Bolt pressing device

Abstract

The utility model relates to the technical field of fasteners, in particular to a pressing lever bolt device. The pressing lever bolt device comprises a screw rod, a hooking head is arranged at the lower end of the screw rod, a pressing nut used for pressing a pressing lever is installed on the screw rod, a fracture warning device is arranged at the upper end of the screw rod, and the fracture warning device comprises an elastic body used for being installed between the pressing nut and the pressing lever in an abutting mode. According to the utility model, the existing pressure lever bolt device is improved. Specifically, according to the pressing lever bolt device, the elastic body is utilized, the pressing lever bolt can be bounced through the elastic body after being broken, breakage of the pressing lever bolt can be found in the first time, the pressing lever bolt can be replaced in time, and the problem that the pressing lever bolt is not easy to find after being broken is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a pressure bar bolt device. Background Art

[0002] The base of the pumping unit used for oil field production needs to be fixed on the cement foundation under the pumping unit to stabilize the pumping unit. The pressure bar bolt is an important fastening component that fixes the base of the pumping unit to the cement foundation. Each pumping unit is fixed by 6 pressure bars and 12 pressure bar bolts to prevent the pumping unit from tipping over. The upper part of the pressure bar bolt is equipped with a tightening nut, and the lower part is connected with a straightening block (hook head). The base of the pumping unit is placed on the cement foundation. There is a cement foundation connection hole for connecting the pressure bar bolt on the cement foundation. A hanging plate is prefabricated at a depth of 22cm in the cement foundation connection hole. The hanging plate is a round thick steel plate. A rectangular through groove is provided in the middle of the hanging plate to cooperate with the hook head of the pressure bar bolt. After the hook head of the pressure bar bolt is inserted into the rectangular through groove, it is rotated and hung on the hanging plate. The upper part of the pressure bar bolt passes through the pressure bar connection hole and is tightened by the nut to fix the base of the pumping unit and the cement foundation together.

[0003] At present, the existing pressure bar bolts have the following problems: 1. It is not easy to find the pressure bar bolt after it breaks. The pressure bar bolt usually breaks at the root, and it will break in the cement foundation connection hole, while the nut on the upper part of the pressure bar bolt is still intact. If it is not deliberately knocked, the pressure bar bolt cannot be found to be broken. It is very dangerous to knock on the running oil pump. If the breakage of a pressure bar bolt is not found in time, it is very likely to cause the breakage of other pressure bar bolts. The breakage of multiple pressure bar bolts will cause major safety hazards to the oil pump and easily cause the machine to overturn. 2. The cement foundation connection hole is an open structure, and water and sediment are easy to enter. The oil pump is running in the field, and the cement foundation connection hole is open for a long time. A large amount of sediment and water will enter the cement foundation connection hole. The accumulated water is easy to cause the hanging plate to corrode and shorten the life of the hanging plate. The sediment will make it very difficult to replace the pressure bar bolt; 3. Blind hanging. The hanging plate in the cement foundation connection hole is 22 cm away from the hole. The hole is dark and blocked by dirt. It is not easy to see whether the hook head of the pressure bar bolt is completely hung. The hook head needs to be perpendicular to the hanging plate so that the hook head can be hung correctly. If it is not hung correctly, it is easy to cause the pressure bar bolt to loosen; 4. The pressure bar bolt is easy to break. The oil pump makes up and down reciprocating motion during operation. The pressure bar bolt mainly bears the up and down alternating load. The joint between the hook head of the pressure bar bolt and the screw rod bears the up and down alternating load for a long time. The hook head and the screw rod are connected by threads, which is very easy to cause the screw and the hook head to break.

[0004] The Chinese utility model patent with the authorization announcement number CN206268212U and the authorization announcement date June 20, 2017 discloses a pressure bar bolt, which includes a compression nut, a screw rod, and a straightening block. A reinforcing support plate is symmetrically welded at the junction of the straightening block and the screw rod, and the upper end of the screw rod is connected to the pressure nut by a thread. The pressure bar bolt has a reinforcing support plate symmetrically welded at the junction of the screw rod and the lower part of the straightening block, and the force concentration point is changed from the original junction of the straightening block and the screw rod to the support force on both sides, which improves the tensile performance; the straightening block symmetrically reinforced support plates are directly welded to the lower part of the screw rod, which increases the diameter of the original threaded connection, improves the firmness, and reduces the number of times the pressure bar bolt is easily broken. The pressure bar bolt solves the problem of the pressure bar bolt being easy to break, but does not solve the problem that it is difficult to find after the pressure bar bolt breaks. Utility Model Content

[0005] The utility model aims to provide a pressure bar bolt device to solve the problem that it is difficult to find the pressure bar bolt after it breaks.

[0006] The pressure bar bolt device of the utility model adopts the following technical solutions:

[0007] A pressure bar bolt device comprises a screw rod, a hook head is provided at the lower end of the screw rod, a compression nut for compressing the pressure bar is installed on the screw rod, and a fracture warning device is arranged at the upper end of the screw rod, and the fracture warning device comprises an elastic body for being installed between the compression nut and the pressure bar.

[0008] Beneficial effect: The utility model improves the existing pressure bar bolt device. Specifically, the pressure bar bolt device of the utility model uses an elastic body, so that the pressure bar bolt can bounce up through the elastic body after breaking, so that the pressure bar bolt breakage can be found at the first time and replaced in time, solving the problem that it is difficult to find the pressure bar bolt breakage.

[0009] Furthermore, a visual indication layer is arranged on the outer peripheral surface of the elastomer.

[0010] Furthermore, the visual indication layer is a coating provided on the elastomer.

[0011] Furthermore, the elastic body is a coil spring, and a limiting support sleeve is installed in the coil spring, and the limiting support sleeve is used to limit the compression amount of the coil spring.

[0012] Furthermore, corresponding pads are respectively provided at both ends of the coil spring.

[0013] Furthermore, a limiting support sleeve is provided in the elastic body, and the limiting support sleeve is used to limit the compression amount of the elastic body.

[0014] Furthermore, a sealing plate is sleeved on the lower end of the pressure bar bolt, and the sealing plate is used to close the cement foundation connection hole.

[0015] Furthermore, a stabilizing sleeve is connected to the upper side of the sealing plate, and the stabilizing sleeve is used to prevent the sealing plate from tilting.

[0016] Furthermore, a sealing convex ring is provided at the lower end of the sealing plate, and a sealing ring is provided on the sealing convex ring for sealingly cooperating with the adapted cement foundation connection hole.

[0017] Furthermore, a reinforcing rib is provided between the lower end of the screw rod and the hook head. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the pressure bar bolt device of the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the structure of the middle sealing cover.

[0020] Numbers in the figure: 1. screw; 2. sealing cover; 201. straightening sleeve; 202. sealing plate; 203. sealing ring; 3. coil spring; 4. support tube; 5. groove; 6. reinforcing rib; 7. hook head; 8. first pad; 9. second pad; 10. locking nut; 11. gasket. DETAILED DESCRIPTION

[0021] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0022] Specific implementation of the pressure bar bolt device of the utility model:

[0023] The prior art discloses a pressure bar bolt, which is made stronger by symmetrically welding a reinforcing support plate at the junction of the straightening block and the screw rod, and changing the force concentration point from the original junction of the straightening block and the screw rod to the support force on both sides. However, it does not solve the problem that it is difficult to find the pressure bar bolt after it breaks. The utility model proposes a solution to the shortcomings of the prior art. The core idea of ​​the solution is to set an elastic body so that the pressure bar bolt can bounce up after it breaks, so that the break of the pressure bar bolt can be found at the first time, and then corresponding measures can be taken.

[0024] Based on the above concept, Figure 1 As shown, the pressure bar bolt device of the utility model includes a screw rod 1, a hook head 7 is provided at the lower end of the screw rod 1, a clamping nut 10 for clamping the pressure bar is installed on the screw rod 1, and a fracture warning device is provided at the upper end of the screw rod 1. The fracture warning device includes an elastomer for top installation between the clamping nut 10 and the pressure bar. In this embodiment, the elastomer is a coil spring 3, and in other embodiments, it can also be a rubber elastomer.

[0025] Among the above components, Figure 1 As shown, a limited support sleeve is installed in the coil spring 3 to prevent the coil spring 3 from being compressed too tightly and losing its elasticity. In this embodiment, the limited support sleeve is a support tube 4. There are two pads on the upper and lower sides of the coil spring 3, namely the first pad 8 and the second pad 9. A washer 11 is sleeved on the first pad 8, which cooperates with the clamping nut 10 to clamp the coil spring 3. Once the pressure bar bolt breaks, the coil spring 3 will bounce up with the pressure bar bolt, so that the pressure bar bolt break can be found at the first time, and then corresponding treatment measures can be taken. A visual indication layer is provided on the outer peripheral surface of the coil spring 3, and the visual indication layer is a coating provided on the coil spring 3. In this embodiment, white paint is sprayed on the coil spring 3 for significantly identifying the coil spring 3. In other embodiments, fluorescent materials can also be used instead of white paint, as long as the coil spring 3 can be significantly identified. In this embodiment, the visual indication layer is formed by spraying the coating to form the visual indication layer. In other embodiments, the visual indication layer can also be formed by pasting a colored layer.

[0026] like Figure 1 , Figure 2 As shown, the sealing cover 2 is composed of a straightening sleeve 201, a sealing plate 202 and a sealing ring 203. The sealing plate 202 is sleeved on the lower end of the pressure bar bolt to close the cement foundation connection hole. The straightening sleeve 201 is connected to the upper side of the sealing plate 202 to prevent the sealing plate 202 from tilting. A sealing convex ring is provided at the lower end of the sealing plate 202, and a sealing ring 203 is provided on the sealing convex ring for sealing with the adapted cement foundation connection hole. The straightening sleeve 201, the sealing plate 202 and the sealing ring 203 are integrated, and the sealing plate 202 is provided with a hole, the inner diameter of which is the same as the inner diameter of the straightening sleeve 201, and the inner diameter of the straightening sleeve 201 is larger than the outer diameter of the screw 1 to adapt to the screw 1 and be sleeved on the screw 1. The sealing cover 2 is used to seal the cement foundation connection hole to prevent water and sediment from being deposited in the cement foundation connection hole, causing the hanging plate to corrode and rust. The sealing plate 202 is made of stainless steel, and in other embodiments, aluminum alloy and nickel alloy can also be used.

[0027] A groove 5 is provided at the top of the screw rod 1, and the direction of the groove 5 is consistent with the direction of the hook head 7 to prevent the hook head 7 from being blindly hung in the cement foundation connection hole. Preferably, the depth of the groove 5 is 2 mm. A hanging plate is prefabricated in the cement foundation connection hole, and a rectangular through groove is provided on the hanging plate that penetrates the hanging plate. The pressure bar bolt is lowered into the cement foundation connection hole, and the pressure bar bolt is rotated to make the groove 5 perpendicular to the hanging plate so that the hook head 7 is hung correctly, thereby preventing the pressure bar bolt from loosening due to mishanging.

[0028] A reinforcing rib 6 is provided between the lower end of the screw rod 1 and the hook head 7 to enhance the tightness of the pressure bar bolt. The reinforcing rib 6 is located above the hook head 7 and is connected to the hook head 7 by welding on both sides of the hook head 7. In this embodiment, the reinforcing rib 6 is a pair of cylindrical iron blocks, and in other embodiments, it can also be a stainless steel block or a lead block, as long as it can enhance the tightness of the pressure bar bolt.

[0029] The method of using the pressure bar bolt device of the utility model is as follows:

[0030] The sealing cover 2 is inserted into the screw 1, and the screw 1 is inserted into the cement foundation connection hole and the pressure bar connection hole, so that the hook head 7 of the pressure bar bolt passes through the rectangular through slot of the hanging plate, and the screw 1 is rotated to make the groove 5 perpendicular to the hanging plate to ensure that the hook head 7 is hung straight. Then, the second pad 9, the support tube 4, the coil spring 3, the first pad 8 and the gasket 11 are installed in sequence at the pressure bar connection hole, and finally the compression nut 10 is inserted and tightened to complete the installation.

Claims

1. A pressure bar bolt device, comprising a screw rod, a hook head is provided at the lower end of the screw rod, and a compression nut for compressing the pressure bar is installed on the screw rod, characterized in that: A fracture warning device is arranged at the upper end of the screw rod, and the fracture warning device comprises an elastic body used for being mounted between the clamping nut and the pressure bar.

2. The pressure bar bolt device according to claim 1, characterized in that: A visual indication layer is arranged on the peripheral surface of the elastic body.

3. The pressure bar bolt device according to claim 2, characterized in that: The visual indication layer is a coating disposed on the elastomer.

4. The pressure bar bolt device according to claim 1, 2 or 3, characterized in that: The elastic body is a coil spring, and a limiting support sleeve is installed in the coil spring. The limiting support sleeve is used to limit the compression amount of the coil spring.

5. The pressure bar bolt device according to claim 4, characterized in that: Corresponding pads are respectively arranged at both ends of the coil spring.

6. The pressure bar bolt device according to claim 1, characterized in that: A limiting support sleeve is arranged in the elastic body, and the limiting support sleeve is used to limit the compression amount of the elastic body.

7. The pressure bar bolt device according to claim 1 or 2 or 3 or 5 or 6, characterized in that: A sealing plate is sleeved on the lower end of the pressure bar bolt, and the sealing plate is used to seal the cement foundation connection hole.

8. The pressure bar bolt device according to claim 7, characterized in that: The upper side of the sealing plate is connected with a straightening sleeve, which is used to prevent the sealing plate from tilting.

9. The pressure bar bolt device according to claim 7, characterized in that: A sealing convex ring is arranged at the lower end of the sealing plate, and a sealing ring is arranged on the sealing convex ring for sealingly cooperating with the adapted cement foundation connection hole.

10. The pressure bar bolt device according to claim 1 or 2 or 3 or 5 or 6, characterized in that: A reinforcing rib is arranged between the lower end of the screw rod and the hook head.

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