Bolt tightening force detection device

Abstract

The utility model relates to the technical field of bolt tightening force, in particular to a bolt tightening force detection device which comprises a fixed seat, a drawer arranged in a storage groove, a fixed clamping plate arranged at the top of the left end face of the fixed seat, a second hydraulic cylinder arranged in the middle of the left end face of the fixed seat, and a first supporting block arranged at the position, corresponding to a first notch, of a first lifting plate. A pressure sensor is arranged at the bottom of the convex plate, a movable clamping plate is arranged at the top of the right end of the fixed seat, and a first hydraulic cylinder is arranged at the right end of the movable clamping plate; according to the bolt tightening force detection device, the movable clamping plate and the fixed clamping plate are both provided with the first screw holes and the second screw holes which are different in size, the first screw holes and the second screw holes which are the same in inner diameter are tightly attached and matched, bolts of different diameters can be conveniently connected and matched in a threaded mode, and under cooperation of the first hydraulic cylinder, position adjustment of the movable clamping plate and tight attachment of the movable clamping plate and the fixed clamping plate are achieved; the bolt is in threaded connection and fixed, the movable clamping plate is separated from the fixed clamping plate, and rapid separation of the bolt is achieved.

Description

Technical Field

[0001] This utility model relates to the field of bolt tightening force technology, specifically a bolt tightening force detection device. Background Technology

[0002] Bolts, as a type of fastener, have advantages such as easy disassembly and direct force transmission. However, during long-term use, bolts may experience varying degrees of preload loss due to environmental factors. Failure to perform preload testing may lead to unstable joint connections or even cause the entire structure to collapse.

[0003] Utility model patent CN216081861U discloses a bolt tightening force limit testing device, including a placement mechanism for placing the bolt to be tested and a testing mechanism detachably installed at one end of the placement mechanism. The placement mechanism includes a working plate and a placement frame on the working plate. A testing block is provided in the middle of the inner side of the placement frame. A through groove is opened in the middle of the testing block. A pressure plate is detachably installed in the through groove. Connecting arms are bolted to both sides of the placement frame. The testing mechanism includes a housing and a drive motor and a rotating shaft installed in the housing. One end of the rotating shaft is connected to the output end of the drive motor. The other end of the rotating shaft is provided with a connector. A hexagonal connecting groove is provided in the middle of the connector. The housing is connected to the front end of the connecting arm.

[0004] The above technical solution allows for the detachable connection between the placement mechanism for the bolt to be tested and the testing mechanism for the bolt, making it very convenient to use and easy to store and maintain when not in operation. However, when testing bolt tightness, it is not convenient to quickly test bolts of different sizes, and the tested bolts are not easy to disassemble quickly, thus failing to shorten the time spent on disassembling the bolts. Utility Model Content

[0005] The purpose of this invention is to provide a bolt tightening force detection device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A bolt tightening force detection device includes a fixed base, a storage groove in the middle of the upper surface of the fixed base, a drawer in the storage groove, a fixed clamping plate at the top of the left end face of the fixed base, a display screen in the middle of the left end face of the fixed base, a second hydraulic cylinder in the middle of the left end face of the fixed base, a plurality of first screw holes at the top right end of the fixed clamping plate, a first slot near the left end of the upper surface of the fixed clamping plate, a first lifting plate in the first slot, a first notch connecting the first slot and the first screw holes, a first support block corresponding to the first notch on the first lifting plate, limiting blocks at both ends of the first lifting plate, limiting holes at the right end of the limiting blocks, a protruding plate corresponding to the telescopic arm of the second hydraulic cylinder on the first lifting plate, a pressure sensor at the bottom of the protruding plate, a movable clamping plate at the top right end of the fixed base, a first hydraulic cylinder at the right end of the movable clamping plate, and a second screw hole corresponding to the first screw holes at the top of the movable clamping plate.

[0008] Furthermore, the first hydraulic cylinder is fixedly connected to the top right side of the fixed base by screws, and the telescopic arm of the first hydraulic cylinder is welded and fixed to the right end of the moving plate.

[0009] In this invention, the first hydraulic cylinder is electrically connected to an external power source via a wire, and the upper control switch on the outer wall of the first hydraulic cylinder is activated to control the flow of internal hydraulic oil, thereby extending or shortening the telescopic arm and adjusting the horizontal position of the moving plate.

[0010] Specifically, the bottom of the fixed plate is welded and fixed to the top of the fixed base, and a first guide plate and a second guide plate are respectively provided on the opposite sides of the fixed plate and the moving plate near the bottom.

[0011] In this invention, the cooperation of the first guide plate and the second guide plate enables the bolts falling from above to be guided into the drawer.

[0012] It should be noted that the top of the moving plate is provided with a second slot, and a second notch is provided between the second slot and the second screw hole. A second lifting plate is provided in the second slot, and a second support block is provided on the second lifting plate at the position corresponding to the second notch.

[0013] In this utility model, the second lifting plate is inserted into the second slot, and the second support block is inserted into the second notch. The second support block is fitted with the top of the installed bolt. The second support block rises to lift the right side of the bolt to be inspected, increasing the force on the right side.

[0014] Furthermore, a fixing plate is provided on the left end face of the second lifting plate near the top. The width of the outer wall of the fixing plate is adapted to the width of the inner wall of the limiting hole. The fixing plate is welded and fixed to the second lifting plate.

[0015] In this invention, the fixing plate and the limiting hole are inserted and matched to achieve a tight insertion and combination of the second lifting plate and the first lifting plate. The first lifting plate rises and drives the second lifting plate to rise synchronously, thereby providing a uniform lifting force on both sides of the fixing bolt, which helps to perform tightness detection.

[0016] Specifically, the moving plate has insert plates at both ends near the left side, and the fixed plate has slots at both ends near the right side, with the width of the inner wall of the slot matching the width of the outer wall of the insert plate.

[0017] In this invention, the insertion plate and the slot are connected and engaged, which increases the stability of the tight connection between the moving plate and the fixed plate.

[0018] It is worth noting that the width of the outer wall of the first lifting plate is adapted to the width of the inner wall of the first slot, the first support block is welded and fixed to the first lifting plate, the convex plate and the first lifting plate are integrally formed, the top of the pressure sensor and the bottom of the convex plate are fixedly connected by screws, and the bottom connection end of the pressure sensor is fixed to the top of the telescopic arm of the second hydraulic cylinder by screws.

[0019] In this utility model, the first support block and the first notch are slidably inserted into each other. The first lifting plate rises or falls to realize the lifting and lowering of the first support block. The first support block provides a lifting force point on the left side of the top of the detected bolt. The second hydraulic cylinder is electrically connected to an external power source through a wire. The upper control switch on the outer wall of the second hydraulic cylinder is activated to control the flow of internal hydraulic oil, thereby realizing the extension or retraction of the telescopic arm, thereby adjusting the vertical movement of the first lifting plate.

[0020] The pressure sensor, specifically the pressure sensor, deforms when pressure is applied to the shaft or diaphragm by the extension arm of the second hydraulic cylinder. The applied pressure is determined by measuring the degree of this deformation. The pressure sensor is a resistive sensor, measuring pressure through changes in resistance. It typically consists of a thin, elastic metal diaphragm, a set of electrodes, and a base plate. External pressure causes the diaphragm to deform, resulting in a change in surface resistance. This change is then electrically connected to a controller on a display screen via wires, displaying the measured resistance change and thus achieving pressure testing.

[0021] Furthermore, the width of the drawer's outer wall is adapted to the width of the storage slot's inner wall. The display screen is fixedly connected to the mounting base with screws. The bottom of the second hydraulic cylinder is fixedly connected to the mounting base with screws. The display screen is electrically connected to the controller on the pressure sensor via wires. The display screen is also electrically connected to an external power source via wires.

[0022] In this invention, a pull handle is provided on the drawer to facilitate the removal or installation of the drawer, and the bolts to be tested are stored in the drawer for convenient collection and testing. The display screen shows the test data information through the controller.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. This utility model, by setting a fixed base with a drawer, helps to centrally collect and inspect bolts. The moving plate and the fixed plate are provided with first and second screw holes of different sizes. The first and second screw holes with the same inner diameter fit tightly together, which facilitates the threaded connection of bolts with different diameters. With the cooperation of the first hydraulic cylinder, the position of the moving plate is adjusted, the moving plate and the fixed plate fit tightly together, the bolt threaded connection is fixed, and the moving plate and the fixed plate are separated, realizing the rapid separation of bolts and reducing the time occupied by bolt disassembly.

[0025] 2. This utility model, by setting a second hydraulic cylinder and cooperating with a pressure sensor, records the pressure applied to the first lifting plate in real time and displays it on the display screen. The first and second lifting plates are connected by a fixed plate and a limit hole on the limit block to achieve synchronous lifting and lowering, and the threaded bolts are lifted to achieve tightness detection. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the detection state structure of this utility model;

[0028] Figure 3 This is a schematic diagram of the combined structure of the fixed base and the first lifting plate of this utility model;

[0029] Figure 4 This is a schematic diagram of the combined structure of the first hydraulic cylinder and the moving clamping plate of this utility model.

[0030] The meanings of the labels in the diagram are as follows:

[0031] 1. Mounting base; 10. Storage slot; 11. Drawer; 110. Pull handle; 12. Display screen;

[0032] 2. Fixed plate; 20. First guide plate; 21. Slot; 22. First screw hole; 23. First notch; 24. First slot; 25. First lifting plate; 250. First support block; 251. Protruding plate; 252. Pressure sensor; 253. Limiting block; 254. Limiting hole;

[0033] 3. Moving plate; 30. Second guide plate; 31. Insert plate; 32. Second screw hole; 33. Second notch; 34. Second lifting plate; 340. Second support block; 341. Fixing plate; 35. Second slot;

[0034] 4. First hydraulic cylinder;

[0035] 5. Second hydraulic cylinder. Detailed Implementation

[0036] 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.

[0037] Please see Figures 1-4 This embodiment provides a technical solution:

[0038] A bolt tightening force detection device includes a fixed base 1, a storage groove 10 is provided in the middle of the upper surface of the fixed base 1, a drawer 11 is provided in the storage groove 10, a fixed plate 2 is provided at the top of the left end face of the fixed base 1, a display screen 12 is provided in the middle of the left end face of the fixed base 1, the width of the outer wall of the drawer 11 is adapted to the width of the inner wall of the storage groove 10, the display screen 12 is fixedly connected to the fixed base 1 by screws, the bottom of the second hydraulic cylinder 5 is fixedly connected to the fixed base 1 by screws, the display screen 12 is electrically connected to the controller on the pressure sensor 252 by wires, and the display screen 12 is electrically connected to an external power source by wires.

[0039] In this utility model, a pull handle 110 is provided on the drawer 11 to facilitate the removal or installation of the drawer 11. The drawer 11 stores the tested bolts for convenient centralized collection. The display screen 12 displays the tested data information through the controller.

[0040] It should be noted that a second hydraulic cylinder 5 is provided at the middle of the left end face of the fixed base 1, and several first screw holes 22 are provided at the top right end of the fixed plate 2. A first slot 24 is provided on the upper surface of the fixed plate 2 near the left end, and a first lifting plate 25 is provided in the first slot 24. A first notch 23 is provided between the first slot 24 and the first screw holes 22. A first support block 250 is provided on the first lifting plate 25 corresponding to the first notch 23. Limiting blocks 253 are provided at both ends of the first lifting plate 25, and a limiting hole 25 is provided at the right end of the limiting block 253. 4. A protruding plate 251 is provided on the first lifting plate 25 at the position corresponding to the telescopic arm of the second hydraulic cylinder 5. A pressure sensor 252 is provided at the bottom of the protruding plate 251. The width of the outer wall of the first lifting plate 25 is adapted to the width of the inner wall of the first slot 24. The first support block 250 is welded and fixed to the first lifting plate 25. The protruding plate 251 and the first lifting plate 25 are integrally formed. The top of the pressure sensor 252 is fixedly connected to the bottom of the protruding plate 251 by screws. The bottom connection end of the pressure sensor 252 is fixed to the top of the telescopic arm of the second hydraulic cylinder 5 by screws.

[0041] In this utility model, the first support block 250 is slidably inserted into the first notch 23. The first lifting plate 25 rises or falls to achieve the lifting and lowering of the first support block 250. The first support block 250 provides a lifting force point on the left side of the top of the detected bolt. The second hydraulic cylinder 5 is electrically connected to an external power source through a wire, and the upper control switch on the outer wall of the second hydraulic cylinder 5 is activated to control the flow of internal hydraulic oil, thereby achieving the extension or shortening of the telescopic arm, thereby adjusting the vertical movement of the first lifting plate 25.

[0042] The pressure sensor 252 is used because when the pressure of the telescopic arm of the second hydraulic cylinder 5 is applied to the shaft or diaphragm, the diaphragm will deform to a certain extent. The magnitude of the applied pressure is determined by measuring the degree of this deformation. The pressure sensor 252 is a resistive sensor, which measures the pressure by measuring the change in resistance. It typically consists of an elastic metal diaphragm, a set of electrodes, and a set of base plates. External pressure causes the diaphragm to deform, resulting in a change in surface resistance. This change is electrically connected to the controller on the display screen 12 via wires, and the measured resistance change value is displayed, thus realizing the pressure test.

[0043] Furthermore, a movable clamping plate 3 is provided at the top right end of the fixed base 1, a first hydraulic cylinder 4 is provided at the right end of the movable clamping plate 3, and a second screw hole 32 is provided at the top of the movable clamping plate 3 corresponding to the first screw hole 22.

[0044] Specifically, the first hydraulic cylinder 4 is fixedly connected to the top right side of the fixed base 1 by screws, and the telescopic arm of the first hydraulic cylinder 4 is welded and fixed to the right end of the moving plate 3.

[0045] In this utility model, the first hydraulic cylinder 4 is electrically connected to an external power source via a wire, and the upper control switch on the outer wall of the first hydraulic cylinder 4 is activated to control the flow direction of the internal hydraulic oil, thereby realizing the extension or retraction of the telescopic arm, and thus adjusting the horizontal movement position of the moving plate 3.

[0046] Secondly, the first hydraulic cylinder 4 is fixedly connected to the top right side of the fixed base 1 by screws, and the telescopic arm of the first hydraulic cylinder 4 is welded and fixed to the right end of the moving plate 3.

[0047] In this utility model, the first hydraulic cylinder 4 is electrically connected to an external power source via a wire, and the upper control switch on the outer wall of the first hydraulic cylinder 4 is activated to control the flow direction of the internal hydraulic oil, thereby realizing the extension or retraction of the telescopic arm, and thus adjusting the horizontal movement position of the moving plate 3.

[0048] It is worth adding that a second slot 35 is provided on the top of the moving plate 3, and a second notch 33 is provided between the second slot 35 and the second screw hole 32. A second lifting plate 34 is provided in the second slot 35, and a second support block 340 is provided on the second lifting plate 34 at the position corresponding to the second notch 33.

[0049] In this utility model, the second lifting plate 34 is inserted into the second slot 35, and the second support block 340 is inserted into the second notch 33. The second support block 340 fits against the top of the installed bolt. The second support block 340 rises to lift the right side of the bolt to be inspected, increasing the force on the right side.

[0050] Furthermore, a fixing plate 341 is provided on the left end face of the second lifting plate 34 near the top. The width of the outer wall of the fixing plate 341 is adapted to the width of the inner wall of the limiting hole 254. The fixing plate 341 is welded and fixed to the second lifting plate 34.

[0051] In this utility model, the fixing plate 341 is inserted into the limiting hole 254 to achieve a tight insertion and combination of the second lifting plate 34 and the first lifting plate 25. The first lifting plate 25 rises and drives the second lifting plate 34 to rise synchronously, thereby providing a uniform lifting force on both sides of the fixed bolt, which helps to perform tightness testing.

[0052] Specifically, a fixing plate 341 is provided on the left end face of the second lifting plate 34 near the top. The width of the outer wall of the fixing plate 341 is adapted to the width of the inner wall of the limiting hole 254. The fixing plate 341 is welded and fixed to the second lifting plate 34.

[0053] In this utility model, the fixing plate 341 is inserted into the limiting hole 254 to achieve a tight insertion and combination of the second lifting plate 34 and the first lifting plate 25. The first lifting plate 25 rises and drives the second lifting plate 34 to rise synchronously, thereby providing a uniform lifting force on both sides of the fixed bolt, which helps to perform tightness testing.

[0054] When using the bolt tightening force detection device of this embodiment, the user first inserts the first lifting plate 25 with the first support block 250 into the first slot 24, and the first support block 250 into the first notch 23. The second hydraulic cylinder 5 is fixed at the left end of the fixed base 1, and the telescopic arm of the second hydraulic cylinder 5 is fixedly installed with the pressure sensor 252 on the protrusion plate 251. Then, the second lifting plate 34 with the second support block 340 is inserted into the second slot 35, and the second support block 340 into the second notch 33. The first hydraulic cylinder 4 is fixed on the right end of the fixed base 1, and the end of the telescopic arm of the first hydraulic cylinder 4 is fixedly installed with the moving plate 3. The drawer 11 with the handle 110 is inserted into the storage slot 10. The display screen 12 is installed on the left end of the fixed base 1, and the pressure sensor 252, the first hydraulic cylinder 4, and the second hydraulic cylinder 5 are all electrically connected to the controller on the display screen 12 through wires.

[0055] When bolt tightness testing is required, the telescopic arm of the first hydraulic cylinder 4 is extended to achieve a tight fit between the moving plate 3 and the fixed plate 2, and the insert plate 31 and the slot 21 are inserted into each other. The first screw hole 22 and the second screw hole 32 of the same inner diameter correspond. Then, the corresponding bolt is threaded into the test hole formed by the corresponding first screw hole 22 and the second screw hole 32. The telescopic arm of the second hydraulic cylinder 5 is extended, and the pressure sensor 252 transmits the detected applied pressure data to the display screen 12 for display. The limiting hole 254 of the limiting block 253 on the first lifting plate 25 and the limiting hole 254 on the second lifting plate 34 are connected. The fixed plate 341 is inserted and engaged. The first lifting plate 25 and the second lifting plate 34 rise synchronously. With the cooperation of the first support block 250 and the second support block 340, lifting force is provided to both sides of the bolt at the same time to detect the change in tightness. When the bolt to be tested needs to be quickly separated, the user controls the extension arm of the second hydraulic cylinder 5 to shorten. The first lifting plate 25 is stored in the first slot 24 and the second lifting plate 34 is stored in the second slot 35. Then, the extension arm of the first hydraulic cylinder 4 is controlled to retract, so that the moving plate 3 moves away from the fixed plate 2, and the bolt between the first screw hole 22 and the second screw hole 32 is quickly disengaged.

[0056] With the cooperation of the first guide plate 20 and the second guide plate 30, the detached screws are concentrated into the drawer 11 for convenient centralized processing. The overall assembly is convenient. With the cooperation of the display screen 12, the pressure applied by the first hydraulic cylinder 4 and the pressure sensor 252 can be viewed in real time, thereby understanding the bolt tightening force.

Claims

1. A bolt tightening force testing device, comprising a fixed base (1), characterized in that: A storage slot (10) is provided in the middle of the upper surface of the fixed base (1), and a drawer (11) is provided in the storage slot (10). A fixed plate (2) is provided at the top of the left end face of the fixed base (1). A display screen (12) is provided in the middle of the left end face of the fixed base (1). A second hydraulic cylinder (5) is provided in the middle of the left end face of the fixed base (1). Several first screw holes (22) are provided at the top right end of the fixed plate (2). A first slot (24) is provided on the upper surface of the fixed plate (2) near the left end. A first lifting plate (25) is provided in the first slot (24). A first notch is provided between the first slot (24) and the first screw hole (22). (23) A first support block (250) is provided on the first lifting plate (25) at the position corresponding to the first notch (23). A limit block (253) is provided at both ends of the first lifting plate (25). A limit hole (254) is opened at the right end of the limit block (253). A protrusion plate (251) is provided on the first lifting plate (25) at the position corresponding to the telescopic arm of the second hydraulic cylinder (5). A pressure sensor (252) is provided at the bottom of the protrusion plate (251). A movable clamping plate (3) is provided at the top right end of the fixed seat (1). A first hydraulic cylinder (4) is provided at the right end of the movable clamping plate (3). A second screw hole (32) is opened at the top of the movable clamping plate (3) at the position corresponding to the first screw hole (22).

2. The bolt tightening force detection device according to claim 1, characterized in that: The first hydraulic cylinder (4) is fixedly connected to the top right side of the fixed seat (1) by screws, and the telescopic arm of the first hydraulic cylinder (4) is welded and fixed to the right end of the moving plate (3).

3. The bolt tightening force detection device according to claim 1, characterized in that: The bottom of the fixed plate (2) is welded and fixed to the top of the fixed seat (1). The fixed plate (2) and the moving plate (3) are respectively provided with a first guide plate (20) and a second guide plate (30) near the bottom on the opposite sides of the fixed plate (2) and the moving plate (3).

4. The bolt tightening force detection device according to claim 1, characterized in that: The top of the moving plate (3) is provided with a second slot (35), and a second notch (33) is provided between the second slot (35) and the second screw hole (32). A second lifting plate (34) is provided in the second slot (35), and a second support block (340) is provided on the second lifting plate (34) at the position corresponding to the second notch (33).

5. The bolt tightening force detection device according to claim 4, characterized in that: The second lifting plate (34) is provided with a fixing plate (341) near the top on the left end face. The width of the outer wall of the fixing plate (341) is adapted to the width of the inner wall of the limiting hole (254). The fixing plate (341) is welded and fixed to the second lifting plate (34).

6. The bolt tightening force detection device according to claim 1, characterized in that: The moving plate (3) has insert plates (31) at both ends near the left side, and the fixed plate (2) has slots (21) at both ends near the right side. The width of the inner wall of the slot (21) is adapted to the width of the outer wall of the insert plate (31).

7. The bolt tightening force detection device according to claim 1, characterized in that: The width of the outer wall of the first lifting plate (25) is adapted to the width of the inner wall of the first slot (24). The first support block (250) is welded and fixed to the first lifting plate (25). The convex plate (251) and the first lifting plate (25) are integrally formed. The top of the pressure sensor (252) is fixedly connected to the bottom of the convex plate (251) by screws. The bottom connection end of the pressure sensor (252) is fixed to the top of the telescopic arm of the second hydraulic cylinder (5) by screws.

8. The bolt tightening force detection device according to claim 1, characterized in that: The width of the outer wall of the drawer (11) is adapted to the width of the inner wall of the storage slot (10). The display screen (12) is fixedly connected to the fixing seat (1) by screws. The bottom of the second hydraulic cylinder (5) is fixedly connected to the fixing seat (1) by screws. The display screen (12) is electrically connected to the controller on the pressure sensor (252) by wires. The display screen (12) is electrically connected to an external power source by wires.

Images