Polyurethane bushing

Abstract

The utility model relates to the technical field of bushings, and discloses a polyurethane bushing, which is characterized in that a clamping ring is welded at one end of each of two sleeves, threads are arranged on the inner walls of the two sleeves and the clamping ring, two placing grooves are arranged on the outer wall of the top of a base, and the two sleeves are connected to the inner walls of the placing grooves in a sliding manner. Due to the arrangement of the placing groove and the base, in the use process of the bushing structure, the bushing structures are connected to the outer wall of a shaft rod through threads, the sleeves of the two bushing structures slide into the placing groove of the base, then the top plate slides on the outer walls of the tops of the sleeves through the placing groove, and the sleeves are wrapped by the base and the top plate; the top plate and the base are locked through the six bolts, after being fastened by the bolts, the top plate and the base extrude inwards to fix the exterior of the sleeve, the sleeve is extruded by the base and the top plate to be fixed to the shaft rod and is not prone to falling off, and the stability of connection between the lining structure and the shaft rod is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of bushing equipment, in particular to a polyurethane bushing. Background Art

[0002] The balancing shaft bushing is a bushing installed between the balancing shaft and the balancing shaft housing. It mainly plays the role of fixing, buffering, shock absorption and force transmission, which is beneficial to the shock absorption, firmness, safety and convenience of the balancing shaft. The current maintenance-free balancing shaft bushing includes a cylindrical sleeve, one end of the sleeve is integrally formed with an outer flange, and is characterized in that a metal support body is embedded in the sleeve along its length direction, the length of the metal support body is less than the length of the sleeve, and the sleeve and the outer flange are both made of polyurethane.

[0003] The application number is CN202222869332.6, which discloses a maintenance-free balancing shaft bushing, relates to the field of bushings, and improves the problem of high replacement cost of the current maintenance-free balancing shaft bushings. It includes an outer polyurethane bushing, and the bottom of the outer polyurethane bushing is provided with an integrated outer polyurethane outer flange. The present application sets an annular groove, an inner polyurethane bushing and an inner polyurethane outer flange, so that when the inner wall of the entire bushing is seriously worn due to long-term rotation of the balancing shaft, the inner polyurethane bushing together with the inner polyurethane outer flange can be pulled out from the inside of the inner polyurethane bushing, and then a new inner polyurethane bushing is taken out, and then the new inner polyurethane outer flange and the inner polyurethane bushing are pressed into the inside of the inner polyurethane bushing until the new inner polyurethane bushing is completely inserted into the inside of the annular groove, so that the replacement of the inner polyurethane bushing can be completed, so that there is no need to replace the entire bushing, which effectively reduces the cost of bushing replacement.

[0004] The above document discloses a maintenance-free balancing shaft bushing with the following defects: the bushing is inserted into the shaft, and when an individual machine needs to connect two shafts, the two bushings are installed on the shaft. When the shaft is in operation, vibration will be generated, and the two bushings are easily driven off by the vibration of the shaft.

[0005] It can be seen from this that the existing maintenance-free balancing shaft bushing does not have the function of locking the two bushings on the shaft rod, and it is necessary to improve the existing deficiencies and provide a function that can lock the two bushings on the shaft rod. Utility Model Content

[0006] The purpose of the utility model is to provide a polyurethane bushing to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model is a polyurethane bushing, comprising a fixed structure and a bushing structure, wherein the bushing structure is clamped on the inner wall of the fixed structure, the fixed structure comprises a base, and the bushing structure comprises two sleeves, one end of the two sleeves is welded with a clamping ring, the inner walls of the two sleeves and the clamping ring are provided with threads, and two placement grooves are provided on the top outer wall of the base, and the two sleeves are slidably connected to the inner walls of the placement grooves. The purpose of such a configuration is that during the use of the bushing structure, the bushing structure is connected to the outer wall of the shaft rod through a thread, and the sleeve and the thread cooperate to protect the outer wall of the shaft rod from wear. When the two bushing structures need to be locked on the shaft rod, the sleeves of the two bushing structures are slid into the placement grooves of the base, and then the top plate is slid on the top outer wall of the sleeve through the placement grooves. The sleeve is wrapped by the base and the top plate, and then the top plate and the base are locked with six bolts. After the top plate and the base are tightened by the bolts, they squeeze each other inward to fix the outside of the sleeve. The sleeve is squeezed and fixed on the shaft rod by the base and the top plate, and is not easy to fall off, thereby enhancing the stability of the connection between the bushing structure and the shaft rod.

[0009] Furthermore, a top plate is provided on the upper surface of the base, and two other placement grooves are provided on the top plate near the placement groove of the base, and the other two placement grooves are located directly above the placement groove of the base. The purpose of such a setting is that during the use of the bushing structure, the top plate and the base are tightened by bolts to press each other inward to fix the outside of the sleeve.

[0010] Furthermore, the top plate is slidably connected to the top outer walls of the two sleeves through the other two placement grooves. The purpose of this arrangement is that during the use of the bushing structure, the top plate slides on the top outer walls of the sleeves through the placement grooves, and the sleeves are wrapped by the base and the top plate.

[0011] Furthermore, six screw holes are provided on the outer walls of the top plate, the six screw holes are distributed around the placement groove, and the six screw holes penetrate the top plate and extend to the inside of the base. The purpose of such arrangement is that during the use of the bushing structure, the screw holes fix the bolts in the base and the top plate, the bolts are threadedly connected in the screw holes of the base and the top plate, and the top plate and the base are locked by the six bolts.

[0012] Furthermore, bolts are threadedly connected on the inner walls of the six screw holes, and the bolts penetrate the top plate and extend to the inner wall of the base. The purpose of this arrangement is that during the use of the bushing structure, the top plate and the base are tightened by the bolts to press each other inward to fix the outside of the sleeve.

[0013] Furthermore, two slide grooves are provided on the bottom outer wall of the base, and the two slide grooves penetrate the base. The purpose of such a setting is that during the use of the bushing structure, a slide rod is provided in the slide groove to slide the fixed structure to adjust the fixed position according to the length of the shaft rod.

[0014] The utility model has the following beneficial effects:

[0015] (1) The utility model provides a placement groove and a base. During the use of the bushing structure, the bushing structure is connected to the outer wall of the shaft rod through a thread, the sleeves of the two bushing structures are slid into the placement groove of the base, and then the top plate is slid onto the top outer wall of the sleeve through the placement groove. The sleeve is wrapped by the base and the top plate, and the top plate and the base are locked by six bolts. After the top plate and the base are tightened by the bolts, they are pressed inwardly against each other to fix the outside of the sleeve. The sleeve is squeezed and fixed on the shaft rod by the base and the top plate and is not easy to fall off, thereby enhancing the stability of the connection between the bushing structure and the shaft rod.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the base and bushing structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the top plate and bushing structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the split structure of the utility model;

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] In the figure: 1. fixing structure; 100. screw hole; 101. base; 102. slide groove; 103. placement groove; 104. top plate; 105. bolt; 2. bushing structure; 201. sleeve; 202. clamping ring; 203. thread. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 - Figure 4 As shown, the utility model is a polyurethane bushing, comprising a fixed structure 1 and a bushing structure 2, the bushing structure 2 is clamped on the inner wall of the fixed structure 1, the fixed structure 1 comprises a base 101, the bushing structure 2 comprises two sleeves 201, one end of the two sleeves 201 is welded with a clamping ring 202, the inner walls of the two sleeves 201 and the clamping ring 202 are provided with threads 203, the top outer wall of the base 101 is provided with two placement grooves 103, and the two sleeves 201 are slidably connected to the inner walls of the placement grooves 103. The purpose of such arrangement is that during the use of the bushing structure 2, the bushing structure 2 is threadedly connected to the outer wall of the shaft rod through the thread 203, and the sleeve 201 and the thread 203 cooperate to protect the outer wall of the shaft rod from wear. When the two bushing structures 2 need to be locked on the shaft rod, the sleeves 201 of the two bushing structures 2 are slid into the placement groove 103 of the base 101, and then the top plate 104 is slid on the top outer wall of the sleeve 201 through the placement groove 103, and the sleeve 201 is wrapped by the base 101 and the top plate 104, and then the top plate 104 and the base 101 are locked by six bolts 105. After the top plate 104 and the base 101 are tightened by the bolts 105, they squeeze each other inward to fix the outside of the sleeve 201, and the sleeve 201 is squeezed and fixed on the shaft rod by the base 101 and the top plate 104, and is not easy to fall off, thereby enhancing the stability of the connection between the bushing structure 2 and the shaft rod.

[0026] The upper surface of the base 101 is provided with a top plate 104, and the top plate 104 is provided with two other placement grooves 103 near the placement groove 103 of the base 101, and the other two placement grooves 103 are located directly above the placement groove 103 of the base 101. The purpose of such arrangement is that during the use of the bushing structure 2, the top plate 104 and the base 101 are tightened by the bolts 105 to press each other inward to fix the outside of the sleeve 201.

[0027] The top plate 104 is slidably connected to the top outer walls of the two sleeves 201 through the other two placement grooves 103. The purpose of this arrangement is that during the use of the bushing structure 2, the top plate 104 slides on the top outer walls of the sleeves 201 through the placement grooves 103, and the sleeves 201 are wrapped by the base 101 and the top plate 104.

[0028] Six screw holes 100 are provided on the outer walls of the top plate 104, and the six screw holes 100 are distributed around the placement groove 103. The six screw holes 100 penetrate the top plate 104 and extend to the inside of the base 101. The purpose of such arrangement is that during the use of the bushing structure 2, the screw holes 100 fix the bolts 105 in the base 101 and the top plate 104, and the bolts 105 are threadedly connected in the screw holes 100 of the base 101 and the top plate 104, and the top plate 104 and the base 101 are locked by the six bolts 105.

[0029] The inner walls of the six screw holes 100 are threadedly connected with bolts 105, which penetrate the top plate 104 and extend to the inner wall of the base 101. The purpose of this arrangement is that during the use of the bushing structure 2, the top plate 104 and the base 101 are tightened by the bolts 105 and squeeze each other inward to fix the outside of the sleeve 201.

[0030] Two slide grooves 102 are provided on the bottom outer wall of the base 101, and the two slide grooves 102 penetrate the base 101. The purpose of such arrangement is that during the use of the bushing structure 2, a slide rod is arranged in the slide groove 102 to slide the fixing structure 1 to adjust the fixing position according to the length of the shaft rod.

[0031] When in use, during the use of the bushing structure 2, the bushing structure 2 is threadedly connected to the outer wall of the shaft rod through the thread 203, and the sleeve 201 and the thread 203 cooperate to protect the outer wall of the shaft rod from wear. When the two bushing structures 2 need to be locked on the shaft rod, the sleeves 201 of the two bushing structures 2 are slid into the placement groove 103 of the base 101, and then the top plate 104 is slid on the top outer wall of the sleeve 201 through the placement groove 103, and the sleeve 201 is wrapped by the base 101 and the top plate 104, and then the top plate 104 and the base 101 are locked by six bolts 105. After the top plate 104 and the base 101 are tightened by the bolts 105, they squeeze each other inward to fix the outside of the sleeve 201. The sleeve 201 is squeezed and fixed on the shaft rod by the base 101 and the top plate 104 and is not easy to fall off, thereby enhancing the stability of the connection between the bushing structure 2 and the shaft rod.

[0032] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A polyurethane bushing, comprising a fixing structure (1) and a bushing structure (2), characterized in that: The bushing structure (2) is clamped on the inner wall of the fixed structure (1), the fixed structure (1) comprises a base (101), the bushing structure (2) comprises two sleeves (201), one end of the two sleeves (201) is welded with a clamping ring (202), the inner walls of the two sleeves (201) and the clamping ring (202) are provided with threads (203), the top outer wall of the base (101) is provided with two placement grooves (103), and the two sleeves (201) are slidably connected to the inner walls of the placement grooves (103).

2. The polyurethane bushing according to claim 1, characterized in that: A top plate (104) is provided on the upper surface of the base (101), and two other placement grooves (103) are provided on the top plate (104) near the placement groove (103) of the base (101). The other two placement grooves (103) are located directly above the placement groove (103) of the base (101).

3. The polyurethane bushing according to claim 2, characterized in that: The top plate (104) is slidably connected to the top outer walls of the two sleeves (201) via the other two placement grooves (103).

4. The polyurethane bushing according to claim 2, characterized in that: Six screw holes (100) are provided on the outer walls around the top plate (104), the six screw holes (100) are distributed around the placement groove (103), and the six screw holes (100) penetrate the top plate (104) and extend to the inside of the base (101).

5. The polyurethane bushing according to claim 4, characterized in that: Bolts (105) are threadedly connected to the inner walls of the six screw holes (100), and the bolts (105) penetrate the top plate (104) and extend to the inner wall of the base (101).

6. The polyurethane bushing according to claim 1, characterized in that: Two slide grooves (102) are provided on the bottom outer wall of the base (101), and the two slide grooves (102) penetrate the base (101).

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