Compression bolt for damping belt pulley of automobile

Abstract

The utility model relates to the technical field of compression bolts, and discloses an automobile damping belt pulley compression bolt which comprises a bolt body and a connecting structure, the connecting structure is installed on the inner wall of the bolt body, the bolt body comprises a connecting block, a fixing block is arranged on the inner wall of the connecting block, an inserting groove is formed in the outer wall of the fixing block, and the connecting block is connected with the inserting groove. Inserting rods are inserted into the inner walls of the inserting grooves, the outer walls of the tops of the connecting blocks are sleeved with ferrules, and the inserting rods are located on the upper surfaces of the ferrules. Through the arrangement of the inserting rod and the ferrule, the inserting rod is inserted into the inserting groove of the fixing block, the top of the ferrule is limited and fixed through the inserting rod, meanwhile, the fixing block and the inserting rod are matched to enhance the tolerance of the top end of the connecting block, and when the abraded ferrule needs to be replaced, the inserting rod is pulled out of the inserting groove, then the first clamping block of the ferrule moves upwards from the interior of the clamping groove, and then the abraded ferrule is replaced. And the clamping block II connected with the ferrule is taken out from the limiting groove, and the ferrule and the connecting block are separated, so that the flexibility of the bolt main body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressing bolt devices, specifically to a pressing bolt for an automotive shock-absorbing pulley. Background Technique

[0002] With the rapid development of railway freight transportation, the proportion of railway freight transportation in the entire logistics transportation is increasing. Among them, the types of railway freight transportation are diverse. To meet the power supply needs of transport vehicles, a power generation device needs to be installed on such transport vehicles to continuously supply power to the transport vehicles.

[0003] The application number is CN201922280722.8, which discloses an installation structure of a driving pulley of an axle-end generator for a railway freight car, which consists of a top sleeve, a driving pulley, a draw-off sleeve, an axle-end gland, a lock washer, a bolt, a bearing seal seat, a bearing device, and an axle. The bearing device, the bearing seal seat, the top sleeve, the driving pulley, and the draw-off sleeve are sequentially sleeved on the axle along the axle body to the axle head direction. The top sleeve is located between the bearing seal seat and the driving pulley. One end face of the top sleeve contacts and presses tightly against the bearing seal seat, and the other end face of the top sleeve contacts the driving pulley. The driving pulley presses tightly against the top sleeve. There is a certain distance between the inner circle of the driving pulley hub and the outer circle of the axle. A draw-off sleeve is installed in the gap between the driving pulley and the axle. The axle-end gland is screwed into the threaded hole at the end of the axle through the lock washer and the bolt to tightly press the draw-off sleeve. The utility model is simple to operate, easy to install, convenient to disassemble, and safe and reliable. It can save time, improve work efficiency, and has high practical value.

[0004] The installation structure of the driving pulley of the axle-end generator for a railway freight car disclosed in the above document has the following defects: When the pulley is installed, it is fixed to the generator through bolts and lock washers. A large amount of vibration will be generated when the pulley rotates, and the pressure will rush towards one end of the bolt. When the bolt head limits and fixes one end of the pulley, a more resilient structure needs to be set to make the bolt resist the impact of the pressure. Otherwise, the bolt may be damaged by external force impact, causing the pulley to malfunction.

[0005] It can be seen that the existing pulley installation structure does not have the function of enhancing the tolerance of the bolt head, and it is necessary to improve the existing deficiencies to provide a function that can enhance the tolerance of the bolt head. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a pressing bolt for an automotive shock-absorbing pulley to solve the problems raised in the above background technique.

[0007] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0008] The utility model relates to a pressing bolt for an automotive shock-absorbing pulley, which comprises a bolt body and a connecting structure. The connecting structure is installed on the inner wall of the bolt body. The bolt body includes a connecting block. A fixing block is arranged on the inner wall of the connecting block. A slot is formed on the outer wall of the fixing block. A plug rod is inserted into the inner wall of the slot. A collar is sleeved on the top outer wall of the connecting block. The plug rod is located on the upper surface of the collar. The purpose of such a setting is that during the use of the pressing bolt, a nut is threadedly connected to the screw rod to fix the pulley on the generator. The connecting block limits one side of the pulley. A pin is inserted into the perforation to reduce the impact force of the pulley on the connecting block. The collar strengthens the periphery of the connecting block, improving the bearing capacity of the connecting block. The two sides of the collar are fixed in the clamping slots of the connecting block through the first clamping blocks. The other two sides of the collar are limited in the connecting block through the two limiting slots, so that the periphery of the collar is fixed outside the connecting block. The plug rod is inserted into the slot of the fixing block to limit and fix the top of the collar. At the same time, the fixing block and the plug rod cooperate to enhance the bearing capacity of the top end of the connecting block. When it is necessary to replace the worn collar, the plug rod is pulled out of the slot, and then the first clamping block of the collar is lifted upward from the clamping slot, and the second clamping block connected to the collar is taken out of the limiting slot, and the collar is disengaged from the connecting block, improving the flexibility of the bolt body.

[0009] Further, two clamping slots and limiting slots are formed on the upper surface of the connecting block, and the clamping slots and the limiting slots are alternately distributed on the upper surface of the connecting block. The purpose of such a setting is that during the use of the pressing bolt, the clamping slots and the limiting slots respectively limit the periphery of the collar.

[0010] Further, two first clamping blocks and two second clamping blocks are respectively and evenly arranged on the inner wall of the collar, and the two first clamping blocks and the two second clamping blocks are alternately distributed on the inner wall around the collar. The purpose of such a setting is that during the use of the pressing bolt, the two sides of the collar are fixed in the clamping slots of the connecting block through the first clamping blocks, and the other two sides of the collar are limited in the connecting block through the two limiting slots.

[0011] Further, the two first clamping blocks are inserted into the inner walls of the two clamping slots, and the two second clamping blocks are located on the inner walls of the two limiting slots. The purpose of such a setting is that during the use of the pressing bolt, the two sides of the collar are fixed in the clamping slots, and the other two sides of the collar are limited in the limiting slots.

[0012] Further, a screw rod is arranged on the lower surface of the connecting block. The purpose of such a setting is that during the use of the pressing bolt, a nut is threadedly connected to the screw rod to fix the pulley on the generator, and the connecting block limits one side of the pulley.

[0013] Further, a perforation is formed on the outer wall of one side at the top of the screw rod. The purpose of such a setting is that during the use of the pressing bolt, a pin is inserted into the perforation to reduce the impact force of the pulley on the connecting block.

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

[0015] (1) Through the arrangement of the insertion rod and the ferrule, the insertion rod is inserted into the slot of the fixed block, and the top of the ferrule is limited and fixed by the insertion rod. At the same time, the cooperation of the fixed block and the insertion rod enhances the tolerance of the top of the connecting block. When it is necessary to replace the worn ferrule, the insertion rod is pulled out of the slot, and then the first clamping block of the ferrule is lifted upward from the clamping slot, and the second clamping block connected to the ferrule is taken out of the limiting slot, and the ferrule is disengaged from the connecting block, which improves the flexibility of the bolt body.

[0016] Of course, it is not necessary for any product implementing the utility model to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

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

[0019] Figure 2 It is a schematic diagram of the bolt body structure of the present utility model;

[0020] Figure 3 It is a schematic diagram of the bottom structure of the bolt body of the present utility model;

[0021] Figure 4 It is a schematic diagram of the disassembled structure of the present utility model;

[0022] In the drawings, the list of components represented by each reference numeral is as follows:

[0023] In the figure: 1. Bolt body; 101. Screw rod; 102. Perforation; 103. Connecting block; 104. Clamping slot; 105. Limiting slot; 106. Fixed block; 107. Slot; 2. Connecting structure; 201. Ferrule; 202. First clamping block; 203. Second clamping block; 204. Insertion rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[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 tightening bolt for a vibration-damping pulley of an automobile, comprising a bolt body 1 and a connecting structure 2, wherein the connecting structure 2 is mounted on the inner wall of the bolt body 1, and the bolt body 1 comprises a connecting block 103, a fixing block 106 is arranged on the inner wall of the connecting block 103, a slot 107 is opened on the outer wall of the fixing block 106, an insert rod 204 is inserted into the inner wall of the slot 107, a ferrule 201 is sleeved on the top outer wall of the connecting block 103, and the insert rod 204 is located on the upper surface of the ferrule 201. The purpose of such arrangement is that during the use of the clamping bolt, the threaded connection nut on the screw rod 101 fixes the pulley on the generator, and the connection block 103 limits one side of the pulley, and the pin is inserted into the through hole 102 to reduce the impact force of the pulley on the connection block 103. The ring 201 reinforces the surrounding of the connection block 103, thereby improving the tolerance of the connection block 103. The two sides of the ring 201 are fixed in the groove 104 of the connection block 103 through the clamping block 202, and the other two sides of the ring 201 are limited in the connection block 103 through the two limiting grooves 105, so that the surrounding of the ring 201 It is fixed on the outside of the connecting block 103, and the insert rod 204 is inserted into the slot 107 of the fixing block 106. The top of the ring 201 is limited and fixed by the insert rod 204. At the same time, the fixing block 106 and the insert rod 204 cooperate to enhance the tolerance of the top of the connecting block 103. When the worn ring 201 needs to be replaced, the insert rod 204 is pulled out of the slot 107, and then the block 1 202 of the ring 201 is pulled upward from the slot 104, and the block 2 203 connected to the ring 201 is taken out of the limiting slot 105, and the ring 201 can be disconnected from the connecting block 103, thereby improving the flexibility of the bolt body 1.

[0026] The upper surface of the connecting block 103 is provided with two clamping grooves 104 and limiting grooves 105, which are staggeredly distributed on the upper surface of the connecting block 103. The purpose of such arrangement is that during the use of the clamping bolt, the clamping grooves 104 and limiting grooves 105 respectively limit the surroundings of the ferrule 201.

[0027] On the inner wall of the ferrule 201, two first clamping blocks 202 and a second clamping block 203 are evenly provided respectively. The two first clamping blocks 202 and the second clamping block 203 are staggered and distributed on the inner wall around the ferrule 201. The purpose of such a setting is that during the use of the compression bolt, the two sides of the ferrule 201 are fixed in the clamping grooves 104 of the connection block 103 through the first clamping blocks 202, and the other two sides of the ferrule 201 are limited in the connection block 103 through the two limiting grooves 105.

[0028] The two first clamping blocks 202 are inserted into the inner walls of the two clamping grooves 104, and the two second clamping blocks 203 are located on the inner walls of the two limiting grooves 105. The purpose of such a setting is that during the use of the compression bolt, the two sides of the ferrule 201 are fixed in the clamping grooves 104, and the other two sides of the ferrule 201 are limited in the limiting grooves 105.

[0029] The lower surface of the connection block 103 is provided with a screw rod 101. The purpose of such a setting is that during the use of the compression bolt, a nut is threadedly connected to the screw rod 101 to fix the pulley on the generator, and one side of the pulley is limited by the connection block 103.

[0030] A perforation 102 is formed on the outer wall of one side at the top of the screw rod 101. The purpose of such a setting is that during the use of the compression bolt, a pin is inserted into the perforation 102 to reduce the impact force of the pulley on the connection block 103.

[0031] During use, during the use of the compression bolt, a nut is threadedly connected to the screw rod 101 to fix the pulley on the generator, one side of the pulley is limited by the connection block 103, a pin is inserted into the perforation 102 to reduce the impact force of the pulley on the connection block 103, the ferrule 201 reinforces the periphery of the connection block 103, improving the tolerance of the connection block 103. The two sides of the ferrule 201 are fixed in the clamping grooves 104 of the connection block 103 through the first clamping blocks 202, and the other two sides of the ferrule 201 are limited in the connection block 103 through the two limiting grooves 105, so that the periphery of the ferrule 201 is fixed outside the connection block 103. A plug rod 204 is inserted into the slot 107 of the fixing block 106 to limit and fix the top of the ferrule 201. At the same time, the fixing block 106 and the plug rod 204 cooperate to enhance the tolerance at the top end of the connection block 103. When it is necessary to replace the worn ferrule 201, the plug rod 204 is pulled out from the slot 107, then the first clamping block 202 of the ferrule 201 is lifted upward from the clamping groove 104, and the second clamping block 203 connected to the ferrule 201 is taken out from the limiting groove 105, and the ferrule 201 is disengaged from the connection block 103, improving the flexibility of the bolt body 1.

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

Claims

1. The pressing bolt of an automotive shock-absorbing pulley, comprising a bolt body (1) and a connecting structure (2), characterized in that: The connection structure (2) is installed on the inner wall of the bolt body (1). The bolt body (1) includes a connection block (103). A fixing block (106) is provided on the inner wall of the connection block (103). A slot (107) is formed on the outer wall of the fixing block (106). A plug rod (204) is inserted into the inner wall of the slot (107). A collar (201) is sleeved on the top outer wall of the connection block (103). The plug rod (204) is located on the upper surface of the collar (201).

2. The pressing bolt of the automotive shock-absorbing pulley according to claim 1, characterized in that: Two clamping grooves (104) and a limiting groove (105) are formed on the upper surface of the connection block (103). The clamping grooves (104) and the limiting groove (105) are alternately distributed on the upper surface of the connection block (103).

3. The pressing bolt of the automotive shock-absorbing pulley according to claim 1, wherein: Two first clamping blocks (202) and two second clamping blocks (203) are evenly provided on the inner wall of the collar (201). The two first clamping blocks (202) and the two second clamping blocks (203) are alternately distributed on the inner wall around the collar (201).

4. The pressing bolt of the automotive shock-absorbing pulley according to claim 3, wherein: The two first clamping blocks (202) are inserted into the inner walls of the two clamping grooves (104). The two second clamping blocks (203) are located in the inner walls of the two limiting grooves (105).

5. The pressing bolt of the automotive shock-absorbing pulley according to claim 1, characterized in that: A screw rod (101) is provided on the lower surface of the connection block (103).

6. The pressing bolt of the automotive shock-absorbing pulley according to claim 5, characterized in that: A perforation (102) is formed on the outer wall of one side of the top of the screw rod (101).

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