Torque tightening device for fan shaft head nut

Abstract

The invention discloses a fan shaft head nut torque tightening device, and relates to the technical field of mine truck ventilation cooling device assembling, the fan shaft head nut torque tightening device comprises a fan, an impeller is arranged in the fan, a shaft head nut is arranged at one end of an output shaft of the impeller, the bottom of the sleeve frame is arranged at the top of the shaft head nut, and a lower side fixing frame is arranged at the top of the sleeve frame; the bottom of the lower side fixing frame is connected with the impeller core; a fixing shaft sleeve is arranged in the lower side fixing frame, a through hole is formed in the fixing shaft sleeve in a penetrating mode in the radial direction, and the sleeve frame sequentially penetrates through the lower side fixing frame and the fixing shaft sleeve through the through hole. An upper fixing frame is arranged at the top of the lower fixing frame, and a handle is arranged at the rear end of the upper fixing frame; a torque locking device is arranged on the top of the sleeve frame. According to the device, the assembling time of the shaft head nut is effectively shortened, the assembling difficulty is reduced, it is ensured that the shaft head nut can be locked and assembled according to the set torque, and the assembling accuracy and reliability of the impeller and the shaft head nut are effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mining vehicle ventilation and cooling device assembly, in particular to a fan shaft head nut torque tightening device. Background Art

[0002] Mining vehicles usually work in very harsh environments such as high temperature, high dust, and high load, and the engine generates a lot of heat. If the heat cannot be dissipated in time, the engine temperature will be too high, affecting its performance, and even causing failure or damage. By installing a ventilation cooling device in the vehicle, the engine can dissipate heat, keep it working within the appropriate temperature range, and ensure the stability and durability of the engine.

[0003] In the related art, after the fan impeller of the mining vehicle ventilation and cooling device is press-fitted, the shaft head nut needs to be locked with an air gun during the assembly process to tighten the impeller core and the shaft head nut. The air gun is pneumatically driven, has a fast rotation speed and high assembly efficiency, but cannot guarantee the precise installation torque of the impeller core and the shaft head nut, which will cause the ventilation and cooling device to be assembled too loose or too tight, causing stress concentration, performance degradation, vibration and noise and other problems. Therefore, there is an urgent need for a tightening device for the fan shaft head nut to effectively control the impeller core and the shaft head nut to be tightened and assembled according to the set torque, so as to improve assembly accuracy and product quality. Summary of the invention

[0004] The object of the present invention is to provide a torque tightening device for a fan shaft head nut to solve at least one aspect of the problems and defects raised in the above-mentioned background technology.

[0005] Specifically, the present invention discloses a torque tightening device for a shaft head nut of a fan, comprising a fan, an impeller is arranged in the fan, a shaft head nut is arranged at one end of an output shaft of the impeller, and further comprising:

[0006] A sleeve frame, wherein the bottom of the sleeve frame is arranged on the top of the shaft head nut, the top of the sleeve frame is provided with a lower fixing frame, and the bottom of the lower fixing frame is connected to the impeller core;

[0007] A fixed sleeve is arranged in the lower fixing frame, a through hole is arranged radially through the fixed sleeve, and the sleeve frame is sequentially arranged on the lower fixing frame and the fixed sleeve through the through hole;

[0008] An upper fixing frame is arranged on the top of the lower fixing frame, and a handle is arranged at the rear end of the upper fixing frame;

[0009] A torque locking device is arranged on the top of the sleeve frame.

[0010] According to the technical solution of the present invention, there are at least the following beneficial effects:

[0011] The fan shaft head nut torque tightening device is installed on the impeller core of the fan, and the operator can use the handle to position and fix the impeller more conveniently, and use the torque locking device to lock and assemble the impeller and the shaft head nut, which effectively reduces the assembly time and difficulty of the shaft head nut, ensures that the shaft head nut can be locked and assembled according to the set torque, avoids the pneumatic driving tightening of the air gun causing the shaft head nut torque to be unable to be accurately controlled, and effectively improves the accuracy and reliability of the assembly of the impeller and the shaft head nut, thereby ensuring product quality;

[0012] The fan shaft head nut torque tightening device has a simple structure and is easy to disassemble and assemble, and is convenient for maintenance and adjustment. The model corresponding to the shaft head nut size can be replaced as needed to adapt to the shaft head nuts of fans of different sizes or types. The torque value can be set through the torque locking device to meet the installation torque requirements of different shaft head nuts, effectively improving the versatility and operational flexibility of the device.

[0013] As a further solution of the present invention: the lower fixing frame is provided with an internal thread, the fixed shaft sleeve is provided with an external thread, and the lower fixing frame is threadedly connected to the fixed shaft sleeve.

[0014] Since the lower fixing frame is provided with an internal thread and the fixed sleeve is provided with an external thread, the lower fixing frame and the fixed sleeve are threadedly connected, which can effectively improve the connection stability between the lower fixing frame and the fixed sleeve, and prevent the device from loosening between the fixed sleeve and the lower fixing frame during use, thereby affecting the accuracy of the locking torque of the shaft head nut and the impeller core, ensuring the best fit and force transmission, so that the shaft head nut can be locked and assembled according to the set torque, and improving the assembly accuracy.

[0015] As a further solution of the present invention: an observation hole is provided at the bottom of the side wall of the lower fixing frame.

[0016] By setting an observation hole at the bottom of the side wall of the lower fixing frame, it is possible to check through the observation hole whether the thread of the fixed sleeve is screwed into place, and during use, the relative position of the fixed sleeve and the lower fixing frame can be observed in real time to avoid displacement of the fixed sleeve and the lower fixing frame, which affects the accuracy of the locking torque. The threaded screw-in position of the fixed sleeve can be adjusted as needed through observation to ensure the position stability and accuracy of the fixed sleeve, thereby improving the accuracy of the locking torque of the shaft head nut.

[0017] As a further solution of the present invention: connecting ears are respectively arranged on both sides of the top of the lower fixing frame, and a threaded hole is arranged in the middle of the connecting ears.

[0018] As a further solution of the present invention: threaded blind holes are arranged at the bottoms of both sides of the upper fixing frame, and the lower fixing frame is connected to the upper fixing frame by nuts.

[0019] Since connecting ears are respectively arranged on both sides of the top of the lower fixing frame, and a threaded hole is arranged in the middle of the connecting ear; threaded blind holes are arranged on the bottom of both sides of the upper fixing frame, and the lower fixing frame is connected to the upper fixing frame by nuts, the upper fixing frame and the lower fixing frame can be effectively and stably connected, and the installation error can be reduced, thereby improving the installation accuracy and consistency of the upper fixing frame and the lower fixing frame.

[0020] As a further solution of the present invention: an arc-shaped recess is provided at the front end of the upper fixing frame, and the top of the fixing sleeve is engaged in the arc-shaped recess.

[0021] Since an arc-shaped recess is provided at the front end of the upper fixing frame and the top of the fixed sleeve is engaged in the arc-shaped recess, when the torque locking device is rotated to tighten the shaft head nut, by holding the handle at the rear end of the upper fixing frame, the arc-shaped recess at the front end of the upper fixing frame can generate a reaction force on the fixed sleeve, thereby preventing the fixed sleeve and the torque locking device from rotating at the same time, and effectively preventing the fixed sleeve from sliding or displacing, so that the shaft head nut can be accurately locked and assembled with the impeller core according to the set torque, thereby improving the stability and accuracy of the assembly.

[0022] As a further solution of the present invention: a threaded hole is provided at the rear end of the upper fixing frame, an external thread is provided at the top of the handle, and the handle is threadedly connected to the upper fixing frame.

[0023] By arranging a threaded hole at the rear end of the upper fixing frame and an external thread on the top of the handle, the handle is threadedly connected to the upper fixing frame, which can facilitate the disassembly and connection of the handle and the upper fixing frame, and the handle can be replaced or repaired as needed, thereby improving the flexibility and convenience of operation.

[0024] As a further solution of the present invention: the torque locking device is a torque bearing or a torque wrench.

[0025] Since the torque locking device is a torque bearing or a torque wrench, after setting the torque parameters for the torque bearing or the torque wrench, the torque bearing or the torque wrench is rotated, and the sleeve frame is driven to rotate, thereby driving the shaft head nut to rotate, so that the shaft head nut can be accurately locked and assembled with the impeller core according to the set torque, and the torque bearing or the torque wrench is easy to operate, so that the operator can accurately control the torque during the tightening process of the shaft head nut, thereby improving the accuracy and reliability of assembly.

[0026] As a further solution of the present invention: the torque locking device is an inner and outer sleeve structure.

[0027] Since the torque locking device is an inner and outer sleeve structure, the outer sleeve can be extended and retracted along the inner sleeve. The torque locking device can be extended as needed to ensure that a torque locking device of appropriate length is used for the shaft head nut assembly of different types of fans, thereby better controlling the set torque and achieving precise control of the shaft head nut locking torque.

[0028] As a further solution of the present invention: the length of the torque locking device is 30cm-60cm.

[0029] Since the length of the torque locking device is 30cm-60cm, the length of the torque locking device can be adjusted according to operational needs to meet the tightening requirements of the shaft head nuts of different types of fans. The lever principle is used to reduce the operational difficulty of rotating the torque locking device, reduce manual labor intensity, and effectively improve operational comfort and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0031] Figure 1 It is a structural schematic diagram of a torque tightening device for a fan shaft head nut;

[0032] Figure 2 The present invention is a schematic diagram of the fan impeller and wheel core structure of a fan shaft head nut torque tightening device.

[0033] Reference numerals:

[0034] 101. Fan; 102. Impeller; 103. Shaft nut; 104. Sleeve holder; 105. Lower fixing frame; 106. Fixed sleeve; 107. Through hole; 108. Upper fixing frame; 109. Handle; 110. Torque locking device; 111. Observation hole; 112. Connecting ear; 113. Threaded hole; 114. Arc-shaped recess. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the technical solution of the present invention is further specifically described below by way of examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation of the present invention.

[0036] In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

[0037] like Figure 1 and Figure 2 The embodiment of the present invention is shown as a torque tightening device for a shaft head nut of a fan, comprising a fan 101, an impeller 102 is arranged in the fan 101, a shaft head nut 103 is arranged at one end of the output shaft of the impeller 102, and also comprises: a sleeve frame 104, the bottom of the sleeve frame 104 is arranged on the top of the shaft head nut 103, the top of the sleeve frame 104 is provided with a lower side fixing frame 105, and the bottom of the lower side fixing frame 105 is connected to the wheel core of the impeller 102; a fixed shaft sleeve 106 is arranged in the lower side fixing frame 105, and a through hole 107 is arranged radially through the fixed shaft sleeve 106, and the sleeve frame 104 is sequentially penetrated by the lower side fixing frame 105 and the fixed shaft sleeve 106 through the through hole 107; an upper side fixing frame 108 is arranged on the top of the lower side fixing frame 105, and a handle 109 is arranged at the rear end of the upper side fixing frame 108; a torque locking device 110 is arranged on the top of the sleeve frame 104.

[0038] When in use, first pre-tighten the shaft head nut 103 and the wheel core of the impeller 102, install one end of the sleeve frame 104 on the shaft head nut 103, and then screw the fixed shaft sleeve 106 into the lower side fixing frame 105, pass the lower side fixing frame 105 and the fixed shaft sleeve 106 through the sleeve frame 104, and install them on the wheel core of the impeller 102, so that the wheel core of the impeller 102 is tightly connected with the lower side fixing frame 105; install the upper side fixing frame 108 on the lower side fixing frame 104, and install the handle 109 on the rear end of the upper side fixing frame 108, the sleeve frame 1 passes through the through hole 107 of the lower side fixing frame 105 and the fixed shaft sleeve 106 and is connected with the torque locking device 110. After the installation is completed, the impeller 102 can be fixed by the handle 109, and the torque locking device 110 is adjusted to the required set torque value, and the sleeve frame 104 is driven to tighten the shaft head nut 103 according to the set torque for assembly.

[0039] Specifically, the fan shaft head nut torque tightening device is installed on the impeller 102 wheel core of the fan 101, and the handle 109 is used to enable the operator to more conveniently position and fix the impeller 102, and the torque locking device 110 is used to lock and assemble the impeller 102 and the shaft head nut 103, which effectively reduces the assembly time of the shaft head nut 103 and reduces the assembly difficulty, ensuring that the shaft head nut 103 can be locked and assembled according to the set torque, avoiding the torque of the shaft head nut 103 cannot be accurately controlled due to the pneumatic driving tightening of the air gun, and effectively improving the accuracy and reliability of the assembly of the impeller 102 and the shaft head nut 103, thereby ensuring product quality;

[0040] The fan shaft head nut torque tightening device has a simple structure and is easy to disassemble and assemble, and is convenient for maintenance and adjustment. The model corresponding to the size of the shaft head nut 103 can be replaced as needed to adapt to the shaft head nuts 103 of fans 101 of different sizes or types. The torque value can be set through the torque locking device 110 to meet the installation torque requirements of different shaft head nuts 103, effectively improving the versatility and operational flexibility of the device.

[0041] Furthermore, the lower fixing frame 105 is provided with an internal thread, the fixing sleeve 106 is provided with an external thread, and the lower fixing frame 105 and the fixing sleeve 106 are threadedly connected.

[0042] Specifically, since the lower fixing frame 105 is provided with an internal thread and the fixed sleeve 106 is provided with an external thread, the lower fixing frame 105 and the fixed sleeve 106 are threadedly connected, which can effectively improve the connection stability between the lower fixing frame 105 and the fixed sleeve 106, and prevent the fixed sleeve 106 and the lower fixing frame 105 from loosening during use, thereby affecting the accuracy of the locking torque between the shaft head nut 103 and the impeller 102 core, ensuring the best fit and force transmission, so that the shaft head nut 103 can be locked and assembled according to the set torque, thereby improving the assembly accuracy.

[0043] Furthermore, if Figure 1 As shown, an observation hole 111 is provided at the bottom of the side wall of the lower fixing frame 105 .

[0044] Specifically, by setting an observation hole 111 at the bottom of the side wall of the lower fixing frame 105, it is possible to check through the observation hole 111 whether the thread of the fixed sleeve 106 is screwed into place, and during use, the relative position of the fixed sleeve 106 and the lower fixing frame 105 can be observed in real time to avoid displacement of the fixed sleeve 106 and the lower fixing frame 105, which would affect the accuracy of the locking torque. The threaded position of the fixed sleeve 106 can be adjusted as needed through observation to ensure the position stability and accuracy of the fixed sleeve 106, thereby improving the accuracy of the locking torque of the shaft head nut 103.

[0045] like Figure 1 As shown, connecting ears 112 are respectively provided on both sides of the top of the lower fixing frame 105, and a threaded hole 113 is provided in the middle of the connecting ear 112; threaded blind holes are provided on the bottom of both sides of the upper fixing frame 108, and the lower fixing frame 105 is connected to the upper fixing frame 108 by nuts.

[0046] Specifically, since connecting ears 112 are respectively provided on both sides of the top of the lower fixing frame 105, and a threaded hole 113 is provided in the middle of the connecting ear 112; threaded blind holes are provided on the bottom of both sides of the upper fixing frame 108, the lower fixing frame 105 and the upper fixing frame 108 are connected by nuts, the upper fixing frame 105 and the lower fixing frame 108 can be effectively and stably connected, and the installation error can be reduced, thereby improving the installation accuracy and consistency of the upper fixing frame 105 and the lower fixing frame 108.

[0047] Furthermore, if Figure 1 As shown, an arc-shaped recess 114 is provided at the front end of the upper fixing frame 108 , and the top of the fixing sleeve 106 is engaged in the arc-shaped recess 114 .

[0048] Specifically, since an arc-shaped recess 114 is provided at the front end of the upper fixing frame 108, the top of the fixed sleeve 106 is engaged in the arc-shaped recess 114. When the torque locking device 110 is rotated to tighten the shaft head nut 103, by holding the handle 109 at the rear end of the upper fixing frame 108, the arc-shaped recess 114 at the front end of the upper fixing frame 108 can generate a reaction force on the fixed sleeve 106, thereby preventing the fixed sleeve 106 and the torque locking device 110 from rotating at the same time, and effectively preventing the fixed sleeve 106 from sliding or displacing, so that the shaft head nut 103 can be accurately locked and assembled with the impeller 102 wheel core according to the set torque, thereby improving the stability and accuracy of the assembly.

[0049] According to the embodiment of the present invention, a threaded hole is disposed at the rear end of the upper fixing frame 108 , an external thread is disposed at the top of the handle 109 , and the handle 109 is threadedly connected to the upper fixing frame 108 .

[0050] Specifically, by setting a threaded hole at the rear end of the upper fixing frame 108 and setting an external thread on the top of the handle 109, the handle 109 is threadedly connected to the upper fixing frame 108, which can facilitate the disassembly and connection of the handle 109 and the upper fixing frame 108, and the handle 109 can be replaced or repaired as needed, thereby improving the flexibility and convenience of operation.

[0051] According to an embodiment of the present invention, the torque locking device 110 is a torque bearing or a torque wrench.

[0052] Specifically, since the torque locking device 110 is a torque bearing or a torque wrench, after setting the torque parameters for the torque bearing or the torque wrench, the torque bearing or the torque wrench is rotated, and the sleeve frame 104 is driven to rotate, thereby driving the shaft head nut 103 to rotate, so that the shaft head nut 103 can be accurately locked and assembled with the impeller 102 core according to the set torque, and the torque bearing or torque wrench is easy to operate, so that the operator can accurately control the torque during the tightening process of the shaft head nut 103, thereby improving the accuracy and reliability of assembly.

[0053] Furthermore, the torque locking device 110 is an inner and outer sleeve structure.

[0054] Specifically, since the torque locking device 110 is an inner and outer sleeve structure, the outer sleeve can be extended and retracted along the inner sleeve. The torque locking device 110 can be extended as needed to ensure that a torque locking device 110 of appropriate length is used when assembling the shaft head nuts of different types of fans, thereby better controlling the set torque and achieving precise control of the locking torque of the shaft head nut 103.

[0055] Furthermore, the length of the torque locking device 110 is 30 cm-60 cm.

[0056] Specifically, since the length of the torque locking device 110 is 30cm-60cm, the length of the torque locking device 110 can be adjusted according to operational requirements to meet the tightening requirements of the shaft head nut 103 of different types of fans. The lever principle is used to reduce the operational difficulty of rotating the torque locking device 110, reduce manual labor intensity, and effectively improve operational comfort and efficiency.

[0057] It should also be noted that the torque parameter value of the fan shaft nut torque tightening device can be adjusted in the range of 50N·m-600N·m, which can adapt to the shaft nuts of various specifications of fan impeller cores. The operator can accurately adjust the torque according to specific needs to ensure that the installation of the shaft nut meets the fan impeller installation requirements, ensure the assembly accuracy and consistency of products of the same type, and effectively improve the assembly accuracy and product quality.

[0058] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fan shaft head nut torque tightening device, comprising a fan (101), wherein an impeller (102) is arranged in the fan (101), and a shaft head nut (103) is arranged at one end of the output shaft of the impeller (102), characterized in that: Also includes: A sleeve frame (104), the bottom of the sleeve frame (104) being arranged on the top of the shaft head nut (103), the top of the sleeve frame (104) being provided with a lower fixing frame (105), the bottom of the lower fixing frame (105) being connected to the wheel core of the impeller (102); A fixed shaft sleeve (106) is arranged inside the lower fixing frame (105), a through hole (107) is radially penetrated through the fixed shaft sleeve (106), and the sleeve frame (104) is sequentially penetrated through the lower fixing frame (105) and the fixed shaft sleeve (106) through the through hole (107); An upper fixing frame (108) is arranged on the top of the lower fixing frame (105), and a handle (109) is arranged at the rear end of the upper fixing frame (108); A torque locking device (110) is arranged on the top of the sleeve frame (104).

2. The fan shaft head nut torque tightening device according to claim 1, characterized in that: The lower fixing frame (105) is provided with an internal thread, the fixing sleeve (106) is provided with an external thread, and the lower fixing frame (105) and the fixing sleeve (106) are threadedly connected.

3. The fan shaft head nut torque tightening device according to claim 2, characterized in that: An observation hole (111) is provided at the bottom of the side wall of the lower fixing frame (105).

4. The fan shaft head nut torque tightening device according to claim 1, characterized in that: The top two sides of the lower fixing frame (105) are respectively provided with connecting ears (112), and the middle of the connecting ears (112) is provided with a threaded hole (113).

5. The fan shaft head nut torque tightening device according to claim 4, characterized in that: Threaded blind holes are provided at the bottoms of both sides of the upper fixing frame (108), and the lower fixing frame (105) is connected to the upper fixing frame (108) via nuts.

6. The fan shaft head nut torque tightening device according to claim 1, characterized in that: The front end of the upper fixing frame (108) is provided with an arc-shaped recess (114), and the top of the fixing sleeve (106) is engaged in the arc-shaped recess (114).

7. The fan shaft head nut torque tightening device according to claim 1, characterized in that: A threaded hole is provided at the rear end of the upper fixing frame (108), an external thread is provided at the top of the handle (109), and the handle (109) is threadedly connected to the upper fixing frame (108).

8. The fan shaft head nut torque tightening device according to any one of claims 1 to 7, characterized in that: The torque locking device (110) is a torque bearing or a torque wrench.

9. The fan shaft head nut torque tightening device according to claim 8, characterized in that: The torque locking device (110) is an inner and outer sleeve structure.

10. The fan shaft head nut torque tightening device according to claim 9, characterized in that: The length of the torque locking device (110) is 30 cm-60 cm.

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