Power tong torque testing device
By designing a compact power clamp torque testing device and using a weighing sensor and a sensor for data acquisition, the problems of large size, complex operation, and high cost of existing equipment have been solved. This device enables portable, simple, and low-cost power clamp torque testing, and is suitable for testing various specifications of power clamps in oilfields.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 上海诺辉工程科技发展有限公司
- Filing Date
- 2026-04-08
- Publication Date
- 2026-05-29
AI Technical Summary
Existing power clamp torque testing equipment is bulky, inconvenient to transport, complex to operate, and costly, making it difficult to meet the needs of rapid and convenient on-site testing in oil fields, and its testing accuracy is insufficient.
A power clamp torque testing device was designed, consisting of a base, a clamp test bracket, a force measuring component, and a display component. It uses a weighing sensor and temperature and pressure sensors for data acquisition, simplifies the operation process, reduces the professional skill requirements, and has a compact and portable structure. It also uses conventional components to reduce costs.
It achieves portability and ease of operation for torque testing of power clamps, reduces the operating threshold and production cost, improves testing accuracy and applicability, and is suitable for on-site testing of various specifications of power clamps.
Smart Images

Figure CN122108416A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of power clamp testing technology, specifically a power clamp torque testing device. Background Technology
[0002] In field operations such as oil extraction and well workover in oil and gas fields, power tongs are the core tool for connecting and disassembling well tubing. The stability of their torque output is directly related to the quality of tubing connection and operational safety. Regular on-site testing of their torque performance is necessary to avoid safety accidents caused by abnormal torque due to equipment aging or wear.
[0003] Current power clamp torque testing equipment in the industry suffers from several shortcomings in adapting to field operations: Firstly, traditional testing devices are mostly fixed, large-scale equipment with complex structures, large sizes, and heavy weights, lacking portability and making it difficult to transport to field scenarios such as oilfields for testing. Testing can only be completed in laboratories or workshops, resulting in the inability to verify performance on-site promptly after equipment maintenance, impacting operational efficiency. Secondly, existing equipment has complex manufacturing processes and numerous parts, leading to high production costs and cumbersome operating procedures, requiring highly skilled testing personnel. Oilfield field operators often need to complete testing quickly, and complex operations are ill-suited to the demands of efficient on-site operations. Furthermore, some less portable devices suffer from insufficient testing accuracy and inconvenient data reading, further limiting their widespread application in field operations.
[0004] To address the pain points of existing testing equipment, such as large size, inconvenience in transportation, complex operation, and high cost, and to meet the demand for rapid and convenient torque testing of power clamps in scenarios such as oilfields, it is urgent to develop a power clamp torque testing device that is simple in structure, convenient and practical, compact in size and portable, has a low operating threshold, and is inexpensive. Summary of the Invention
[0005] The purpose of this invention is to provide a power clamp torque testing device to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a power clamp torque testing device, comprising a base, a clamp body testing bracket, a force measuring component, and a display component, wherein the clamp body testing bracket is disposed on the base, the force measuring component is disposed on one side of the upper end of the base, and the display component is disposed on the force measuring component.
[0007] Preferably, the base is provided with a support column, the force measuring component includes an outer tube and an inner tube and a weighing sensor disposed between the outer tube and the inner tube, the inner tube is movably disposed inside the outer tube, one end of the outer tube is connected to the support column, and the end of the inner tube away from the outer tube is provided with a bayonet.
[0008] Preferably, the outer tube is provided with a first protrusion, the inner tube is provided with a second protrusion, and the weighing sensor is located between the first protrusion and the second protrusion.
[0009] Preferably, the support column is located at the end corner of the base, and baffles are provided on both sides of the support column, with the baffles extending along the two adjacent edges of the base.
[0010] Preferably, the outer wall of the baffle is provided with an electrical cabinet, and a control switch is provided at one end of the base and the support diagonally opposite each other, and the control switch is electrically connected to the electrical cabinet.
[0011] Preferably, the display component includes a display and control buttons, the control buttons being located on the display, and the display being connected to the top of the support column via a wall mount.
[0012] Preferably, the baffle is further provided with a first pipe and a second pipe, the first pipe being provided with a temperature sensor and the second pipe being provided with a pressure sensor.
[0013] Compared with existing technologies, the advantages of this invention are as follows: The invention has a simple and compact structure, consisting only of core components such as a base, clamp test bracket, force measuring component, and display component, along with a few auxiliary parts. It is small in size and light in weight, making it easy to transport to oilfield sites and other on-site testing, offering high flexibility. The operation process is simple: just fix the power clamp, connect the bayonet, and turn on the control switch to intuitively obtain torque data through the display. The control button can also set torque thresholds, lowering the operational threshold and professional skill requirements. Manufacturing costs are low, using conventional and universal components, simplifying manufacturing and assembly processes, resulting in high cost-effectiveness and easy industry promotion. Testing is accurate and reliable: the force measuring component positions the weighing sensor through protrusions, ensuring accurate pressure signal acquisition. Combined with temperature and pressure sensors, it provides comprehensive test data. The stable base and baffle structure prevent testing wobbling and is compatible with various specifications of power clamps, further enhancing the practicality and applicability of the device. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3 This is a schematic diagram of the force measuring component structure of the present invention.
[0015] In the diagram: 1. Base; 11. Support column; 12. Baffle; 13. Electrical cabinet; 14. Control switch; 15. First pipe; 16. Second pipe; 17. Temperature sensor; 18. Pressure sensor; 2. Clamp test bracket; 3. Force measuring component; 31. Outer tube; 32. Inner tube; 33. Weighing sensor; 34. Bayonet; 35. First protrusion; 36. Second protrusion; 4. Display component; 41. Display; 42. Control button; 43. Hanging arm. Detailed Implementation
[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0017] Please see Figures 1 to 3 The present invention provides a technical solution: a power clamp torque testing device, including a base 1, a clamp body testing bracket 2, a force measuring component 3 and a display component 4, wherein the clamp body testing bracket is disposed on the base, the force measuring component is disposed on one side of the upper end of the base, and the display component is disposed on the force measuring component.
[0018] In one embodiment of the present invention, the base 1 is provided with a support column 11, the force measuring component includes an outer tube 31 and an inner tube 32 and a weighing sensor 33 disposed between the outer tube and the inner tube, the inner tube 32 is movably disposed inside the outer tube 31, one end of the outer tube 31 is connected to the support column 11, and the end of the inner tube 32 away from the outer tube 31 is provided with a bayonet 34.
[0019] In one embodiment of the present invention, the outer tube 31 is provided with a first protrusion 35, the inner tube 32 is provided with a second protrusion 36, and the weighing sensor 33 is disposed between the first protrusion 35 and the second protrusion 36. One side of the weighing sensor 33 protrudes slightly from the opening of the outer tube 31, which makes it easier to press the weighing sensor 33 when the inner tube 32 moves into the outer tube 31.
[0020] In one embodiment of the present invention, the support column 11 is disposed at one end corner of the base 1, and baffles 12 are provided on both sides of the support column, extending along the two adjacent edges of the base. The baffles 12 are arranged in a fan shape, and their right-angled sides are respectively connected to the edges of the support column and the base.
[0021] In one embodiment of the present invention, an electrical cabinet 13 is provided on the outer wall of the baffle 12, and a control switch 14 is provided at one diagonally opposite end of the base 1 and the support column 11. The control switch 14 is electrically connected to the electrical cabinet. The control switch is used to control the power clamp 100 to be tested.
[0022] In one embodiment of the present invention, the display component includes a display 41 and control buttons 42, the control buttons 42 being disposed on the display 41, and the display 41 being connected to the top of the support column 11 via a wall mount 43. The display contains only a PLC module, and the threshold value for the test torque can be set via the control buttons.
[0023] In one embodiment of the present invention, the baffle 12 is further provided with a first pipe 15 and a second pipe 16, the first pipe 15 is provided with a temperature sensor 17, and the second pipe 16 is provided with a pressure sensor 18.
[0024] In an embodiment of the present invention, during testing, the power clamp 100 is placed on the clamp body test bracket 2, so that the jaw end of the power clamp is fixed to the front test bracket 2, and the arm of the power clamp is connected to the bayonet 34 of the inner tube. The power clamp is started by the control switch 14. Since the power clamp and the clamp body test bracket 2 are fixed, and the clamp body test bracket 2 is fixed to the base, the power clamp drives the clamp arm to rotate and apply pressure to the inner tube. The inner tube moves into the outer tube and then presses the weighing sensor 33. The weighing sensor 33 transmits the obtained pressure value to the display for display. The tester reads the displayed value to determine whether the torque value of the power clamp meets the requirements.
[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A torque testing device for a power clamp, characterized in that, It includes a base, a clamp test bracket, a force measuring component, and a display component. The clamp test bracket is mounted on the base, the force measuring component is located on one side of the upper end of the base, and the display component is mounted on the force measuring component.
2. The torque testing device for a power clamp according to claim 1, characterized in that: The base is provided with a support column, and the force measuring component includes an outer tube and an inner tube, as well as a weighing sensor disposed between the outer tube and the inner tube. The inner tube is movably disposed inside the outer tube, one end of the outer tube is connected to the support column, and the end of the inner tube away from the outer tube is provided with a bayonet.
3. The torque testing device for a power clamp according to claim 2, characterized in that: The outer tube is provided with a first protrusion, the inner tube is provided with a second protrusion, and the weighing sensor is located between the first protrusion and the second protrusion.
4. The torque testing device for a power clamp according to claim 3, characterized in that: The support column is located at the end corner of the base, and baffles are provided on both sides of the support column, with the baffles extending along the two adjacent edges of the base.
5. The torque testing device for a power clamp according to claim 4, characterized in that: An electrical cabinet is provided on the outer wall of the baffle, and a control switch is provided at one end of the base and the support diagonally opposite each other. The control switch is electrically connected to the electrical cabinet.
6. The torque testing device for a power clamp according to claim 5, characterized in that: The display component includes a display and control buttons, the control buttons being located on the display, and the display being connected to the top of the support column via a wall mount.
7. The torque testing device for a power clamp according to claim 6, characterized in that: The baffle is also provided with a first pipe and a second pipe, the first pipe being provided with a temperature sensor and the second pipe being provided with a pressure sensor.