A taper bearing pre-tightening force selected pad adjusting tool

Abstract

The utility model discloses a kind of taper bearing pre-tightening force selected pad adjusting tools, including the detection seat of metal material, the detection seat lower end side is equidistantly provided with weight-reducing hole, outer ring press sleeve is nested and installed in the detection seat interior, and the outer ring press sleeve upper portion is provided with spacer, and the spacer and outer ring press sleeve between installation is used for keeping the relative rotation of both plane bearings, the detection seat upper surface is installed with the thread seat concentric with it, and the thread seat is fixedly installed between detection seat by the inner hexagon screw of its side penetration installation. This taper bearing pre-tightening force selected pad adjusting tool, adopt novel structure design, rotate by pressure rod link rod drive threaded pressure head, utilize the screw thread structure in threaded pressure head and thread seat to make threaded pressure head move downwards, so that threaded pressure head extrude spacer downwards, finally make spacer push outer ring press sleeve and pad piece are pressed tightly, staff can handheld operating device in this process, increase overall use applicability.

Description

Technical Field

[0001] This utility model relates to the technical field of tractor production related tools, specifically a tool for adjusting the preload of a tapered bearing. Background Technology

[0002] Tractors are a common type of agricultural machinery, mainly used for agricultural operations such as tilling, sowing, fertilizing, and harvesting. During the production of tractors, shims need to be installed at the intermediate shaft position. The preload between the shims and the shaft needs to meet certain standards, which requires inspection and adjustment by staff.

[0003] In the prior art, Chinese Patent Publication No. CN112857803A discloses a device for measuring and selecting the preload shim of a tapered bearing housing. The device includes an upper detection slide assembly, a control cabinet assembly, a frame assembly, a lower detection slide assembly, and a pneumatic control assembly. The control cabinet assembly provides a low-voltage electrical control system, and the pneumatic control assembly controls the cylinder to complete the required operation. It can directly detect the thickness of the adjusting spacer between two tapered bearings in the bearing housing, reducing the labor intensity of manual or indirect measurement, and accurately ensuring the preload of the tapered bearing, ensuring qualified rotational torque, extending bearing life. The device is simple and convenient to operate, has low equipment cost, and can increase the pass rate to 95%-98%. The testing process involves pressurizing the bearing and detecting the required preload torque value and shim thickness for the current product.

[0004] Based on the above information, it can be seen that existing testing and selection devices are generally large-scale equipment. In actual use, the application scenarios of large-scale devices are very limited, that is, they can only be used in fixed locations and cannot be used handheld. Therefore, they have significant overall limitations. Utility Model Content

[0005] The purpose of this utility model is to provide a tool for adjusting the preload of tapered bearings to solve the problem of limited applicability mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tapered bearing preload adjustment tool, comprising a metal testing seat, wherein weight-reducing holes are equally spaced on the lower side of the testing seat. An outer ring pressure sleeve is nested inside the detection seat, and a spacer is provided above the outer ring pressure sleeve. A plane bearing for maintaining the relative rotation of the two is installed between the spacer and the outer ring pressure sleeve. The upper surface of the detection seat is equipped with a threaded seat concentric with it, and the threaded seat is fixedly installed between itself and the detection seat by an internal hexagon screw installed through its side. A pressure rod connecting rod is provided above the threaded seat, and a clamping mechanism is provided between the pressure rod connecting rod and the threaded seat. A connecting sleeve is installed on the outer side of the upper end of the pressure rod, and an anti-slip pad with a convex ball structure is fixedly installed on the outer surface of the connecting sleeve.

[0007] Preferably, the clamping mechanism includes a threaded pressure head fixedly installed at the lower end of the pressure rod connecting rod, and the outer surface of the lower end of the threaded pressure head is provided with an external thread structure, and the external thread structure of the threaded pressure head and the internal thread structure of the thread seat mesh with each other.

[0008] Preferably, a compression spring is fixedly installed inside the lower end of the spacer, and the lower end of the compression spring is fixedly connected to the upper surface of the planar bearing.

[0009] Preferably, a limiting pin is threaded through the side of the detection seat, and the top of the limiting pin engages with the hole structure opened on the side of the outer ring pressure sleeve.

[0010] Preferably, the pressure rod is configured as two parts: a first rod body and a second rod body, with the second rod body being slidably connected to the connecting sleeve through it.

[0011] Preferably, a fixing pin is installed through the side of the connecting sleeve, and the fixing pin is inserted and engaged with the positioning hole opened on the side of the first rod body, and the positioning hole is evenly distributed at a fixed interval.

[0012] Preferably, a connector is fixedly installed at the top of the second rod, and the upper surface of the connector is provided with a mounting groove for connecting the extension rod, and the mounting groove is configured as a square structure.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This tapered bearing preload adjustment tool adopts a novel structural design, the specific details of which are as follows: 1. The threaded pressure head is rotated by the pressure rod connecting rod. The threaded pressure head moves downward by utilizing the threaded structure in the threaded seat. This causes the threaded pressure head to squeeze the septum downward, and finally the septum pushes the outer ring pressure sleeve to press the gasket tightly. During this process, the operator can hold the operating device by hand, which increases the overall applicability. Furthermore, during the clamping process, the use of a plane bearing allows relative rotation between the septum and the outer ring pressure sleeve, thereby preventing the outer ring pressure sleeve from rotating along with it, and the compression spring under the septum can provide additional clamping force.

[0014] 2. When operating, the anti-slip pad is used to prevent slipping. After pulling out the fixing pin in the connecting sleeve, the first rod can slide inside the connecting sleeve (in normal use, the fixing pin is inserted into the positioning hole to fix the second rod), thereby adjusting the overall length of the pressure rod and connecting rod to adapt to more complex usage environments. Furthermore, a connector is fixedly installed at the upper end of the second rod. An extension rod can be connected using the mounting groove on the upper surface of the connector, further increasing the overall length of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the detection seat of this utility model; Figure 3 This is an exploded view of the detection seat of this utility model; Figure 4 This is a schematic diagram of the planar bearing structure of this utility model; Figure 5 This is a schematic diagram of the internal structure of the connecting sleeve of this utility model; Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of the first rod in the extended state of this utility model.

[0016] In the diagram: 1. Detector seat; 2. Outer ring sleeve; 3. Weight reduction hole; 4. Spacer; 5. Surface bearing; 6. Compression spring; 7. Threaded pressure head; 8. Threaded seat; 9. Socket head screw; 10. Pressure rod connector; 1001. First rod body; 1002. Second rod body; 11. Limit pin; 12. Connecting sleeve; 13. Anti-slip pad; 14. Fixing pin; 15. Positioning hole; 16. Connecting joint; 17. Mounting groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1: Please refer to Figures 1-4To achieve handheld operation at any time, this embodiment provides the following technical solution, specifically disclosing: a metal detection seat 1, with weight-reducing holes 3 evenly spaced on the lower side of the detection seat 1; an outer ring pressure sleeve 2 nested inside the detection seat 1, with a spacer 4 above the outer ring pressure sleeve 2; a plane bearing 5 installed between the spacer 4 and the outer ring pressure sleeve 2 to maintain their relative rotation; a threaded seat 8 concentric with the detection seat 1 installed on the upper surface of the detection seat 1, and the threaded seat 8 is fixedly installed to the detection seat 1 by an internal hexagon screw 9 through its side; and a pressure rod is provided above the threaded seat 8. A clamping mechanism is provided between the connecting rod 10 and the threaded seat 8. The clamping mechanism includes a threaded head 7 fixedly installed at the lower end of the connecting rod 10. The outer surface of the lower end of the threaded head 7 is provided with an external thread structure. The external thread structure of the threaded head 7 and the internal thread structure of the threaded seat 8 are interlocked. A compression spring 6 is fixedly installed inside the lower end of the spacer 4. The lower end of the compression spring 6 is fixedly connected to the upper surface of the plane bearing 5. A limit pin 11 is threaded through the side of the detection seat 1. The top of the limit pin 11 is interlocked with the hole structure opened on the side of the outer ring pressure sleeve 2.

[0019] When using the device, after installing the tractor intermediate shaft shim, the operator holds the pressure rod 10 to align the test seat 1 and press the shim position. Then, the pressure rod 10 is rotated, which drives the threaded pressure head 7 to rotate. The threaded engagement between the threaded pressure head 7 and the threaded seat 8 causes the threaded pressure head 7 to move downward. At this time, the lower end of the threaded pressure head 7 presses the spacer 4 (the spacer 4 rotates relative to the outer ring pressure sleeve 2 using the plane bearing 5). The spacer 4 presses the outer ring pressure sleeve 2 (the compression spring 6 below the spacer 4 further provides the compression force), so that the outer ring pressure sleeve 2 presses the shim tightly (after pressing, the limit pin 11 is turned to fix the position of the outer ring pressure sleeve 2). After pressing, the device is removed and the distance between the lower surface of the outer ring pressure sleeve 2 and the lower surface of the test seat 1 is measured to obtain the thickness of the shim.

[0020] Example 2: Please refer to Figures 5-7 In order to achieve the purpose of adjusting the overall length of the device, this embodiment provides the following technical solution, which specifically discloses: a connecting sleeve 12 is installed on the outer side of the upper end of the pressure rod connecting rod 10, and an anti-slip pad 13 with a convex ball structure is fixedly installed on the outer surface of the connecting sleeve 12. The pressure rod connecting rod 10 is configured as two parts: a first rod body 1001 and a second rod body 1002. The second rod body 1002 is slidably connected to the connecting sleeve 12. A fixing pin 14 is installed through the side of the connecting sleeve 12, and the fixing pin 14 is inserted and engaged with the positioning hole 15 opened on the side of the first rod body 1001. The positioning holes 15 are evenly distributed at a fixed interval. A connector 16 is fixedly installed at the top of the second rod body 1002, and an installation groove 17 for connecting the extension rod is opened on the upper surface of the connector 16. The installation groove 17 is configured as a square structure.

[0021] Before operation, the operator removes the fixing pin 14 from the connecting sleeve 12 according to the actual needs. Then, the position of the second rod 1002 is adjusted to change the overall length of the pressure rod connecting rod 10. After adjustment, the fixing pin 14 is reinstalled (the fixing pin 14 and the positioning hole 15 on the side of the second rod 1002 are in through fit). Then, the operator holds the connecting sleeve 12 and uses the anti-slip pad 13 on the outer surface of the connecting sleeve 12 to prevent slippage. If the length of the pressure rod connecting rod 10 is still insufficient after adjustment, the extension rod is taken out. The square structure at the lower end of the extension rod is used to cooperate with the mounting groove 17 on the upper part of the connector 16 to further extend the length of the pressure rod connecting rod 10.

[0022] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tool for adjusting the preload of a tapered bearing, comprising a metal testing seat (1), wherein weight-reducing holes (3) are equally spaced on the lower side of the testing seat (1), characterized in that: The detection seat (1) is internally fitted with an outer ring pressure sleeve (2), and a spacer (4) is provided above the outer ring pressure sleeve (2). A plane bearing (5) is installed between the spacer (4) and the outer ring pressure sleeve (2) to maintain their relative rotation. The upper surface of the detection seat (1) is equipped with a threaded seat (8) concentric with it, and the threaded seat (8) is fixedly installed with the detection seat (1) by an internal hexagon screw (9) installed through its side. A pressure rod connecting rod (10) is provided above the threaded seat (8), and a clamping mechanism is provided between the pressure rod connecting rod (10) and the threaded seat (8). A connecting sleeve (12) is installed on the upper outer side of the pressure rod (10), and an anti-slip pad (13) with a convex ball structure is fixedly installed on the outer surface of the connecting sleeve (12).

2. The tapered bearing preload adjustment tool according to claim 1, characterized in that: The clamping mechanism includes a threaded head (7) fixedly installed at the lower end of the pressure rod (10), and the outer surface of the lower end of the threaded head (7) is provided with an external thread structure, and the external thread structure of the threaded head (7) and the internal thread structure of the threaded seat (8) mesh with each other.

3. The tapered bearing preload adjustment tool according to claim 1, characterized in that: A compression spring (6) is fixedly installed inside the lower end of the diaphragm (4), and the lower end of the compression spring (6) is fixedly connected to the upper surface of the planar bearing (5).

4. The tapered bearing preload adjustment tool according to claim 1, characterized in that: The detection seat (1) has a threaded limit pin (11) installed on its side, and the top of the limit pin (11) is engaged with the hole structure opened on the side of the outer ring pressure sleeve (2).

5. The tapered bearing preload adjustment tool according to claim 1, characterized in that: The pressure rod connecting rod (10) is configured as two parts: a first rod body (1001) and a second rod body (1002), and the second rod body (1002) is slidably connected to the connecting sleeve (12).

6. The tapered bearing preload adjustment tool according to claim 5, characterized in that: A fixing pin (14) is installed through the side of the connecting sleeve (12), and the fixing pin (14) is inserted into and engaged with the positioning hole (15) opened on the side of the first rod body (1001), and the positioning hole (15) is evenly distributed at a fixed interval.

7. The tapered bearing preload adjustment tool according to claim 5, characterized in that: The top end of the second rod (1002) is fixedly installed with a connector (16), and the upper surface of the connector (16) is provided with a mounting groove (17) for connecting the extension rod, and the mounting groove (17) is set as a square structure.

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