Sleeve with magnetic adsorption function

Abstract

The utility model discloses a sleeve with a magnetic adsorption function, which relates to the field of front transmission shaft assemblies and comprises a sleeve body, a left partition plate, a right partition plate, a triangular partition plate, an upper cover plate, a magnetic module and an adsorption switch. The magnetic module is arranged in the sleeve, the partition plate for reducing loss of magnetic adsorption force is arranged around the magnetic module, the switch for controlling adsorption and separation of the magnetic module is arranged outside the sleeve, and the sleeve can effectively assist a torque wrench to apply large torque, so that the sleeve can be effectively contacted with an outer hexagonal nut without falling off although the contact length is short; and the torque calibration of the nut can be quickly and safely completed.

Description

Technical Field

[0001] The utility model relates to the field of front transmission shaft assemblies, in particular to a sleeve with a magnetic adsorption function. Background Art

[0002] Among the commercial vehicle drive shaft assemblies, there is a category of front drive shaft assemblies (such as Figure 1 and Figure 2 As shown in FIG. 1 , this type of front drive shaft assembly (1') is generally assembled with an intermediate bearing support frame (2') and an intermediate flange (3') at the end of a spline shaft (5'), and then the intermediate nut (4') is tightened and calibrated to a certain torque value using a torque wrench (7') and a common hexagon socket (6'), and finally the outer side of the intermediate nut is flattened to prevent it from falling off.

[0003] The following is a brief description of the current assembly technology solutions. Figure 1 As shown in the figure, because half the height of the middle nut is reserved for flattening and preventing it from falling off, and there is not much space left for the parts assembled with the middle flange, if it is too high, it will cause assembly interference, so the height of the outer hexagonal edge of the middle nut is relatively short. Therefore, the effective contact length between the outer hexagon of the middle nut and the ordinary inner hexagon socket will become shorter. When using a torque wrench to calibrate the torque, the torque used is relatively large (450-550N·m torque is required for conventional use), and the torque wrench with high torque is relatively heavy. When calibrating by manpower, the ordinary inner hexagon socket can easily slip off the outer hexagon of the middle nut, resulting in calibration failure. Moreover, slipping under high torque conditions poses a certain safety hazard to the operator. The general solution to this situation requires two people to cooperate with each other, one to press the ordinary inner hexagon socket, and the other to rotate the torque wrench. This is not only time-consuming and labor-intensive, but also has a relatively low calibration efficiency. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a sleeve with a magnetic adsorption function. The built-in magnetic module effectively assists the torque wrench in applying a large torque. Even if the contact length with the external hexagonal nut is short, it can effectively contact without falling off, and the torque calibration of the nut can be completed quickly and safely.

[0005] The purpose of the utility model is achieved through the following technical solutions: This sleeve with magnetic adsorption function includes:

[0006] The sleeve body has an inner cavity of an inner hexagonal cavity, and a through hole is opened between two opposite surfaces of the inner hexagonal cavity and the outer wall of the sleeve body to form a left hole and a right hole distributed coaxially. A wrench connection hole is opened on the top of the sleeve body for connecting a torque wrench;

[0007] The left partition is placed in the hexagonal cavity and fits with the inner wall of the cavity where the left hole is located. The left partition screw extends into the left hole and is fixed to the left partition;

[0008] The right partition is placed in the hexagonal cavity and fits in with the inner wall of the cavity where the right hole is located;

[0009] Triangular baffles, including a front triangular baffle and a rear triangular baffle, are respectively placed in the inner hexagonal cavity and fit with the inner wall of the corresponding cavity, and are located on both sides of the left baffle and the right baffle;

[0010] an upper partition, placed in the hexagonal cavity and fitting into the top space of the hexagonal cavity;

[0011] The magnetic module is placed in the space surrounded by the left partition, the right partition, the triangular partition, and the upper partition and slides up and down, with the surface of the magnetic module in contact with the left partition and the right partition, and the lower surface of the magnetic module serves as an adsorption plane; and

[0012] The adsorption switch includes an adsorption switch handle, a connecting rod, a polarity rotary joint, and a cover plate assembly. The cover plate assembly is fixed on the outer wall of the sleeve body at a position corresponding to the right hole. One end of the connecting rod is driven to rotate by the adsorption switch handle. The other end of the connecting rod passes through the cover plate assembly and extends into the right hole, and is connected to drive the polarity rotary joint to rotate. The polarity rotary joint is adsorbed on the magnetic module and changes the direction of the magnetic pole during rotation, thereby driving the magnetic module to move up and down.

[0013] The lower opening of the sleeve body is used to be sleeved on the middle nut of the spline shaft, so that the outer end face of the spline shaft extends into the inner hexagonal cavity, and the adsorption plane is controlled to contact or separate with the outer end face of the spline shaft by rotating the adsorption switch handle.

[0014] As a further technical solution, the cover plate assembly includes a cover plate base that matches the outer wall of the sleeve body and a connecting rod cover plate fixed to the cover plate base by cover plate screws. The connecting rod cover plate presses the cover plate base onto the sleeve body, and the connecting rod cover plate also presses the connecting rod onto the polarity rotary joint.

[0015] As a further technical solution, one end of the connecting rod is engaged with the slot at the tail of the polarity rotary joint, and the other end of the connecting rod is threadedly connected to the adsorption switch handle.

[0016] As a further technical solution, a pad is provided between the right partition and the magnetic module, and the head of the polarity rotary joint is embedded and installed in the pad.

[0017] As a further technical solution, the two sides of the bottom of the left partition extend outward to form partition anti-slip protrusions, which are used to support the lower end surfaces of the front triangular partition and the rear triangular partition, so that the triangular partition moves between the lower end surface of the upper partition and the partition anti-slip protrusions.

[0018] As a further technical solution, the left partition screw, left partition, right partition, triangular partition and upper partition are all made of non-magnetic materials.

[0019] As a further technical solution, gaps are left between the left partition screw and the left hole, between the connecting rod and the right hole, between the connecting rod and the cover base, and between the connecting rod and the connecting rod cover.

[0020] The beneficial effects of the utility model are:

[0021] 1. A built-in magnetic adsorption module is designed inside the ordinary hexagonal socket. The partition is limited by two through-holes, and the adsorption and release functions of the magnetic module are transferred to the outer rotating handle to prevent the socket and nut from slipping, and quickly assist in completing the torque calibration;

[0022] 2. A partition is placed around the magnetic module to reduce the loss of magnetic adsorption force and reduce the overall weight of the sleeve. The shape of the partition ensures that the adsorption plane of the magnetic module is relatively horizontal;

[0023] 3. A partition anti-dropping block is set at the bottom of the left partition to prevent the triangular partition from falling. This structure ensures the stability of the adsorption device and prevents the partition from falling, which may lead to adsorption failure.

[0024] 4. There should be a gap (about 1mm) between the left partition screw and the left hole, between the connecting rod and the right hole, between the connecting rod and the cover base, and between the connecting rod and the connecting rod cover. This gap is to allow the magnetic module to move a certain amount in the vertical direction. This movement can ensure that the contact surface is completely in contact during magnetic adsorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the front drive shaft assembly in the prior art.

[0026] Figure 2 This is a structural diagram of using a torque wrench to calibrate torque in the prior art.

[0027] Figure 3 This is a schematic diagram of the main structure of the sleeve body in the present invention.

[0028] Figure 4 It is a bottom view structural diagram of the sleeve body in the present invention.

[0029] Figure 5 It is a left side structural schematic diagram of the sleeve body in the present invention.

[0030] Figure 6 It is a right side structural schematic diagram of the sleeve body in the present invention.

[0031] Figure 7 for Figure 3 AA cross-sectional view.

[0032] Figure 8 for Figure 3 BB cross-sectional view.

[0033] Figure 9 for Figure 6 CC cross-sectional view.

[0034] Figure 10 It is a schematic diagram of the top view of the structure of the utility model when assembled with a torque wrench and an intermediate flange.

[0035] Figure 11 This is a schematic diagram of the main structure of the utility model when assembled with a torque wrench and an intermediate flange.

[0036] Figure 12 for Figure 10 DD cross-sectional view.

[0037] Figure 13 for Figure 12 A partial enlarged schematic diagram of the middle I area.

[0038] Explanation of reference numerals: front transmission shaft assembly 1', intermediate bearing support frame 2', intermediate flange 3', intermediate nut 4', spline shaft 5', spline shaft outer end surface 5a', ordinary hexagon socket 6', torque wrench 7';

[0039] Sleeve body 1, left hole 1-1, right hole 1-2, wrench connection hole 1-3, adsorption switch handle 2, connecting rod 3, cover screw 4, connecting rod cover 5, cover base 6, left partition screw 7, left partition 8, partition anti-dropping protrusion 8-1, right partition 9, triangular partition 10, front triangular partition 10-1, rear triangular partition 10-2, upper partition 11, polarity rotation joint 12, magnetic module 13, adsorption plane 13-1, pad 14. DETAILED DESCRIPTION

[0040] The following is a detailed introduction to the present invention with reference to the accompanying drawings:

[0041] Example: As shown in the attached Figures 3 to 13 As shown, the sleeve with magnetic adsorption function includes a sleeve body 1, a left hole 1-1, a right hole 1-2, a wrench connecting hole 1-3, an adsorption switch handle 2, a connecting rod 3, a cover screw 4, a connecting rod cover 5, a cover base 6, a left partition screw 7, a left partition 8, a partition anti-detachment protrusion 8-1, a right partition 9, a triangular partition 10, a front triangular partition 10-1, a rear triangular partition 10-2, an upper partition 11, a polarity rotation joint 12, a magnetic module 13, an adsorption plane 13-1, and a pad 14.

[0042] Reference Attachment Figure 3 、 4 , 7, 8, 9. The inner cavity of the sleeve body 1 is a hexagonal cavity (matching the outer hexagon of the intermediate nut 4'). Two surfaces of the inner hexagonal cavity are selected to face each other, and a through hole is formed between each of these two surfaces and the outer wall of the sleeve body 1, forming a coaxial left hole 1-1 and right hole 1-2. In addition, a wrench connection hole 1-3 (preferably a square hole) is defined at the top of the sleeve body 1 to connect a matching torque wrench 7'.

[0043] The left partition plate 8, the right partition plate 9, the triangular partition plate 10 and the upper partition plate 11 constitute the partition plate assembly and are all placed in the inner hexagonal cavity of the sleeve body 1, as shown in FIG. Figure 7 、 8 9, wherein the left partition 8 is in contact with the inner wall of the cavity where the left hole 1-1 is located, and the left partition screw 7 extends into the left hole 1-1 and is fixed to the left partition 8. The right partition 9 is in contact with the inner wall of the cavity where the right hole 1-2 is located, and the upper partition 11 is consistent with the top space of the hexagonal cavity. The triangular partitions 10, including the front triangular partition 10-1 and the rear triangular partition 10-2, are respectively in contact with the inner wall of the corresponding cavity and are located on both sides of the left partition 8 and the right partition 9.

[0044] The magnetic module 13 is placed in the space surrounded by the left partition 8, the right partition 9, the triangular partition 10 and the upper partition 11, and the surface of the magnetic module 13 is in contact with the left partition 8 and the right partition 9, and can slide up and down relative to the partition assembly. The lower surface of the magnetic module 13 is provided with two highly flush adsorption surfaces 13-1 (such as Figure 7 shown).

[0045] Reference Attachment Figure 4 、 89. Install an adsorption switch at the corresponding position of the right hole 1-2. The adsorption switch includes an adsorption switch handle 2, a connecting rod 3, a polarity rotary joint 12, and a cover assembly. The cover assembly is fixed on the outer wall of the sleeve body 1 at a position corresponding to the right hole 1-2. The cover assembly includes a cover base 6 that matches the outer wall of the sleeve body 1 and a connecting rod cover 5 fixed to the cover base 6 by a cover screw 4. The connecting rod cover 5 presses the cover base 6 onto the sleeve body 1. At the same time, the connecting rod cover 5 also presses the connecting rod 3 onto the polarity rotary joint 12. One end of the connecting rod 3 is threadedly connected to the adsorption switch handle 2. The other end of the connecting rod 3 passes through the cover assembly and extends into the right hole 1-2, and is engaged with the tail slot of the polarity rotary joint 12. Preferably, a pad 14 is provided between the right partition 9 and the magnetic module 13, and the head of the polarity rotary joint 12 is embedded and installed in the pad 14. When the adsorption switch handle 2 is rotated, the connecting rod 3 is rotated synchronously, thereby driving the polarity rotary joint 12 to rotate. The polarity rotary joint 12 is adsorbed on the magnetic module 13 and changes the direction of the magnetic pole during rotation, thereby driving the magnetic module 13 to move up and down under the action of the magnetic field.

[0046] like Figure 4 、 7 As shown, preferably, both sides of the bottom of the left partition 8 extend outward to form partition anti-slip protrusions 8-1, and the partition anti-slip protrusions 8-1 can resist the lower end surfaces of the front triangular partition 10-1 and the rear triangular partition 10-2, so that the triangular partition 10 moves between the lower end surface of the upper partition 11 and the partition anti-slip protrusions 8-1, thereby preventing the triangular partition 10 from falling. This structure ensures the stability of the adsorption device and prevents the partition from falling, which may lead to adsorption failure.

[0047] Furthermore, the left partition screw 7, the left partition 8, the right partition 9, the triangular partition 10 and the upper partition 11 are all made of non-magnetic materials, which can effectively reduce the loss of magnetic adsorption force and reduce the weight of the entire sleeve.

[0048] Preferably, a gap (about 1 mm) is left between the left partition screw 7 and the left hole 1-1, between the connecting rod 3 and the right hole 1-2, between the connecting rod 3 and the cover base 6, and between the connecting rod 3 and the connecting rod cover 5. The gap is intended to allow the magnetic module 13 to move a certain amount in the vertical direction, which can ensure that the contact surface is completely in contact during magnetic adsorption.

[0049] like Figures 10-13 As shown, when in use, the lower end of the sleeve body 1 is sleeved on the middle nut 4' of the spline shaft 5', so that the outer end face 5a' of the spline shaft extends into the inner hexagonal cavity, and the adsorption plane 13-1 is controlled to contact or separate with the outer end face 5a' of the spline shaft by rotating the adsorption switch handle 2.

[0050] The working process of this utility model:

[0051] After pre-tightening the middle nut 4' with a pneumatic wrench, insert the torque wrench 7' into the wrench connection hole 1-3 of the sleeve body 1 so that the inner hexagonal cavity of the sleeve body 1 contacts the outer hexagon of the middle nut 4'. Then, rotate the adsorption switch handle 2 to drive the polarity rotary joint 12 to rotate. The polarity rotary joint 12 changes the direction of the magnetic pole during rotation, thereby driving the magnetic module 13 to move up and down under the action of the magnetic field. At this time, the two adsorption planes 13-1 of the magnetic module 13 fit with the outer end face 5a' of the spline shaft and are tightly adsorbed under the action of magnetic force. Subsequently, use the torque wrench 7' to calibrate the torque of the middle nut 4' to the set value; after the calibration is completed, rotate the adsorption switch handle 2 in the opposite direction to cancel the adsorption, and then remove the torque wrench 7'.

[0052] It is understandable that for those skilled in the art, any equivalent replacement or change of the technical solution and the concept of the utility model should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A sleeve with magnetic adsorption function, characterized in that: include: The sleeve body (1) has an inner cavity which is an inner hexagonal cavity. A through hole is provided between two opposite surfaces of the inner hexagonal cavity and the outer wall of the sleeve body (1), forming a left hole (1-1) and a right hole (1-2) which are coaxially distributed. A wrench connection hole (1-3) is provided on the top of the sleeve body (1) for connecting a torque wrench (7'). The left partition (8) is placed in the hexagonal cavity and fits in place with the inner wall of the cavity where the left hole (1-1) is located. The left partition screw (7) extends into the left hole (1-1) and is fixed to the left partition (8); The right partition (9) is placed in the hexagonal cavity and fits in contact with the inner wall of the cavity where the right hole (1-2) is located; The triangular partitions (10) include a front triangular partition (10-1) and a rear triangular partition (10-2), which are respectively placed in the inner hexagonal cavity and fit with the inner wall of the corresponding cavity, and are located on both sides of the left partition (8) and the right partition (9); An upper partition (11) is placed in the hexagonal cavity and matches the top space of the hexagonal cavity; The magnetic module (13) is placed in the space enclosed by the left partition (8), the right partition (9), the triangular partition (10) and the upper partition (11) and slides up and down, and the surface of the magnetic module (13) is in contact with the left partition (8) and the right partition (9), and the lower surface of the magnetic module (13) serves as an adsorption plane (13-1); as well as An adsorption switch comprises an adsorption switch handle (2), a connecting rod (3), a polarity rotary joint (12) and a cover plate assembly, wherein the cover plate assembly is fixed on the outer wall of the sleeve body (1) at a position corresponding to the right hole (1-2), one end of the connecting rod (3) is driven to rotate by the adsorption switch handle (2), and the other end of the connecting rod (3) passes through the cover plate assembly and extends into the right hole (1-2), and is connected to drive the polarity rotary joint (12) to rotate, and the polarity rotary joint (12) is adsorbed on the magnetic module (13) and changes the direction of the magnetic pole when rotating, thereby driving the magnetic module (13) to move up and down; The lower opening of the sleeve body (1) is used to be sleeved on the middle nut (4') of the spline shaft (5'), so that the outer end surface (5a') of the spline shaft extends into the inner hexagonal cavity, and the adsorption plane (13-1) is controlled to contact or separate with the outer end surface (5a') of the spline shaft by rotating the adsorption switch handle (2).

2. The sleeve with magnetic adsorption function according to claim 1, characterized in that: The cover plate assembly comprises a cover plate base (6) matched with the outer wall of the sleeve body (1) and a connecting rod cover plate (5) fixed to the cover plate base (6) by means of cover plate screws (4); the connecting rod cover plate (5) presses the cover plate base (6) onto the sleeve body (1), and the connecting rod cover plate (5) also presses the connecting rod (3) onto the polarity rotary joint (12).

3. The sleeve with magnetic adsorption function according to claim 2, characterized in that: One end of the connecting rod (3) is engaged with the tail slot of the polarity rotary joint (12), and the other end of the connecting rod (3) is threadedly connected to the adsorption switch handle (2).

4. The sleeve with magnetic adsorption function according to claim 3, characterized in that: A backing plate (14) is provided between the right partition plate (9) and the magnetic module (13), and the head of the polarity rotary joint (12) is embedded and installed in the backing plate (14).

5. The sleeve with magnetic adsorption function according to claim 1, characterized in that: The two sides of the bottom of the left partition (8) extend outward to form partition anti-slip convex blocks (8-1) for abutting against the lower end surfaces of the front triangular partition (10-1) and the rear triangular partition (10-2), so that the triangular partition (10) moves between the lower end surface of the upper partition (11) and the partition anti-slip convex blocks (8-1).

6. The sleeve with magnetic adsorption function according to claim 1, characterized in that: The left partition screw (7), the left partition (8), the right partition (9), the triangular partition (10) and the upper partition (11) are all made of non-magnetic materials.

7. The sleeve with magnetic adsorption function according to claim 1, characterized in that: Gaps are left between the left partition screw (7) and the left hole (1-1), between the connecting rod (3) and the right hole (1-2), between the connecting rod (3) and the cover base (6), and between the connecting rod (3) and the connecting rod cover (5).

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