CN217520639U

CN217520639U - Bolt pretightening force measuring device suitable for field operation

Info

Publication number: CN217520639U
Application number: CN202221213802.7U
Authority: CN
Inventors: 郑建军; 张涛; 韩扩; 刘孝
Original assignee: Inner Mongolia Electric Power Research Institute of Inner Mongolia Power Group Co Ltd
Current assignee: Inner Mongolia Electric Power Research Institute of Inner Mongolia Power Group Co Ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-09-30
Anticipated expiration: 2032-05-20

Abstract

The utility model belongs to the technical field of the bolt pretightning force is measured, especially, a bolt pretightning force measuring device suitable for field operation to current bolt pretightning force measuring device suitable for field operation, when maintaining the display, be not convenient for carry out the problem dismantled to the display, present following scheme is proposed, and it includes the pressure test seat, pressure test seat internal rotation is connected with passive screw rod, and fixedly connected with driven gear on the passive screw rod, the last meshing of driven gear is connected with the drive rack, and threaded connection has two movable plates on the passive screw rod, and fixed mounting has supplementary slide bar in the pressure test seat, and two movable plates all with supplementary slide bar sliding connection, one side of pressure test seat is equipped with the display, is equipped with disassembly body in the pressure test seat, and disassembly body and supplementary slide bar connection. The utility model discloses simple structure is being maintained the display, is convenient for dismantle it, makes things convenient for people to use.

Description

Bolt pretightening force measuring device suitable for field operation

Technical Field

The utility model relates to a technical field is measured to the bolt pretightning force, especially relates to a bolt pretightning force measuring device suitable for field operation.

Background

A threaded connection is one of the most common types of connection fixtures. The main functions are as follows: when the connected piece bears a certain load, the connected part can work reliably and normally. This requires that the screw for the connection has sufficient axial prestress after tightening. The working principle of the commercial pretightening force measuring device is to measure the tightening torque and indirectly calculate the pretightening force according to an empirical formula. The actually realized pretightening force is influenced by factors such as surface roughness, rigidity, machining size fluctuation and the like, and has larger difference with the pretightening force obtained by calculation. Therefore, in designing and confirming the bolt tightening reliability, the judgment cannot be made only from the calculated value, and the calculated value and the actual measured value should be considered in combination.

The existing bolt pretightening force measuring device suitable for field operation is inconvenient to disassemble a display when the display is maintained.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving current bolt pretightning force measuring device who is applicable to the field operation, when maintaining the display, be not convenient for carry out the shortcoming of dismantling to the display, and the bolt pretightning force measuring device who is applicable to the field operation who proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a bolt pretightning force measuring device suitable for field operation, including the pressure test seat, the pressure test seat internal rotation is connected with passive screw rod, fixedly connected with driven gear on the passive screw rod, the meshing is connected with the drive rack on the driven gear, threaded connection has two movable plates on the passive screw rod, fixed mounting has supplementary slide bar in the pressure test seat, two movable plates all with supplementary slide bar sliding connection, one side of pressure test seat is equipped with the display, be equipped with disassembly body in the pressure test seat, disassembly body and supplementary slide bar connection, sliding connection drags the post in the pressure test seat, it is connected with the drive rack to drag the post, and drag and be equipped with the draw-in groove on the post.

Preferably, the pressure test seat is internally connected with a first spring, the first spring is connected with an L-shaped plate, the first spring releases elastic force and can drive the L-shaped plate to move downwards, the L-shaped plate is connected with the pressure test seat in a sliding manner, and the bottom of the L-shaped plate is connected with a fixing pin.

Preferably, the dismounting mechanism comprises a second spring, two long plates and two clamping blocks, the second spring is sleeved on the auxiliary slide bar, the two long plates are fixedly connected with the two moving plates respectively, the two moving plates can slide on the auxiliary slide bar and compress the second spring, the two clamping blocks are fixedly connected with the two moving plates respectively, and the two clamping blocks are located in the display.

Preferably, be connected with the data line between pressure test seat and the display, be equipped with the pressure piece on the pressure test seat, be equipped with the test bolt between pressure test seat and the pressure piece, be equipped with the internal thread post in the pressure test seat, internal thread post and test bolt threaded connection.

Preferably, the bottom of pressure test seat is equipped with the mounting panel, is equipped with two connecting bolt between pressure test seat and the mounting panel, and the equal threaded connection of one end of two connecting bolt has the nut.

The utility model discloses in, a beneficial effect that is used for gas accuse valve of tooth machine system:

the utility model discloses, through setting up second spring, two long boards and two fixture blocks, two movable plate extrusion second springs, and drive two fixture blocks when being close to, can dismantle the display.

The utility model discloses simple structure is when maintaining the display, is convenient for dismantle it, makes things convenient for people to use.

Drawings

Fig. 1 is a schematic structural diagram of a bolt pretightening force measuring device suitable for field operation according to the present invention;

fig. 2 is a schematic perspective view of a movable plate of the bolt pretightening force measuring device suitable for field operation according to the present invention;

fig. 3 is the utility model provides a bolt pretightning force measuring device's a part schematic structure suitable for field operation.

In the figure: 1. a pressure test seat; 2. a passive screw; 3. a driven gear; 4. a drive rack; 5. moving the plate; 6. an auxiliary slide bar; 7. a display; 8. dragging the column; 9. a first spring; 10. an L-shaped plate; 11. a fixing pin; 12. a second spring; 13. a long plate; 14. a clamping block; 15. a data line; 16. testing the bolt; 17. a pressure block; 18. an internally threaded post; 19. a connecting bolt; 20. mounting a plate; 21. and (4) a nut.

Detailed Description

The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments, but not all embodiments.

Example one

Referring to fig. 1-3, a bolt pretightening force measuring device suitable for field operation comprises a pressure test seat 1, a driven screw 2 is rotatably connected in the pressure test seat 1, a driven gear 3 is fixedly connected to the driven screw 2, a driving rack 4 is engaged and connected to the driven gear 3, two movable plates 5 are in threaded connection with the driven screw 2, an auxiliary slide bar 6 is fixedly mounted in the pressure test seat 1, the two movable plates 5 are both in sliding connection with the auxiliary slide bar 6, a display 7 is arranged on one side of the pressure test seat 1, a dismounting mechanism is arranged in the pressure test seat 1 and connected with the auxiliary slide bar 6, a dragging column 8 is slidably connected in the pressure test seat 1, the dragging column 8 is connected with the driving rack 4, and a clamping groove is formed in the dragging column 8.

In this embodiment, pressure test seat 1 in-connection has first spring 9, is connected with L template 10 on the first spring 9, and first spring 9 releases elasticity, can drive L template 10 downstream, and L template 10 and pressure test seat 1 sliding connection, the bottom of L template 10 are connected with fixed pin 11.

In this embodiment, the detaching mechanism includes a second spring 12, two long plates 13 and two clamping blocks 14, the second spring 12 is sleeved on the auxiliary sliding rod 6, the two long plates 13 are respectively and fixedly connected with the two moving plates 5, the two moving plates 5 can slide on the auxiliary sliding rod 6 and compress the second spring 12, the two clamping blocks 14 are respectively and fixedly connected with the two moving plates 5, and the two clamping blocks 14 are both located in the display 7.

In this embodiment, a data line 15 is connected between the pressure test base 1 and the display 7, a pressure block 17 is arranged on the pressure test base 1, a test bolt 16 is arranged between the pressure test base 1 and the pressure block 17, an internal thread column 18 is arranged in the pressure test base 1, and the internal thread column 18 is in threaded connection with the test bolt 16.

In this embodiment, the bottom of pressure test seat 1 is equipped with mounting panel 20, is equipped with two connecting bolt 19 between pressure test seat 1 and the mounting panel 20, and the equal threaded connection of one end of two connecting bolt 19 has nut 21.

In this embodiment, when the display 7 needs to be disassembled, the pulling column 8 is pulled outwards, the pulling column 8 drives the driving rack 4 to move, the driving rack 4 drives the driven gear 3 to rotate, the driven gear 3 drives the driven screw 2 to rotate, the driven screw 2 drives the two movable plates 5 to approach each other, the two movable plates 5 slide on the auxiliary slide bar 6, and the second spring 12 is compressed, the two movable plates 5 drive the two clamping blocks 14 to approach each other through the two long plates 13, and are separated from the display 7, meanwhile, the clamping groove and the fixing pin 11 are on the same vertical line, the first spring 9 releases elasticity, the L-shaped plate 10 is driven to move downwards, the L-shaped plate 10 drives the fixing pin 11 to move downwards, and the clamping groove is clamped into, and the disassembling of the display 7 can be completed.

Example two

The difference between this embodiment and the first embodiment is: be equipped with pressure sensors and annunciator in the pressure test seat 1, pressure sensors senses the pressure of test bolt 16, and accessible annunciator transmission shows to display 7, and all structures in this application all can carry out the selection of material and length according to the in service behavior, and the drawing is the schematic structure picture, and suitable adjustment can be made to specific actual size.

The above descriptions are only preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to or changed within the scope of the present invention.

Claims

1. The bolt pretightening force measuring device suitable for field operation comprises a pressure test seat (1) and is characterized in that a driven screw (2) is connected in the pressure test seat (1) in a rotating manner, a driven gear (3) is fixedly connected on the driven screw (2), a driving rack (4) is connected on the driven gear (3) in a meshing manner, two movable plates (5) are connected on the driven screw (2) in a threaded manner, an auxiliary slide bar (6) is fixedly arranged in the pressure test seat (1), the two movable plates (5) are both in sliding connection with the auxiliary slide bar (6), a display (7) is arranged on one side of the pressure test seat (1), a dismounting mechanism is arranged in the pressure test seat (1) and is connected with the auxiliary slide bar (6), a dragging column (8) is connected in the pressure test seat (1) in a sliding manner, the dragging column (8) is connected with the driving rack (4), and a clamping groove is arranged on the dragging column (8).

2. The bolt pretightening force measuring device suitable for field operation according to claim 1, wherein a first spring (9) is connected in the pressure testing seat (1), an L-shaped plate (10) is connected on the first spring (9), the L-shaped plate (10) is slidably connected with the pressure testing seat (1), and a fixing pin (11) is connected at the bottom of the L-shaped plate (10).

3. The bolt pretightening force measuring device suitable for field operation according to claim 1, wherein the detaching mechanism includes a second spring (12), two long plates (13) and two clamping blocks (14), the second spring (12) is sleeved on the auxiliary slide bar (6), the two long plates (13) are respectively and fixedly connected with the two moving plates (5), the two clamping blocks (14) are respectively and fixedly connected with the two moving plates (5), and the two clamping blocks (14) are both located in the display (7).

4. The bolt pretightening force measuring device suitable for field operation according to claim 1, wherein a data line (15) is connected between the pressure test base (1) and the display (7), a pressure block (17) is arranged on the pressure test base (1), a test bolt (16) is arranged between the pressure test base (1) and the pressure block (17), an internal threaded column (18) is arranged in the pressure test base (1), and the internal threaded column (18) is in threaded connection with the test bolt (16).

5. The bolt pretightening force measuring device suitable for field operation according to claim 1, wherein a mounting plate (20) is arranged at the bottom of the pressure test base (1), two connecting bolts (19) are arranged between the pressure test base (1) and the mounting plate (20), and one ends of the two connecting bolts (19) are both in threaded connection with nuts (21).