Safety belt fixing device for overhauling pumping unit

Abstract

The safety belt fixing device comprises a hanging column and a hanging ring fixed on the hanging column, the lower end of the hanging column is connected with an inserting sleeve, one end of the inserting sleeve is open, the opening of the inserting sleeve faces downwards, and the inserting sleeve is used for being inserted on a belt pulley protective cover fixing column when in use. When in use, the plug-in mounting sleeve is mounted on a fixing column of the pumping unit belt pulley protective cover, and the device is simple in structure and convenient to mount.

Description

Technical Field

[0001] This utility model relates to the technical field of safety equipment for oilfield pumping units, and in particular to a safety belt fixing device for pumping unit maintenance. Background Technology

[0002] Currently, most oilfield pumping units in China are beam pumping units. These units consist of a gearbox and a pulley assembly. The pulley assembly includes pulleys and protective covers, which are welded to a fixed post. In most pumping unit maintenance and repair projects, such as disassembling the beams or installing counterweights, operators must climb onto the pumping unit's operating platform. The gearbox lacks a pre-installed safety belt mounting device, and operators often attach their safety belts to the exhaust valve, which is only 20mm high and does not meet the requirements for safety belt attachment. However, the pumping unit gearbox operating platform is more than 2 meters above the reference plane, requiring personnel to use safety belts and edge protection. Since the gearbox lacks a safety belt securing device, this poses safety risks and hazards to workers during maintenance and repair.

[0003] To address the aforementioned issues, Chinese utility model patent CN217582096U discloses an oil pumping unit, including a gearbox. The gearbox comprises a housing and a cover, which are fixed together by bolts extending from bottom to top. A safety belt suspension device is mounted on the bolts. The safety belt suspension device includes a suspension rod assembly, which comprises an inner fixing rod and an outer suspension sleeve. The bottom of the inner fixing rod has a threaded hole that is threaded onto the bolts. The suspension rod assembly has a suspension structure for suspending the safety belt. In use, this safety belt suspension device is fixed to the bolts of the gearbox, and its position does not move, ensuring that the safety belt is reliably suspended on the device, thus effectively protecting the safety of the workers. However, due to the short remaining thread length of the bolts, the installation method of connecting the inner fixing rod to the bolts and then fixing the outer suspension sleeve to the inner fixing rod with a set screw is complex. Utility Model Content

[0004] The purpose of this utility model is to provide a safety belt fixing device for oil pumping unit maintenance, so as to solve the problem of complex installation methods of safety belt suspension devices in the prior art.

[0005] To achieve the above objectives, the technical solution of the present invention for a safety belt fixing device for pumping unit maintenance is as follows: A safety belt fixing device for pumping unit maintenance includes a suspension column and a suspension ring fixed on the suspension column. The lower end of the suspension column is connected to an insert sleeve. One end of the insert sleeve is open and the sleeve opening faces downward. The insert sleeve is used to be inserted into the belt pulley guard fixing column during use.

[0006] Furthermore, the suspension column is vertically adjustable and connected to the insert sleeve.

[0007] Furthermore, the bottom of the insert sleeve is provided with a clearance hole, and an adjusting nut is fixed at the clearance hole. The lower end of the suspension column has an adjusting thread section. The suspension column passes through the clearance hole and engages with the adjusting nut through the adjusting thread section.

[0008] Furthermore, the adjusting nut is welded to the upper surface of the bottom of the cylinder.

[0009] Furthermore, the suspension column includes a suspension tube body welded together and a through thread screw, with the suspension ring fixed on the suspension tube body, and the external thread of the through thread screw forming the adjustment thread section.

[0010] Furthermore, a set screw is installed on the side wall of the insert sleeve, and the set screw is perpendicular to the central axis of the insert sleeve.

[0011] Furthermore, there are two or more top screws arranged vertically.

[0012] Furthermore, there are multiple suspension rings distributed vertically.

[0013] Furthermore, the suspension ring is a metal ring and is welded to the suspension column through the outer ring surface.

[0014] Furthermore, the suspension rings are distributed downwards from the top of the suspension column.

[0015] This utility model innovatively provides a safety belt fixing device for pumping unit maintenance. By installing an insert sleeve under the suspension column and fitting the insert sleeve onto the fixing column of the pumping unit pulley protective cover, the device can be fixed. This installation method is simpler than that of the prior art. Attached Figure Description

[0016] Figure 1 This is a front sectional view of the safety belt fixing device for oil pumping unit maintenance according to this utility model.

[0017] In the diagram: 1. Suspension rod; 11. Suspension ring; 12. Adjusting threaded section; 13. Suspension tube; 14. Through thread screw; 2. Insert sleeve; 21. Clearance hole; 22. Adjusting nut; 23. Set screw. Detailed Implementation

[0018] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0019] The purpose of this invention is to provide a safety belt fixing device for oil pumping unit maintenance, thereby solving the problem of complex installation methods for safety belt fixing devices. This invention's safety belt fixing device for oil pumping unit maintenance features a sleeve that can be installed on a fixing post on the protective cover of the oil pumping unit's pulley. It has a simple structure and is easy to install.

[0020] Based on the main concepts above, different embodiments are provided below for illustration.

[0021] In Example 1, as Figure 1 The safety belt fixing device for pumping unit maintenance includes a suspension column 1 and a suspension ring 11 fixed on the suspension column 1. The lower end of the suspension column 1 is connected to an insert sleeve 2. One end of the insert sleeve 2 is open and the opening faces downward. The insert sleeve 2 is used to insert into the pulley guard fixing column. Since the pulley guard fixing column is generally composed of DN32 or DN50 pipe, a 30 cm long DN65 pipe is cut as the insert sleeve 2, and a blind plate is welded to one end. A 1-meter long DN25 pipe is cut as the suspension column 1. The suspension column 1 is connected to the blind plate of the insert sleeve 2.

[0022] Based on the above embodiments, in one embodiment, the insert sleeve 2 is welded to the lower end of the suspension column 1. In a preferred embodiment, for ease of installation and adjustable seat belt height, the suspension column 1 is adjustablely connected to the insert sleeve 2. The bottom of the insert sleeve 2 has a clearance through hole with a diameter equal to the diameter of the suspension rod 1. The bottom of the suspension rod 1 near the insert sleeve 2 has multiple through holes of different heights perpendicular to the central axis of the suspension rod 1. The side wall of the insert sleeve 2 has a through hole perpendicular to the central axis of the insert sleeve 2, with the through hole and the through hole having the same diameter. A pin passes through the through hole and the through hole to fix the suspension rod 1 to the insert sleeve 2. The adjustable seat belt height can be achieved by adjusting the pin through the through holes of different heights.

[0023] In a preferred embodiment, to facilitate installation and make the seat belt more adjustable, the bottom of the insert sleeve 2 is provided with a clearance hole 21, and an adjusting nut 22 is fixed at the clearance hole 21. The diameter of the clearance hole 21 matches the size of the adjusting nut 22. The lower end of the suspension column 1 has an adjusting thread section 12. The suspension column 1 passes through the clearance hole 21 and is threadedly engaged with the adjusting nut 22 through the adjusting thread section 12. The suspension ring 11 can be moved up and down by rotating the adjusting thread section 12, thereby achieving the purpose of adjusting the seat belt up and down. Specifically, a 30 cm long through-threaded rod is welded to the end of the DN25 pipe near the blind plate, and a through hole matching the size of the nut is opened on the blind plate, and the nut is welded into the through hole.

[0024] In the above embodiments, the adjusting nut 22 is welded to the lower surface of the insert sleeve 2, away from the suspension column 1. In a preferred embodiment, for easier installation, the adjusting nut 22 is welded to the upper surface of the bottom of the insert sleeve 2. Figure 1 The suspension column 1 includes a suspension tube 13 welded together and a through thread screw 14. The suspension ring 11 is fixed on the suspension tube 13, and the external thread of the through thread screw 14 forms the adjusting thread section 12.

[0025] In the above embodiments, the insert sleeve 2 is directly inserted into the pulley guard fixing post. In a preferred embodiment, to make the insert sleeve 2 more securely installed, a set screw 23 is installed on the side wall of the insert sleeve 2, and the set screw 23 is perpendicular to the central axis of the insert sleeve 2. The insert sleeve 2 is inserted into the pulley guard fixing post, and then the set screw 23 is tightened. The set screw 23 makes the insert sleeve 2 press against the pulley guard fixing post, making the installation of the safety belt fixing device for pumping unit maintenance more secure and enhancing safety.

[0026] Based on the above embodiments, in one embodiment, only one set screw 23 is installed on the insert sleeve 2. In a preferred embodiment, to increase the safety of the device, there are two or more set screws 23 arranged vertically along the side wall of the insert sleeve 2.

[0027] Based on the above embodiments, in one embodiment, only one suspension ring 11 is fixed to the suspension column 1. In a preferred embodiment, to make the seat belt adjustable vertically, such as... Figure 1 The suspension rings 11 are distributed downwards from the top of the suspension column 1. There are multiple suspension rings 11, which are distributed vertically. When working at a slightly lower position, the lower suspension rings 11 can be hung, and when working at a slightly higher position, the upper suspension rings 11 can be hung. The suspension rings 11 are installed at 45 cm, 65 cm, and 80 cm on the DN25 pipe. The height can be adjusted by hanging the suspension rings 11 at different positions of 45 cm, 65 cm, and 80 cm with a safety belt.

[0028] In the above embodiments, the suspension ring 11 is a metal ring fixed to the suspension rod 1 by bolts. In a preferred embodiment, in order to prevent the bolts from loosening and affecting the safety of the operator, the suspension ring 11 is a metal ring and is welded to the suspension column 1 through the outer ring surface.

[0029] In principle, the insert sleeve of the safety belt fixing device for pumping unit maintenance needs to be fitted onto the fixing post of the pumping unit pulley guard. It is sufficient that the inner diameter of the insert sleeve is not less than the outer diameter of the fixing post of the pulley guard. Of course, preferably, the inner diameter of the sleeve can be designed to be exactly equal to the outer diameter of the fixing post of the pulley guard. This can maximize the contact area between the sleeve and the fixing post of the pulley guard and strengthen the load-bearing capacity.

[0030] This utility model's safety belt fixing device for pumping unit maintenance involves placing a sleeve onto the pumping unit's pulley guard fixing post, and then using a set screw to tighten the sleeve against the fixing post. Compared to existing safety belt fixing devices, this method is more convenient and simpler to install. Operators need to attach the safety belt to multiple safety belt suspension rings. The height of the safety rope can be adjusted by rotating the through-bolt screw according to the working height, or by attaching to safety belt suspension rings of different heights. This utility model adheres to the safety standard of high-hanging and low-use of the safety belt and performs well in installation work involving ground-based brakes.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A safety belt securing device for oil pumping unit maintenance, characterized in that, The suspension column is connected with the insertion sleeve at the lower end, and the insertion sleeve is open at one end and downward.

2. The safety belt restraint device for pumping unit repair as claimed in claim 1, wherein The suspension column is connected with the insertion sleeve at the lower end, and the insertion sleeve is open at one end and downward.

3. The safety belt restraint device for pumping unit service in accordance with claim 2, wherein, The bottom of the insertion sleeve is provided with an avoiding hole, and the avoiding hole is fixed with an adjusting nut.

4. The safety belt restraint device for pumping unit repair as claimed in claim 3, wherein The adjusting nut is welded on the upper surface of the bottom of the insertion sleeve.

5. The safety belt restraint device for pumping unit repair according to claim 3 or 4, characterized in that, The suspension column includes a suspension pipe body and a through-bolt screw, and the suspension ring is fixed on the suspension pipe body.

6. The safety belt restraint device for pumping unit repair as claimed in any one of claims 1 to 4, wherein The side wall of the insertion sleeve is provided with a jack screw, and the jack screw is perpendicular to the central axis of the insertion sleeve.

7. The safety belt restraint device for pumping unit service in accordance with claim 6, wherein, The jack screw has two or more than two and is arranged up and down.

8. The safety belt restraint device for pumping unit repair as claimed in any one of claims 1 to 4, wherein The suspension ring has multiple and is distributed up and down.

9. The safety belt restraint device for pumping unit repair as claimed in any one of claims 1 to 4, wherein The suspension ring is a metal ring and is welded with the suspension column through the outer ring surface.

10. The safety belt restraint device for pumping unit service in accordance with claim 8, wherein, The suspension ring is distributed downward from the top of the suspension column.

Images