Bolt cylindrical roller safety clutch

Abstract

The utility model discloses a bolt cylindrical roller safety clutch which comprises a clutch seat, a clutch shaft is arranged on the clutch seat in a penetrating mode, a pressure adjusting bolt, a pressure spring and a cylindrical roller are installed on the clutch seat, the pressure adjusting bolt is connected with the end of the pressure spring, and the other end of the pressure spring is connected with the cylindrical roller. The cylindrical rollers are located near the outer surface of the clutch shaft, and the two pressure adjusting bolts, the two pressure springs and the two cylindrical rollers are symmetrically distributed on the two sides of the clutch shaft. The bolt cylindrical roller safety clutch is simple in structure and convenient to use, and rotation of the clutch shaft can be adjusted by adjusting the pressure adjusting bolt.

Description

Technical Field

[0001] The utility model belongs to the technical field of clutches, and in particular relates to a bolt cylindrical roller safety clutch. Background Art

[0002] The clutch is widely used in various mechanical transmission systems. The clutch has the characteristics of large torque transmission, high power density, compact structure, and good dynamic stability, so that the clutch is widely used in occasions with high speed, high power, and high dynamic stability requirements. Especially in the starting process of vehicle equipment, the clutch plays a key role. Traditional clutches often have problems such as complex structure and difficult maintenance. Especially in friction clutches, the friction plate works under high temperature and high pressure environment, which leads to the smooth deterioration of the friction plate, and then affects the performance of the entire equipment. The existing clutch has problems such as complex structure, difficult maintenance, high cost, and high friction plate temperature during operation, which reduces the service life of the clutch. In the process of train cleaning, it is necessary to avoid excessive extrusion force of the brush stick of the faulty car washing machine on the train. Therefore, the design of the safety clutch can adjust the clutch force by the size of the spring force. When the extrusion force exceeds the clutch setting pressure, the clutch rotates 90° and the brush stick avoids the train, thereby avoiding damage to the train. It becomes more and more important. Utility Model Content

[0003] The purpose of the utility model is to solve the above problems and provide a bolt cylindrical roller safety clutch which has a simple structure, is easy to operate and can be adjusted at any time.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a bolt cylindrical roller safety clutch, including a clutch seat, a clutch shaft is passed through the clutch seat, and a pressure adjustment bolt, a pressure spring and a cylindrical roller are installed on the clutch seat. The pressure adjustment bolt is connected to the end of the pressure spring, and the other end of the pressure spring is connected to the cylindrical roller. The cylindrical roller is located near the outer surface of the clutch shaft. The number of the pressure adjustment bolt, pressure spring and cylindrical roller is two and is symmetrically distributed on both sides of the clutch shaft.

[0005] Preferably, the clutch seat includes a clutch seat body, the clutch seat body is a hollow cylindrical structure, both ends of the clutch seat body extend outward to form a clutch seat connecting column, the clutch seat connecting column is a hollow structure, the clutch shaft is passed through the clutch seat body, the pressure spring and the cylindrical roller are located in the clutch seat connecting column, the end of the pressure adjusting bolt extends into the clutch seat connecting column and is connected to the pressure spring, and the pressure adjusting bolt is threadedly connected to the clutch seat connecting column.

[0006] Preferably, the number of the clutch seat connecting columns is two and they are symmetrically distributed, a clutch seat connecting column nut is provided on the end face of the clutch seat connecting column, an external thread structure is provided on the pressure adjusting bolt, the pressure adjusting bolt is passed through the clutch seat connecting column nut and is threadedly connected.

[0007] Preferably, the clutch shaft is a stepped shaft structure, and the clutch shaft includes a first section of the clutch shaft, a second section of the clutch shaft and a third section of the clutch shaft which are fixedly connected in sequence, and the shaft diameters of the first section of the clutch shaft, the second section of the clutch shaft and the third section of the clutch shaft increase in sequence. A clutch shaft keyway is provided on the first section of the clutch shaft, and the clutch shaft keyway is an inwardly concave structure. A clutch shaft groove is provided on the third section of the clutch shaft, and the extension direction of the clutch shaft groove is parallel to the axis of the clutch shaft.

[0008] Preferably, the cross-section of the clutch shaft groove is similar to a "U"-shaped structure, the clutch shaft groove includes a clutch shaft groove bottom and a clutch shaft groove inclined portion, the cross-section of the clutch shaft groove bottom is "U"-shaped, the cross-section of the clutch shaft groove inclined portion is a trumpet-shaped structure, the top of the clutch shaft groove bottom is connected to the clutch shaft groove inclined portion, the number of clutch shaft grooves is four and they are symmetrically distributed on the outer surface of the third section of the clutch shaft.

[0009] Preferably, the end of the pressure adjusting bolt is connected to the end of the pressure spring, a pressure adjusting bolt baffle is installed at the end of the pressure adjusting bolt, and the pressure spring is located between the pressure adjusting bolt baffle and the cylindrical roller.

[0010] Preferably, the pressure spring is made of 60Si2Mn, the spring diameter d=8mm, the spring center diameter D=32mm, the spring pitch p=13mm, the spring effective number of turns n=5, the spring actual number of turns n1=7, the spring free height H=67.5mm, the spring helix angle 7.37°, and the spring unfolded length L=710mm.

[0011] Preferably, a cylindrical roller mounting sleeve is provided on the outer surface of the cylindrical roller. The cylindrical roller mounting sleeve is a rotating body structure. The end of the cylindrical roller mounting sleeve is connected to the end of the pressure spring. When the pressure spring is expanded and contracted, it drives the cylindrical roller mounting sleeve and the cylindrical roller to reciprocate.

[0012] The beneficial effects of the utility model are:

[0013] 1. The bolt cylindrical roller safety clutch provided by the utility model has a simple structure and is easy to use. The rotation of the clutch shaft can be adjusted by adjusting the pressure adjustment bolt.

[0014] 2. The utility model can be applied to multiple use environments by adjusting the force required for the clutch shaft to rotate, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a bolt cylindrical roller safety clutch of the utility model;

[0016] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the clutch shaft of the utility model;

[0018] Figure 4 It is a schematic diagram of the top view of the clutch shaft of the utility model;

[0019] Figure 5 This is a schematic diagram of a half-section structure of a pressure adjustment bolt baffle of the utility model;

[0020] Figure 6 It is a top view of the pressure adjustment bolt baffle of the utility model;

[0021] Figure 7 It is a structural schematic diagram of the cylindrical roller mounting sleeve of the utility model;

[0022] Figure 8 It is a cross-sectional structural diagram of the cylindrical roller mounting sleeve of the utility model;

[0023] Fig. 9 It is a schematic diagram of the top view of the cylindrical roller mounting sleeve of the utility model.

[0024] Explanation of the reference numerals in the accompanying drawings: 1. clutch seat; 2. clutch shaft; 3. pressure adjustment bolt; 4. pressure spring; 5. cylindrical roller; 10. clutch seat body; 11. clutch seat connecting column; 21. first section of clutch shaft; 22. second section of clutch shaft; 23. third section of clutch shaft; 51. cylindrical roller mounting sleeve; 52. cylindrical roller mounting sleeve groove; 111. clutch seat connecting column nut; 231. clutch shaft groove; 232. bottom of clutch shaft groove; 233. inclined portion of clutch shaft groove. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0026] like Figures 1 to 9As shown, the utility model provides a bolt cylindrical roller safety clutch, including a clutch seat 1, a clutch shaft 2 is passed through the clutch seat 1, and a pressure adjustment bolt 3, a pressure spring 4 and a cylindrical roller 5 are installed on the clutch seat 1. The pressure adjustment bolt 3 is connected to the end of the pressure spring 4, and the other end of the pressure spring 4 is connected to the cylindrical roller 5. The cylindrical roller 5 is located near the outer surface of the clutch shaft 2. The number of the pressure adjustment bolt 3, the pressure spring 4 and the cylindrical roller 5 is two and they are symmetrically distributed on both sides of the clutch shaft 2.

[0027] The clutch seat 1 includes a clutch seat body 10, which is a hollow cylindrical structure. Both ends of the clutch seat body 10 extend outward to form a clutch seat connecting column 11. The clutch seat connecting column 11 is a hollow structure. The clutch shaft 2 is penetrated by the clutch seat body 10. The pressure spring 4 and the cylindrical roller 5 are located in the clutch seat connecting column 11. The end of the pressure adjusting bolt 3 extends into the clutch seat connecting column 11 and is connected to the pressure spring 4. The pressure adjusting bolt 3 is threadedly connected to the clutch seat connecting column 11.

[0028] In this embodiment, the staff adjusts the fit between the pressure adjustment bolt 3 and the clutch seat 1, thereby controlling the rotation of the clutch shaft 2 through the degree of contact between the pressure spring 4 and the cylindrical roller 5 and the clutch shaft 2.

[0029] There are two clutch seat connecting columns 11 and they are symmetrically distributed. A clutch seat connecting column nut 111 is fixedly provided on the end surface of the clutch seat connecting column 11. An external thread structure is provided on the pressure adjustment bolt 3. The pressure adjustment bolt 3 is passed through the clutch seat connecting column nut 111 and is threadedly connected.

[0030] During the coordinated movement of the pressure adjustment bolt 3 and the clutch seat connecting column nut 111, the clutch seat connecting column nut 111 does not move, while the pressure adjustment bolt 3 realizes its own rotation and reciprocating motion along its own axis direction.

[0031] In this embodiment, the cross section of the clutch seat connecting column nut 11 is similar to a "convex" structure, the outer surface of the protruding part of the clutch seat connecting column nut 11 is an external thread structure, the end of the clutch seat connecting column 11 is an internal thread structure, and the clutch seat connecting column nut 11 and the clutch seat connecting column 11 are threadedly matched and fastened. In actual use, other connection methods can be used according to actual use needs, such as welding the clutch seat connecting column nut 11 and the clutch seat connecting column 11.

[0032] The clutch shaft 2 is a stepped shaft structure. The clutch shaft 2 includes a first clutch shaft section 21, a second clutch shaft section 22 and a third clutch shaft section 23 which are fixedly connected in sequence. The shaft diameters of the first clutch shaft section 21, the second clutch shaft section 22 and the third clutch shaft section 23 increase in sequence. The first clutch shaft section 21 is provided with a clutch shaft keyway 211, and the clutch shaft keyway 211 is a concave structure. The third clutch shaft section 23 is provided with a clutch shaft groove 231, and the extension direction of the clutch shaft groove 231 is parallel to the axis of the clutch shaft 2.

[0033] In actual use, a connection key is installed in the clutch shaft keyway 211, and the clutch shaft keyway 211 is connected to the existing equipment through the connection key. The clutch shaft keyway 211 is two in number and symmetrically distributed on the first section 21 of the clutch shaft.

[0034] The cross section of the clutch shaft groove 231 is similar to a "U"-shaped structure. The clutch shaft groove 231 includes a clutch shaft groove bottom 232 and a clutch shaft groove inclined portion 233. The cross section of the clutch shaft groove bottom 232 is a "U"-shaped structure, and the cross section of the clutch shaft groove inclined portion 233 is a trumpet-shaped structure. In this embodiment, the angle is 60°. The top of the clutch shaft groove bottom 232 is connected to the clutch shaft groove inclined portion 233. The number of clutch shaft grooves 231 is four and they are symmetrically distributed on the outer surface of the third section 231 of the clutch shaft.

[0035] When the pressure adjustment bolt 3 pushes the cylindrical roller 5 to move through the pressure spring 4 , the cylindrical roller 5 abuts against the clutch shaft groove 231 .

[0036] The end of the pressure adjustment bolt 3 is connected to the end of the pressure spring 4. In this embodiment, a pressure adjustment bolt baffle is installed at the end of the pressure adjustment bolt 3. The pressure adjustment bolt baffle is a rotating body structure, and the cross section of the pressure adjustment bolt baffle is a "convex" structure. The pressure spring 4 is located between the pressure adjustment bolt baffle and the cylindrical roller 5.

[0037] The material of the pressure spring 4 is 60Si2Mn, the diameter of the spring is d=8mm, the center diameter of the spring is D=32mm, the pitch of the spring is p=13mm, the effective number of coils of the spring is n=5, the actual number of coils of the spring is n1=7, the free height of the spring is H=67.5mm, the helix angle of the spring is 7.37°, the unfolded length of the spring is L=710mm, and the hardness of the spring after heat treatment is HRC=45~50, preferably HRC=45.

[0038] A cylindrical roller mounting sleeve 51 is sleeved on the outer surface of the cylindrical roller 5. The cylindrical roller mounting sleeve 51 is a rotating body structure. The end of the cylindrical roller mounting sleeve 51 is connected to the end of the pressure spring 4. When the pressure spring 4 is extended or retracted, the cylindrical roller mounting sleeve 51 and the cylindrical roller 5 are driven to reciprocate.

[0039] In this embodiment, the end of the cylindrical roller mounting sleeve 51 is concave and has a "U"-shaped cross-section. The end of the pressure spring 4 is located at the concave portion of the cylindrical roller mounting sleeve 51. A cylindrical roller mounting sleeve groove 52 is provided at the other end of the cylindrical roller mounting sleeve 51. The cross-section of the cylindrical roller mounting sleeve groove 52 is a semicircular structure. A portion of the cylindrical roller 5 is located in the cylindrical roller mounting sleeve groove 52.

[0040] During use, the utility model adjusts the length of the pressure adjustment bolt 3 inside the clutch seat connecting column 11, thereby changing the force between the pressure spring 4 and the cylindrical roller 5, and then controlling the clutch shaft 2 to rotate, and overcome the friction between the cylindrical roller 5 and the clutch shaft groove 231. Thus, the external rotation required for adjusting the clutch shaft 2 to rotate is achieved.

[0041] Those skilled in the art will appreciate that the embodiments described herein are intended to help readers understand the principles of the present invention, and should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific variations and combinations based on the technical inspirations disclosed in the present invention without departing from the essence of the present invention, and these variations and combinations are still within the protection scope of the present invention.

Claims

1. A bolt cylindrical roller safety clutch, characterized in that: The invention comprises a clutch seat (1), a clutch shaft (2) is passed through the clutch seat (1), a pressure adjustment bolt (3), a pressure spring (4) and a cylindrical roller (5) are installed on the clutch seat (1), the pressure adjustment bolt (3) is connected to the end of the pressure spring (4), the other end of the pressure spring (4) is connected to the cylindrical roller (5), the cylindrical roller (5) is located near the outer surface of the clutch shaft (2), and the number of the pressure adjustment bolt (3), the pressure spring (4) and the cylindrical roller (5) is two and they are symmetrically distributed on both sides of the clutch shaft (2).

2. A bolt cylindrical roller safety clutch according to claim 1, characterized in that: The clutch seat (1) comprises a clutch seat body (10), the clutch seat body (10) is a hollow columnar structure, the two ends of the clutch seat body (10) extend outward to form a clutch seat connecting column (11), the clutch seat connecting column (11) is a hollow structure, the clutch shaft (2) is inserted into the clutch seat body (10), the pressure spring (4) and the cylindrical roller (5) are located in the clutch seat connecting column (11), the end of the pressure adjustment bolt (3) extends into the clutch seat connecting column (11) and is connected to the pressure spring (4), and the pressure adjustment bolt (3) is threadedly connected to the clutch seat connecting column (11).

3. The bolt cylindrical roller safety clutch according to claim 1, characterized in that: The clutch seat connecting column (11) is provided with two in number and symmetrically distributed, a clutch seat connecting column nut (111) is provided on the end surface of the clutch seat connecting column (11), an external thread structure is provided on the pressure adjustment bolt (3), and the pressure adjustment bolt (3) is passed through the clutch seat connecting column nut (111) and threadedly connected.

4. A bolt cylindrical roller safety clutch according to claim 1, characterized in that: The clutch shaft (2) is a stepped shaft structure. The clutch shaft (2) comprises a first clutch shaft section (21), a second clutch shaft section (22) and a third clutch shaft section (23) which are fixedly connected in sequence. The shaft diameters of the first clutch shaft section (21), the second clutch shaft section (22) and the third clutch shaft section (23) increase in sequence. The first clutch shaft section (21) is provided with a clutch shaft keyway (211), the clutch shaft keyway (211) is a concave structure. The third clutch shaft section (23) is provided with a clutch shaft groove (231), and the extension direction of the clutch shaft groove (231) is parallel to the axis of the clutch shaft (2).

5. A bolt cylindrical roller safety clutch according to claim 4, characterized in that: The cross section of the clutch shaft groove (231) is similar to a "U"-shaped structure. The clutch shaft groove (231) includes a clutch shaft groove bottom (232) and a clutch shaft groove inclined portion (233). The cross section of the clutch shaft groove bottom (232) is a "U"-shaped structure. The cross section of the clutch shaft groove inclined portion (233) is a trumpet-shaped structure. The top of the clutch shaft groove bottom (232) is connected to the clutch shaft groove inclined portion (233). The number of the clutch shaft grooves (231) is four and they are symmetrically distributed on the outer surface of the third section (231) of the clutch shaft.

6. A bolt cylindrical roller safety clutch according to claim 1, characterized in that: The end of the pressure adjustment bolt (3) is connected to the end of the pressure spring (4), and a pressure adjustment bolt baffle is installed at the end of the pressure adjustment bolt (3). The pressure spring (4) is located between the pressure adjustment bolt baffle and the cylindrical roller (5).

7. The bolt cylindrical roller safety clutch according to claim 1, characterized in that: The pressure spring (4) is made of 60Si2Mn, with a spring diameter d=8mm, a spring center diameter D=32mm, a spring pitch p=13mm, a spring effective number of turns n=5, a spring actual number of turns n1=7, a spring free height H=67.5mm, a spring helical angle of 7.37°, and a spring unfolded length L=710mm.

8. The bolt cylindrical roller safety clutch according to claim 1, characterized in that: A cylindrical roller mounting sleeve (51) is sleeved on the outer surface of the cylindrical roller (5). The cylindrical roller mounting sleeve (51) is a rotating body structure. The end of the cylindrical roller mounting sleeve (51) is connected to the end of the pressure spring (4). When the pressure spring (4) is extended or retracted, it drives the cylindrical roller mounting sleeve (51) and the cylindrical roller (5) to reciprocate.

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