heads, countersunk heads and other specifications. After production, bolts need to undergo multiple tests such as compression resistance, tensile strength, and hardness to meet usage requirements.

[0003] For example, the specification of Chinese patent CN111929173B discloses a bolt strength detection device, which uses two electric hydraulic push rods to push a push block to obtain pressure drive, and a corresponding slotted clamp is embedded on the push block to facilitate the head of the bolt to be clamped in the slot for better restriction. The other end is against the pressure sensor transmission part on the abutment block. When pushing, the pressure value borne by the bolt can be obtained in real time, and the pressure value data is recorded after the bolt bends. In order to prevent the bolt from flying out under force, a transparent protective cover is also provided, which not only protects the inspection personnel but also facilitates the observation of the status of the bolt. In addition, a clamping device is provided to clamp and fix the bolt, which is used to cooperate with the torque testing device to perform torque testing on the bolt, thereby improving the diversified testing function of the detection device and greatly improving the efficiency of the bolt detection work.

[0004] The specification of Chinese patent CN220136847U discloses a screw strength testing device for screw production. When the second clamping part moves to the bottom of the lifting and pressing assembly, the adjusting assembly drives the lifting and pressing assembly to sink downward, and the clamping assembly at the bottom of the lifting and pressing assembly drives the screw to move toward the second clamping part, thereby hammering the screw into the detection plate. By observing the process of the screw embedding into the detection plate, it is possible to detect whether the screw is broken or deformed during the downward pressing process.

[0005] However, the existing devices for bolt compression testing have great limitations in use. They are all for testing single bolts, and it is difficult to perform batch testing on bolts, and it is also difficult to perform synchronous batch testing on bolts of different sizes with different lengths and diameters at the same time. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that it is difficult for the existing compression resistance testing device for bolts to simultaneously perform batch testing on bolts of various sizes with different lengths and diameters.

[0007] In order to solve the above problems, the present invention provides a bolt compression performance testing device, comprising a base, a top plate is provided on the upper side of the base, a pair of vertical plates are fixedly connected between the base and the top plate, a pressure plate is provided on the lower side of the top plate, a pair of electric telescopic rods are fixedly connected between the top plate and the pressure plate, a limit unit is provided on the lower side of the pressure plate, a main pressure unit is provided between the limit unit and the base, the main pressure unit comprises a main board body, a plurality of circular grooves are opened on the upper end of the main board body, a circular plate is slidably connected inside the circular groove, and a main compression spring is fixedly connected between the circular plate and the inner bottom surface of the circular groove;

[0008] The limit unit includes a rectangular frame, on which are arranged a plurality of groups of limit rods, each group of limit rods being a pair, a pair of side ends of the rectangular frame being provided with a plurality of long sliding holes, the plurality of groups of limit rods being slidably connected to the inside of the plurality of long sliding holes, and both ends of the limit rods passing through the long sliding holes and extending to the outside, a pair of limit columns being fixedly connected to the outer ends of the limit rods, the ends of the pair of limit columns being away from each other being respectively fitted with a pair of inner walls of the rectangular frame, a pair of small nuts being threadedly connected to the outer ends of the limit rods, and the pair of small nuts being respectively located on both sides of the rectangular frame.

[0009] As a further supplement to the present application, both ends of the rectangular frame where no long sliding holes are provided are fixedly connected to side panels, and one end of the side panel away from the rectangular frame is fixedly connected to a side rod.

[0010] As a further supplement to the present application, a pair of side ends of the main board body are fixedly connected with a slide plate, and one end of the slide plate away from the main board body is fixedly connected with a slide rod.

[0011] As a further supplement to the present application, an inner slide groove is provided on one end of a pair of vertical plates that are close to each other, and an outer slide groove is provided on the inner walls of a pair of inner slide grooves that are away from each other. The slide plate and the side plates are slidably connected to the inside of the inner slide groove, and the slide rod and the side rod pass through the outer slide groove and are slidably connected to the inside thereof.

[0012] As another improvement of the present application, a pad is fixedly connected to the upper end of the base, and a secondary pressure unit is used instead of the main pressure unit, and a limiting unit is also provided between the secondary pressure unit and the pad.

[0013] As another improved supplement of the present application, the auxiliary pressure unit includes a auxiliary plate body, the internal sliding connection of the auxiliary plate body is provided with a pressure component, the outer end of the pressure component is fixedly connected with a pair of sliders, and the inner wall of the auxiliary plate body is provided with a pair of vertical grooves which are slidably connected with the sliders.

[0014] As another improved supplement of the present application, the pressure component includes a lower plate, an upper plate and a secondary compression spring, the secondary compression spring is fixedly connected between the lower plate and the upper plate, and the slider is fixedly connected to the outer end of the lower plate.

[0015] As another improved supplement of the present application, a pair of side ends of the auxiliary plate body are also provided with a slide plate and a slide rod.

[0016] In summary, the present application can realize adaptive positioning operations on bolts of different diameters by setting a limit unit with multiple groups of limit rods, and realize synchronous batch detection of multiple bolts of different diameters through the cooperation of the pressure plate, the main pressure unit and the limit unit, thereby effectively improving the detection efficiency and scope of application, and by setting a secondary pressure unit and an upper and lower pair of limit units, when in use, bolts of different lengths can be installed on the upper and lower pair of limit units, and through the cooperation of the secondary pressure unit, the bolts of different lengths can be synchronously squeezed by the pressure plate, thereby realizing synchronous batch detection of bolts with different screw lengths, further improving the detection efficiency and scope of application, and having greater economic and use benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of the first embodiment of the present application;

[0018] Figure 2 The three-dimensional space of the limiting unit of the first and second embodiments of the present application Figure 1 ;

[0019] Figure 3 The three-dimensional space of the limiting unit of the first and second embodiments of the present application Figure 2 ;

[0020] Figure 4 A three-dimensional diagram of the main pressure-bearing unit of the first and second embodiments of the present application;

[0021] Figure 5 This is a schematic diagram of the front structure of the first embodiment of the present application during testing;

[0022] Figure 6 The third embodiment of the present application is Figure 1 ;

[0023] Figure 7 The third embodiment of the present application is Figure 2 ;

[0024] Figure 8 This is a schematic diagram of the front structure of the second embodiment of the present application when installing the bolts Figure 1 ;

[0025] Fig. 9 This is a schematic diagram of the front structure of the second embodiment of the present application when installing the bolts Figure 2 ;

[0026] Fig.10 This is a schematic diagram of the front structure of the second embodiment of the present application when installing the bolts Figure 3 ;

[0027] Fig.11This is a schematic diagram of the front structure of the second embodiment of the present application during testing;

[0028] Fig.12 This is a schematic diagram of the front structure of the pressure-bearing component of the second embodiment of the present application.

[0029] Description of the numbers in the figure:

[0030] 1 base, 2 vertical plate, 201 inner slide, 202 outer slide, 3 top plate, 4 electric telescopic rod, 5 pressure plate, 6 main pressure unit, 61 main plate body, 6101 round groove, 62 round plate, 63 slide plate, 64 slide bar, 65 main compression spring, 7 limit unit, 71 rectangular frame, 7101 long slide hole, 72 limit rod, 73 limit column, 74 small nut, 75 side plate, 76 side rod, 8 pad, 9 secondary pressure unit, 91 secondary plate body, 9101 vertical groove, 92 pressure assembly, 9201 lower plate, 9202 upper plate, 9203 secondary compression spring, 93 slider. DETAILED DESCRIPTION

[0031] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0032] The first implementation method:

[0033] The present invention provides a bolt compression performance testing device, please refer to Figure 1 , including a base 1, a top plate 3 is provided on the upper side of the base 1, a pair of vertical plates 2 are fixedly connected between the base 1 and the top plate 3, a pressing plate 5 is provided on the lower side of the top plate 3, a pair of electric telescopic rods 4 are fixedly connected between the top plate 3 and the pressing plate 5, a limiting unit 7 is provided on the lower side of the pressing plate 5, a main pressure unit 6 is provided between the limiting unit 7 and the base 1, and in this embodiment, the main pressure unit 6 is placed at the upper end of the base 1.

[0034] See also Figure 2 and Figure 3 The limiting unit 7 includes a rectangular frame 71, on which a plurality of groups of limiting rods 72 are arranged, each group of limiting rods 72 is a pair, a pair of side ends of the rectangular frame 71 are provided with a plurality of long sliding holes 7101, the plurality of groups of limiting rods 72 are respectively slidably connected to the interior of the plurality of long sliding holes 7101, and both ends of the limiting rods 72 pass through the long sliding holes 7101 and extend to the outside, a pair of limiting columns 73 are fixedly connected to the outer ends of the limiting rods 72, and the ends of the pair of limiting columns 73 that are away from each other are respectively fitted with a pair of inner walls of the rectangular frame 71, and a pair of small nuts 74 are threadedly connected to the outer ends of the limiting rods 72, and the pair of small nuts 74 are respectively located on both sides of the rectangular frame 71.

[0035] See also Figure 4 and Figure 5The main pressure unit 6 includes a main board body 61, and a plurality of circular grooves 6101 are opened at the upper end of the main board body 61. A circular plate 62 is slidably connected inside the circular groove 6101, and a main compression spring 65 is fixedly connected between the circular plate 62 and the inner bottom surface of the circular groove 6101.

[0036] The specific method of installing the bolt using the limit unit 7 is as follows: before installation, remove the small nut 74 to make a group of limit rods 72 in a movable state in the long sliding hole 7101, so that the distance between a group of limit rods 72 can be adjusted according to the diameter of the screw and the head on the bolt. Suppose the screw diameter is a, the head diameter is b, b>a, at this time, the distance between a group of limit rods 72 is adjusted to c, satisfying b>c>a, so that the bolt can be conveniently placed between a group of limit rods 72 with the screw facing downward, and its head is limited by a pair of limit rods 72, so that the bolt is in a suspended state, and multiple bolts of the same type can be placed between a group of limit rods 72. Note that the placement position of the bolt must match the position of the circular plate 62 (that is, the bolt is located on the upper side of the circular plate 62). After placement is completed, the pair of limit rods 72 are brought close to each other to clamp the screw, and then the small nut 74 is used to fix the position of the limit rod 72, thereby effectively limiting the bolt;

[0037] And, combined with Figure 2 and Figure 5 As shown, since the spacing between a group of stopper rods 72 is adjustable, different groups of stopper rods 72 can be used to fix bolts with different diameters and the same length (such as Figure 2 and Figure 5 The fixing method of bolts with different diameters is the same as above;

[0038] When all the bolts are fixed, the limit unit 7 with the bolts is moved downward so that the multiple bolts are respectively inserted into the multiple circular grooves 6101 and contact the circular plate 62. Then the electric telescopic rod 4 is started to drive the pressure plate 5 to move downward to squeeze the multiple bolts, thereby realizing batch testing of bolts of multiple different diameters. It has the characteristics of high applicability and high testing efficiency. During the testing process, the main compression spring 65 is elastically compressed to push the circular plate 62 to elastically support the bolt. When a bolt is bent and deformed during testing, it indicates that the compression resistance of the bolt is unqualified.

[0039] Combination Figure 1 and Figure 2 The two ends of the rectangular frame 71 without the long sliding hole 7101 are fixedly connected to the side plates 75, and the end of the side plate 75 away from the rectangular frame 71 is fixedly connected to the side rod 76. Figure 4 and Figure 5 A pair of side ends of the main board body 61 are fixedly connected to a slide plate 63, and one end of the slide plate 63 away from the main board body 61 is fixedly connected to a slide rod 64, see Figure 1 An inner groove 201 is provided at one end of a pair of vertical plates 2 that are close to each other, and an outer groove 202 is provided on the inner walls of the pair of inner grooves 201 that are away from each other. The slide plate 63 and the side plate 75 are slidably connected to the inside of the inner groove 201, and the slide rod 64 and the side rod 76 pass through the outer groove 202 and are slidably connected to the inside thereof. Through the above structure, a stable sliding connection between the main pressure unit 6 and the limit unit 7 and the vertical plate 2 is achieved, which facilitates the installation and removal of the bolts.

[0040] Second implementation method:

[0041] This implementation is based on the first implementation, and the following settings are made: Figure 6 and Figure 7 A pad 8 is fixedly connected to the upper end of the base 1 , and an auxiliary pressure unit 9 is used to replace the main pressure unit 6 . A limiting unit 7 is also provided between the auxiliary pressure unit 9 and the pad 8 .

[0042] Combination Figure 8 and Fig. 9 As shown, the auxiliary pressure unit 9 includes an auxiliary plate body 91, the interior of the auxiliary plate body 91 is slidably connected to a pressure component 92, the outer end of the pressure component 92 is fixedly connected to a pair of sliders 93, and the inner wall of the auxiliary plate body 91 is provided with a pair of vertical grooves 9101 slidably connected to the sliders 93, see Fig.12 The pressure component 92 includes a lower plate 9201, an upper plate 9202 and a secondary compression spring 9203, the secondary compression spring 9203 is fixedly connected between the lower plate 9201 and the upper plate 9202, the slider 93 is fixedly connected to the outer end of the lower plate 9201, and a pair of side ends of the secondary plate body 91 are also provided with a slide plate 63 and a slide rod 64.

[0043] Through the arrangement of the above structure, this embodiment adds the function of synchronously detecting two bolts with different screw rod lengths (there is no obvious restriction on the bolt diameters, which can be the same or different) on the basis of the first embodiment. The specific operation method is as follows:

[0044] Step 1, such as Figure 6 and Figure 8As shown, select the bolt M and bolt G to be tested (the two have different screw rod lengths, the same head length, and the diameters may be the same or different), first install the two on the lower limiting unit 7, and the installation method is as follows: move the main pressure unit 6 and the upper limiting unit 7 upward, and use a large nut to fix the sliding rod 64 at the side end of the auxiliary plate body 91 on the vertical plate 2, so as to reserve sufficient installation space for the lower limiting unit 7, remove the small nut 74 on the lower limiting unit 7, and expand a group of limiting rods 72 to each other so that the distance between the two is greater than the head diameter of the bolt, and then place the bolt with the head facing down on the upper end of the pad 8, and then move the lower limiting unit 7 downward until the limiting rod 72 is pressed on the upper end of the bolt head, and then bring a group of limiting rods 72 closer to each other, clamp the screw, and fix the position of the limiting rod 72 by the small nut 74 (Note: a group of limiting rods 72 are installed with bolts of the same type, and multiple bolts are aligned with multiple vertical slots 9101 respectively);

[0045] Step 2: Fig. 9 As shown, remove the large nut at the outer end of the slide rod 64, move the secondary pressure unit 9 downward, so that the screw rod of the bolt enters the inner side of the secondary plate body 91 and contacts the pressure component 92, until the secondary pressure unit 9 cannot move. At this time, due to the different lengths of the two bolts, the slider 93 on the pressure component 92 contacting the longer bolt M will slide to the upper inner wall position of the vertical groove 9101, and the pressure component 92 contacting the shorter bolt G is lower than the pressure component 92 contacting the longer bolt M.

[0046] Step 3: Fig.10 As shown, the same installation method 1 as the first embodiment is adopted, and bolts M and bolts G are installed on the upper limiting unit 7. The installation requirements are: the upper and lower sides of the same pressure component 92 are bolts M and bolts G respectively. In this way, after the bolts on the upper limiting unit 7 are installed, they are moved downward, and the bolts M and bolts G enter the inner side of the auxiliary plate body 91 and just contact with the corresponding pressure component 92 (such as Fig.11 );

[0047] Step 4, start the electric telescopic rod 4, drive the pressure plate 5 to move downward, and squeeze the upper and lower layers of bolts synchronously. At this time, the lower end of the pressure plate 5 contacts the heads of the bolts M and G of the upper layer, and the upper end of the pad 8 contacts the heads of the bolts M and G of the lower layer, so as to realize synchronous batch detection of two types of bolts with different screw lengths (the principle is: the distance between the pressure plate 5 and the pad 8 is the sum of the lengths of the bolts M, the bolts G and the pressure component 92).

[0048] When the pressure plate 5 squeezes the bolts, the upper plate 9202 and the lower plate 9201 will approach each other, squeezing the secondary compression spring 9203. The elastic potential energy of the secondary compression spring 9203 acts in reverse on the upper and lower layers of the bolts to realize the compression resistance detection process. When a bolt M or a bolt G is bent and deformed, it indicates that the compression resistance performance of the bolt is unqualified.

[0049] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A bolt compression performance testing device, comprising a base (1), a top plate (3) is provided on the upper side of the base (1), a pair of vertical plates (2) are fixedly connected between the base (1) and the top plate (3), a pressing plate (5) is provided on the lower side of the top plate (3), and a pair of electric telescopic rods (4) are fixedly connected between the top plate (3) and the pressing plate (5), characterized in that: A limit unit (7) is provided on the lower side of the pressure plate (5), a main pressure unit (6) is provided between the limit unit (7) and the base (1), the main pressure unit (6) comprises a main plate body (61), a plurality of circular grooves (6101) are provided at the upper end of the main plate body (61), a circular plate (62) is slidably connected inside the circular groove (6101), and a main compression spring (65) is fixedly connected between the circular plate (62) and the inner bottom surface of the circular groove (6101); The limiting unit (7) comprises a rectangular frame (71), on which a plurality of groups of limiting rods (72) are arranged, each group of the limiting rods (72) comprising a pair, a pair of side ends of the rectangular frame (71) are provided with a plurality of long sliding holes (7101), the plurality of groups of limiting rods (72) are respectively slidably connected to the interior of the plurality of long sliding holes (7101), and both ends of the limiting rods (72) pass through the long sliding holes (7101) and extend to the outside, the outer ends of the limiting rods (72) are fixedly connected to a pair of limiting columns (73), the ends of the pair of limiting columns (73) being away from each other are respectively fitted to a pair of inner walls of the rectangular frame (71), and the outer ends of the limiting rods (72) are threadedly connected to a pair of small nuts (74), and the pair of small nuts (74) are respectively located on both sides of the rectangular frame (71).

2. A bolt compression performance testing device according to claim 1, characterized in that: Both ends of the rectangular frame (71) not provided with the long sliding hole (7101) are fixedly connected to side plates (75), and one end of the side plate (75) away from the rectangular frame (71) is fixedly connected to a side rod (76).

3. A bolt compression performance testing device according to claim 2, characterized in that: A pair of side ends of the main board body (61) are both fixedly connected to a slide plate (63), and one end of the slide plate (63) away from the main board body (61) is fixedly connected to a slide rod (64).

4. The bolt compression performance testing device according to claim 3 is characterized in that: An inner slide groove (201) is provided at one end of the pair of vertical plates (2) that is close to each other, and an outer slide groove (202) is provided on the inner wall of the pair of inner slide grooves (201) that is away from each other. The slide plate (63) and the side plate (75) are slidably connected to the inside of the inner slide groove (201), and the slide rod (64) and the side rod (76) pass through the outer slide groove (202) and are slidably connected to the inside thereof.

5. The bolt compression performance testing device according to claim 3 is characterized in that: A pad (8) is fixedly connected to the upper end of the base (1), and a secondary pressure unit (9) is used to replace the main pressure unit (6). A limit unit (7) is also provided between the secondary pressure unit (9) and the pad (8).

6. The bolt compression performance testing device according to claim 5 is characterized in that: The auxiliary pressure-bearing unit (9) comprises an auxiliary plate body (91), the interior of the auxiliary plate body (91) being slidably connected to a pressure-bearing component (92), the outer ends of the pressure-bearing component (92) being fixedly connected to a pair of sliding blocks (93), and the inner wall of the auxiliary plate body (91) being provided with a pair of vertical grooves (9101) slidably connected to the sliding blocks (93).

7. The bolt compression performance testing device according to claim 6 is characterized in that: The pressure-bearing component (92) comprises a lower plate (9201), an upper plate (9202) and a secondary compression spring (9203); the secondary compression spring (9203) is fixedly connected between the lower plate (9201) and the upper plate (9202); and the slider (93) is fixedly connected to the outer end of the lower plate (9201).

8. The bolt compression performance testing device according to claim 6 is characterized in that: A pair of side ends of the auxiliary plate body (91) are also provided with a slide plate (63) and a slide rod (64).

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