Bolt and nut pressure testing machine

Abstract

The utility model discloses a bolt and nut pressure testing machine which comprises a base, the upper end face of the base is rotatably provided with a vertical shaft, the upper end face of the vertical shaft is fixedly connected with a rotating plate, and the upper end face of the rotating plate is respectively provided with a nut mounting seat and a bolt mounting seat. Circular grooves are formed in the upper end face of the nut mounting base and the upper end face of the bolt mounting base correspondingly, a containing plate is arranged on the bottom faces of the circular grooves, clamping plates are arranged on the two sides in the circular groove in the upper end face of the nut mounting base, and arc-shaped plates are arranged on the two sides in the circular groove in the upper end face of the bolt mounting base. The arc-shaped plate is in transmission connection with the containing plate through a gravity transmission mechanism, the clamping plate is in transmission connection with the containing plate through a gravity transmission mechanism, an L-shaped plate is installed on one side of the upper end face of the base, and a hydraulic rod is installed on the upper end face of the L-shaped plate. According to the utility model, the nut and the bolt can be respectively fixed and detected, and the applicability and the detection effect are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt and nut testing, in particular to a bolt and nut pressure testing machine. Background Art

[0002] The welding strength of bolts and nuts needs to be tested during the development and production of machinery and equipment. Therefore, the strength of bolts and nuts needs to be tested on parts with welded bolts and nuts.

[0003] For example, a bolt and nut pressure testing machine with a Chinese authorized patent and announcement number CN209764605U. When using the utility model to perform a bolt and nut pressure test, the component to be tested is placed on the pressure seat assembly, and the bolts or nuts welded thereon are stuck in the opening at the upper end of the pressure seat assembly. Then, the linear displacement output end of the driving device is controlled to move upward, and the pressure head can press the bolt or nut off the component and drop it into the cavity of the pressure seat assembly. In the process of the pressure head applying force to the component, the measuring device can detect the pressure when the bolt or nut is pressed off in real time. The pressure head can be detachably connected to the pressure head seat, and the type of pressure head can be flexibly adjusted according to the shape and specifications of the bolt or nut to be pressed off, which is extremely convenient to operate.

[0004] However, the above-mentioned testing machine can detect the stress between the bolts and nuts, but it is inconvenient to detect the actual compressive resistance of the nuts and bolts. Some nuts and bolts need to be tested for their compressive performance after production, and the nuts are prone to fall off when under pressure, which causes the nuts to fall and the detection effect to fail; therefore, it does not meet the existing needs, and we have proposed a bolt and nut pressure testing machine. Utility Model Content

[0005] The purpose of the present invention is to provide a bolt and nut pressure testing machine to solve the problem proposed in the above background technology that the above-mentioned testing machine can detect the stress between the bolt and the nut, but it is inconvenient to detect the actual compressive effect of the nuts and bolts. Some nuts and bolts need to be tested for their compressive performance after production, and the nuts are prone to fall off when under pressure, which causes the nuts to fall off and causes failure in the detection effect.

[0006] The cam is fixedly provided with a camshaft and a camshaft, and the camshaft and the camshaft are connected with each other to form a circle, and the camshaft and the camshaft are connected with each other to form a circle.

[0007] Preferably, a motor is installed inside the base through a motor cavity, the output end of the motor is fixedly connected to the lower end surface of the vertical shaft through a coupling, and the display screen is electrically connected to the pressure sensor.

[0008] Preferably, the gravity transmission mechanism includes a movable plate, which is fixedly connected to the outer surfaces of the arc plate and the clamping plate. The movable plate is arranged on both sides of the inner wall of the circular groove through grooves. A push rod is provided at the inner end of the movable plate, and a spring B is sleeved on the outer surface of the push rod.

[0009] Preferably, a movable cavity is provided below the circular groove, the placement plate is located inside the movable cavity, and the bottom surface of the placement plate is connected to the bottom surface of the movable cavity via a spring A.

[0010] Preferably, a transmission cavity is provided on the inner side of the groove, a rotating rod is installed inside the transmission cavity, a touch rod is fixedly installed on one end of the upper end surface of the rotating rod, the top end of the touch rod extends to the surface of the top end of the push rod, and the other end of the rotating rod is connected to the upper end surface of the outer side of the placement plate through a transmission rod.

[0011] Preferably, the position of the rotating rod close to the transmission rod is connected to the transmission cavity through a rotating shaft A, and both ends of the transmission rod are connected to the rotating rod and the placement plate through a rotating shaft B.

[0012] Preferably, a plurality of anti-slip rubber strips are installed on the opposite sides of the outer surfaces of each two of the clamping plates and the curved plates.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The cam is pressed down by the weight of the nut, and the cam is pressed down by the weight of the nut, and the cam is pressed down by the weight of the nut, and the cam is pressed down by the weight of the nut, and the cam is pressed down by the weight of the nut, and the cam is pressed down by the weight of the nut, and the cam is pressed down by the weight of the nut, and the cam is pressed down by the weight of the nut, and the cam is pressed down by the weight of the nut, and the cam is pressed down by the weight of the nut, and the cam is pressed down by the weight of the nut, and the cam is pressed down by the weight of the nut, and the cam is pressed down by the weight of the nut, and the cam is pressed BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a main cross-sectional view of the utility model as a whole;

[0017] Figure 3 This is a main sectional view of the nut mounting seat of the utility model;

[0018] Figure 4 This is a partial structural diagram of the gravity transmission mechanism of the utility model;

[0019] Figure 5 It is a top view of the nut mounting seat and the bolt mounting seat of the utility model.

[0020] In the figure: 1. Base; 2. Rotating plate; 3. Nut mounting seat; 4. L-shaped plate; 5. Pressure plate; 6. Hydraulic rod; 7. Pressure sensor; 8. Bolt mounting seat; 9. Vertical axis; 10. Display screen; 11. Arc plate; 12. Gravity transmission mechanism; 1201. Movable plate; 1202. Movable cavity; 1203. Spring A; 1204. Groove; 1205. Push rod; 1206. Spring B; 1207. Touch rod; 1208. Rotating rod; 1209. Transmission rod; 1210. Transmission cavity; 13. Clamp; 14. Circular groove; 15. Placement plate. DETAILED DESCRIPTION

[0021] 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.

[0022] The hydraulic rod 6 (model SJYG70-1000), pressure sensor 7 (model KH15-S91) and motor (model 68KTYZ) mentioned in the present invention can be purchased from the market or obtained through private customization.

[0023] See also Figures 1 to 5 The utility model provides an embodiment of a bolt and nut pressure testing machine, comprising a base 1, the upper end surface of the base 1 is rotatably provided with a vertical shaft 9, the upper end surface of the vertical shaft 9 is fixedly connected to a rotating plate 2, the upper end surfaces of the rotating plate 2 are respectively provided with a nut mounting seat 3 and a bolt mounting seat 8, the upper end surfaces of the nut mounting seat 3 and the bolt mounting seat 8 are both provided with a circular groove 14, the bottom surface of the circular groove 14 is provided with a placing plate 15, and clamping plates 13 are provided on both sides of the circular groove 14 on the upper end surface of the nut mounting seat 3. The circular groove 14 on the upper end surface of the bolt mounting seat 8 is provided on both sides of the inner surface of the circular groove 14, and the curved plate 11 and the placing plate 15, the clamping plate 13 and the placing plate 15 are all connected by a gravity transmission mechanism 12. An L-shaped plate 4 is installed on one side of the upper end surface of the base 1, and a hydraulic rod 6 is installed on the upper end surface of the L-shaped plate 4. A pressure plate 5 is installed on the lower end surface of the hydraulic rod 6. A pressure sensor 7 is installed at the connection between the hydraulic rod 6 and the pressure plate 5, and a display screen 10 is installed on the front end surface of the base 1.

[0024] Furthermore, a motor is installed inside the base 1 through the motor cavity, the output end of the motor is fixedly connected to the lower end face of the vertical shaft 9 through a coupling, and the display screen 10 is electrically connected to the pressure sensor 7. The operation of the motor can drive the vertical shaft 9 to rotate, thereby driving the rotating plate 2 to rotate. The value measured by the pressure sensor 7 can be displayed on the display screen 10 for the staff to watch.

[0025] The gravity transmission mechanism 12 includes a movable plate 1201, which is fixedly connected to the outer surfaces of the arc plate 11 and the splint 13. The movable plate 1201 is arranged on both sides of the inner wall of the circular groove 14 through a groove 1204. A push rod 1205 is provided at the inner end of the movable plate 1201, and a spring B1206 is provided on the outer surface of the push rod 1205. The movement of the movable plate 1201 can drive the arc plate 11 and the splint 13 to move.

[0026] An active cavity 1202 is provided below the circular groove 14 , and the placement plate 15 is located inside the active cavity 1202 . The bottom surface of the placement plate 15 is connected to the bottom surface of the active cavity 1202 via a spring A1203 , and the placement plate 15 can move up and down inside the active cavity 1202 .

[0027] A transmission cavity 1210 is provided on the inner side of the groove 1204, and a rotating rod 1208 is installed inside the transmission cavity 1210. A touch rod 1207 is fixedly installed on one end of the upper end surface of the rotating rod 1208, and the top of the touch rod 1207 extends to the surface of the top of the push rod 1205. The other end of the rotating rod 1208 is connected to the upper end surface of the outer side of the placement plate 15 through a transmission rod 1209. When the placement plate 15 moves downward, the transmission rod 1209 will be pulled downward, driving the rotating rod 1208 to rotate, causing the touch rod 1207 to rotate upward, and pushing the push rod 1205 to the outside of the groove 1204.

[0028] The rotating rod 1208 is connected to the transmission cavity 1210 via the rotating shaft A near the transmission rod 1209, and both ends of the transmission rod 1209 are connected to the rotating rod 1208 and the placement plate 15 via the rotating shaft B, which facilitates transmission and ensures stable transmission.

[0029] A plurality of anti-slip rubber strips are installed on the opposite side of the outer surface of each two clamping plates 13 and the arc-shaped plate 11 to improve the stability of the clamping plates 13 on the nuts and the stability of the arc-shaped plate 11 on the bolts.

[0030] When the bolt and nut pressure testing machine is in use, it is provided with a nut mounting seat 3, a bolt mounting seat 8, an arc plate 11, a gravity transmission mechanism 12, and a clamping plate 13. The clamping plate 13 can stably clamp the nut and the arc plate 11 can stably clamp the bolt by gravity. The nut to be tested is placed in the circular groove 14 of the nut mounting seat 3, and the placing plate 15 is pressed down under the gravity of the nut. When the placing plate 15 moves downward, the transmission rod 1209 will be pulled downward, driving the rotating rod 1208 to rotate, so that the touch rod 1207 rotates upward, and the push rod 1205 is pushed out to the outside of the groove 1204. The movement of the push rod 1205 drives the two clamping plates 13 to move simultaneously in the direction close to both sides of the outer surface of the nut until the clamping plates 1 The outer surface of 3 contacts the outer surface of the nut, and the anti-slip rubber strip is provided to improve the stability of its clamping. Similarly, after the bolt is placed in the bolt mounting seat 8, the arc plate 11 will stably clamp the bolt under the action of the gravity transmission mechanism 12, thereby improving the stability of the pressure test. According to the detection needs, the motor can be controlled to adjust the rotating plate 2 to adjust the position of the nut mounting seat 3 and the bolt mounting seat 8, and then the pressure plate 5 can be driven to move downward by controlling the hydraulic rod 6 to perform a pressure test on the test piece. The value measured by the pressure sensor 7 will be displayed on the display screen 10 for the staff to watch. The utility model can fix and detect nuts and bolts respectively, improving the applicability and detection effect.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A bolt and nut pressure testing machine, comprising a base (1), characterized in that: The upper end surface of the base (1) is rotatably provided with a vertical shaft (9), the upper end surface of the vertical shaft (9) is fixedly connected with a rotating plate (2), the upper end surface of the rotating plate (2) is respectively provided with a nut mounting seat (3) and a bolt mounting seat (8), the upper end surfaces of the nut mounting seat (3) and the bolt mounting seat (8) are both provided with a circular groove (14), the bottom surface of the circular groove (14) is provided with a placement plate (15), the inner sides of the circular groove (14) of the upper end surface of the nut mounting seat (3) are provided with clamping plates (13), the circular groove (14) of the upper end surface of the bolt mounting seat (8) is provided with a clamping plate (15), and the upper end surface of the nut mounting seat (3) is provided with a clamping plate (13). 4) arc-shaped plates (11) are provided on both sides of the interior, and the arc-shaped plates (11) and the placement plates (15), as well as the clamping plates (13) and the placement plates (15) are all connected by a gravity transmission mechanism (12). An L-shaped plate (4) is installed on one side of the upper end face of the base (1), a hydraulic rod (6) is installed on the upper end face of the L-shaped plate (4), a pressure plate (5) is installed on the lower end face of the hydraulic rod (6), a pressure sensor (7) is installed at the connection between the hydraulic rod (6) and the pressure plate (5), and a display screen (10) is installed on the front end face of the base (1).

2. A bolt and nut pressure testing machine according to claim 1, characterized in that: A motor is installed inside the base (1) through a motor cavity, an output end of the motor is fixedly connected to the lower end surface of the vertical shaft (9) through a coupling, and the display screen (10) is electrically connected to the pressure sensor (7).

3. The bolt and nut pressure testing machine according to claim 1, characterized in that: The gravity transmission mechanism (12) includes a movable plate (1201), which is fixedly connected to the outer surfaces of the arc plate (11) and the clamping plate (13). The movable plate (1201) is arranged on both sides of the inner wall of the circular groove (14) through a groove (1204). A push rod (1205) is provided at the inner end of the movable plate (1201), and a spring B (1206) is sleeved on the outer surface of the push rod (1205).

4. The bolt and nut pressure testing machine according to claim 3, characterized in that: An active cavity (1202) is provided below the circular groove (14), the placement plate (15) is located inside the active cavity (1202), and the bottom surface of the placement plate (15) is connected to the bottom surface of the active cavity (1202) via a spring A (1203).

5. The bolt and nut pressure testing machine according to claim 3, characterized in that: A transmission cavity (1210) is provided on the inner side of the groove (1204), a rotating rod (1208) is installed inside the transmission cavity (1210), a touch rod (1207) is fixedly installed on one end of the upper end surface of the rotating rod (1208), the top end of the touch rod (1207) extends to the surface of the top end of the push rod (1205), and the other end of the rotating rod (1208) is connected to the upper end surface of the outer side of the placement plate (15) through a transmission rod (1209).

6. The bolt and nut pressure testing machine according to claim 5, characterized in that: The position of the rotating rod (1208) close to the transmission rod (1209) is connected to the transmission cavity (1210) via a rotating shaft A, and both ends of the transmission rod (1209) are connected to the rotating rod (1208) and the placement plate (15) via a rotating shaft B.

7. The bolt and nut pressure testing machine according to claim 1, characterized in that: A plurality of anti-slip rubber strips are installed on the opposite side of the outer surface of each of the two clamping plates (13) and the arc-shaped plate (11).

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