Press fitting device for chain wheel bearing of engineering machinery
By designing the sprocket bearing pressing device for the rotary pallet and cylinder push-pull rod system, the problems of cumbersome operation and low efficiency in the prior art are solved, and the effects of simplifying operation, improving efficiency and protecting oil seals are achieved.
Patent Information
- Application Number
- CN202422145276.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-02
AI Technical Summary
The existing mechanical sprocket bearings are cumbersome to operate during pressing, with high labor intensity, low efficiency, and poor fixed position accuracy.
A pressing device for construction machinery sprocket bearings is designed, using a rotary pallet and cylinder push-pull rod system, clamping the sprocket parts through a hinge flip block, and rotating the rotary pallet into the shaft, combining with cylinder two to reduce pressure loading force to protect the oil seal.
Simplifies the operation process, improves efficiency, reduces labor intensity, ensures fixed accuracy, and protects the oil seal from damage.
Smart Images
Figure CN223114551U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of mechanical sprocket bearing pressing, and particularly relates to a pressing device for an engineering machinery sprocket bearing. Background Technique
[0002] The pressing device for a sprocket bearing is a tool used to ensure the correct installation of a sprocket on parts such as a crankshaft. The correct assembly of the sprocket and the bearing is crucial for the normal operation of the machine. Therefore, a specially designed pressing device plays an important role in ensuring the assembly accuracy and improving the assembly efficiency.
[0003] When pressing the existing mechanical sprocket bearing, a general fixture is usually adopted. Before pressing, it is necessary to perform cumbersome steps to fix the sprocket on the fixture. Due to the large weight of the sprocket, not only the labor intensity is high and the efficiency is low, but also the operation is complex, and the position accuracy after fixation is poor. Therefore, we propose a pressing device for an engineering machinery sprocket bearing. Content of the Utility Model
[0004] The purpose of the utility model is to provide a pressing device for an engineering machinery sprocket bearing. By setting a rotary tray, specifically placing the sprocket part on the tray, and then starting the first cylinder to drive the push-pull rod to move forward, the push-pull rod drives the flipping block to flip under the action of the hinge. The clamping rod clamps and fixes the sprocket part in cooperation with the positioning rod and positions the sprocket part at the center. There is no need for cumbersome operations, the operation is simpler and more convenient, and the efficiency is higher. Since the rotary tray can rotate, it is convenient for the staff to insert the shaft into the sprocket part, solving the problems that when pressing the existing mechanical sprocket bearing, a general fixture is usually adopted, and before pressing, it is necessary to perform cumbersome steps to fix the sprocket on the fixture. Due to the large weight of the sprocket, not only the labor intensity is high and the efficiency is low, but also the operation is complex.
[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:
[0006] The utility model is a pressing device for an engineering machinery sprocket bearing, including a bed body. A tray is arranged at the center above the bed body. A sprocket part is arranged above the tray. Pressing components are arranged on the left and right sides of the sprocket part. The two pressing components are symmetrically arranged, and the parts included in the two pressing components are the same. A rotary tray is rotatably connected inside the tray. A fixing seat is fixedly connected to the top of the rotary tray. A cylinder cover is fixedly connected to the top of the fixing seat.
[0007] A cylinder bracket is provided inside the cylinder guard. Positioning rods are fixedly connected to both the left and right sides of the fixed seat. A first cylinder is fixedly connected to the front of the cylinder bracket by screws. A push-pull rod is fixedly connected to the output end of the back of the first cylinder. There is a turning block provided on the back of the fixed seat. A clamping rod is fixedly connected to the bottom of the turning block. Two hinges are rotatably connected to the top of the turning block by pins. By providing a rotary tray, specifically, the sprocket part is placed on the tray, and then the first cylinder is started to drive the push-pull rod to move forward. Then, under the action of the hinge, the push-pull rod drives the turning block to turn. The clamping rod clamps and fixes the sprocket part in cooperation with the positioning rod and positions the sprocket part at the center. There is no need for cumbersome operations, the operation is simpler and more convenient, and the efficiency is higher. Since the rotary tray can rotate, it is convenient for the staff to insert the shaft into the sprocket part.
[0008] Further, a middle shaft is fixedly connected to the bottom of the rotary tray. The bottom of the middle shaft penetrates through the tray and extends to the outside. The outer side of the middle shaft is rotationally connected to the inner ring of the tray. A thrust bearing is sleeved on the bottom of the rotary tray. The bottom of the thrust bearing is sleeved with the top of the tray. The sprocket part is pushed, so that it drives the rotary tray to rotate through the fixed seat. Then, the bottom of the rotary tray drives the middle shaft to rotate together. The rotary tray rotates on the tray through the thrust bearing, which can make the rotary tray rotate more smoothly.
[0009] Further, the bottom of the cylinder bracket is fixedly connected to the top of the fixed seat by screws. A stabilizing block is fixedly connected to the center of the top of the fixed seat by screws. The back of the push-pull rod penetrates through the stabilizing block and extends to the outside. The outer surface of the push-pull rod is slidably connected to the inner ring of the stabilizing block. The back of the push-pull rod is rotatably connected to the tops of the two hinges by pins. The front position of the turning block is rotatably connected to the fixed seat by a pin. The outer surface of the positioning rod contacts the outer surface of the sprocket part. The bottom of the sprocket part contacts the top of the rotary tray. Since the front position of the turning block is rotatably connected to the fixed seat by a pin, the push-pull rod will drive the bottom of the back of the turning block to drive the clamping rod to turn upward under the action of the hinge.
[0010] Further, the press-fitting assembly includes a fixed plate, the bottom of the fixed plate is fixedly connected to the top of the bed body, vertical plates are arranged on one side of the two fixed plates corresponding to each other, an oil cylinder is fixedly connected to the inner wall of the fixed plate, a second cylinder is arranged below the oil cylinder, one side of the second cylinder close to the fixed plate is fixedly connected to the surface of the fixed plate, and the output end of the second cylinder close to the vertical plate is fixedly connected to a connecting piece. By setting the connecting piece, specifically, the oil seal is sleeved on the left and right sides of the sprocket part, and then the second cylinder is started to drive the connecting piece to move the vertical plate closer to the sprocket part, and the oil seal is press-fitted through the bearing outer ring press head. Since the oil seal is made of rubber, the oil cylinder is not used for press-fitting to avoid damaging the oil seal due to over-tight press-fitting. Using the second cylinder can reduce the press-fitting pressure and protect the oil seal from damage.
[0011] Further, two slide rails are fixedly connected to the top of the bed body, two ball linear guides are fixedly connected to the bottom of the tray and the bottom of the vertical plate respectively, the ball linear guides are slidably connected to the slide rails, the output end of the oil cylinder close to the vertical plate is fixedly connected to a top sleeve, a bearing outer ring press head is fixedly connected to the inside of the vertical plate, a circular hole is opened inside the bearing outer ring press head, and an end cover limiting block is inserted into the circular hole opened inside the bearing outer ring press head on the right side. When the shaft needs to be press-fitted, the end cover limiting block is placed into the circular hole inside the bearing outer ring press head on the right side, and then the oil cylinder is started again to drive the top sleeve to move closer to the vertical plate to push it, and the shaft after installation is press-fitted. The end cover limiting block plays a limiting role for positioning the shaft, which can better push the shaft. The bearing outer ring press head without the end cover limiting block presses against the bearing, and the position where the end cover limiting block is installed pushes the shaft.
[0012] The utility model has the following beneficial effects:
[0013] 1. By setting the rotary tray, specifically, the sprocket part is placed on the tray, and then the first cylinder is started to drive the push rod to move forward. Then, the push rod drives the flipping block to flip under the action of the hinge, and the clamping rod clamps and fixes the sprocket part in cooperation with the positioning rod and positions the sprocket part at the center. There is no need for cumbersome operations, the operation is simpler and more convenient, and the efficiency is higher. Since the rotary tray can rotate, it is convenient for the staff to insert the shaft into the sprocket part.
[0014] 2. By setting the connecting piece, specifically, the oil seal is sleeved on the left and right sides of the sprocket part, and then the second cylinder is started to drive the connecting piece to move the vertical plate closer to the sprocket part, and the oil seal is press-fitted through the bearing outer ring press head. Since the oil seal is made of rubber, the oil cylinder is not used for press-fitting to avoid damaging the oil seal due to over-tight press-fitting. Using the second cylinder can reduce the press-fitting pressure and protect the oil seal from damage.
[0015] Of course, it is not necessary for any product implementing the present utility model to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] 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 describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0017] Figure 1 Schematic diagram of the overall structure of the present utility model;
[0018] Figure 2 Schematic diagram of the front sectional structure of the bed body of the present utility model;
[0019] Figure 3 Schematic diagram of the overall structure of the tray of the present utility model;
[0020] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of A in the present utility model;
[0021] Figure 5 Schematic diagram of the right sectional structure of the tray of the present utility model.
[0022] In the drawings, the list of components represented by each reference numeral is as follows:
[0023] 1, bed body; 11, tray; 111, sprocket part; 112, rotary tray; 21, intermediate shaft; 22, thrust bearing; 23, ball linear guide; 113, fixed seat; 31, positioning rod; 32, stabilizing block; 33, push-pull rod; 34, cylinder 1; 35, cylinder bracket; 114, flipping block; 41, clamping rod; 42, hinge; 12, press-fitting assembly; 121, fixing plate; 122, vertical plate; 221, bearing outer ring press head; 222, end cover limiting block; 123, oil cylinder; 231, top sleeve; 124, cylinder 2; 241, connecting piece; 13, cylinder guard; 14, slide rail. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0025] Please refer to Figures 1-5As shown in the figure, the utility model is a press-fitting device for a sprocket bearing of a construction machinery, including a bed body 1. At the center above the bed body 1, there is a tray 11. Above the tray 11, there is a sprocket part 111. Press-fitting components 12 are arranged on both the left and right sides of the sprocket part 111. The two press-fitting components 12 are symmetrically arranged, and the parts contained inside the two press-fitting components 12 are the same. Inside the tray 11, there is a rotating tray 112 rotatably connected. At the top of the rotating tray 112, there is a fixed seat 113 fixedly connected. At the top of the fixed seat 113, there is a cylinder guard 13 fixedly connected.
[0026] Inside the cylinder guard 13, there is a cylinder bracket 35. Positioning rods 31 are fixedly connected to both the left and right sides of the fixed seat 113. On the front of the cylinder bracket 35, a first cylinder 34 is fixedly connected by screws. At the output end on the back of the first cylinder 34, there is a push-pull rod 33. On the back of the fixed seat 113, there is a flipping block 114. At the bottom of the flipping block 114, there is a clamping rod 41 fixedly connected. At the top of the flipping block 114, there are two hinges 42 rotatably connected by pins. By setting the rotating tray 112, specifically, the sprocket part 111 is placed on the tray 11, and then the first cylinder 34 is started to drive the push-pull rod 33 to move forward. Then, under the action of the hinge 42, the push-pull rod 33 drives the flipping block 114 to flip. The clamping rod 41 clamps and fixes the sprocket part 111 under the cooperation with the positioning rod 31, and positions the sprocket part 111 at the center. There is no need for cumbersome operations, the operation is simpler and more convenient, and the efficiency is higher. Since the rotating tray 112 can rotate, it is convenient for the staff to insert the shaft into the sprocket part 111.
[0027] At the bottom of the rotating tray 112, there is an intermediate shaft 21 fixedly connected. The bottom of the intermediate shaft 21 penetrates through the tray 11 and extends to the outside. The outer side of the intermediate shaft 21 is rotatably connected to the inner ring of the tray 11. A thrust bearing 22 is sleeved at the bottom of the rotating tray 112, and the bottom of the thrust bearing 22 is sleeved with the top of the tray 11.
[0028] The bottom of the cylinder bracket 35 is fixedly connected to the top of the fixed seat 113 by screws. At the center of the top of the fixed seat 113, a stabilizing block 32 is fixedly connected by screws. The back of the push-pull rod 33 penetrates through the stabilizing block 32 and extends to the outside. The outer surface of the push-pull rod 33 is slidably connected to the inner ring of the stabilizing block 32. The back of the push-pull rod 33 is rotatably connected to the tops of the two hinges 42 by pins. The front position of the flipping block 114 is rotatably connected to the fixed seat 113 by a pin. The outer surface of the positioning rod 31 contacts the outer surface of the sprocket part 111, and the bottom of the sprocket part 111 contacts the top of the rotating tray 112.
[0029] The press-fitting assembly 12 includes a fixing plate 121, the bottom of the fixing plate 121 is fixedly connected to the top of the bed body 1, vertical plates 122 are arranged on one side of the two fixing plates 121 corresponding to each other, an oil cylinder 123 is fixedly connected to the inner wall of the fixing plate 121, a second cylinder 124 is arranged below the oil cylinder 123, one side of the second cylinder 124 close to the fixing plate 121 is fixedly connected to the surface of the fixing plate 121, and the output end of the second cylinder 124 on the side close to the vertical plate 122 is fixedly connected to a connecting member 241. By providing the connecting member 241, specifically, the oil seal is sleeved on the left and right sides of the sprocket part 111, and then the second cylinder 124 is started to drive the connecting member 241 to move the vertical plate 122 closer to the sprocket part 111, and the oil seal is press-fitted by the bearing outer ring press head 221. Since the oil seal is made of rubber, the oil cylinder 123 is not used for press-fitting to avoid damaging the oil seal due to over-tight press-fitting. Using the second cylinder 124 can reduce the press-fitting pressure and protect the oil seal from damage.
[0030] Two slide rails 14 are fixedly connected to the top of the bed body 1, two ball linear guide rails 23 are fixedly connected to the bottom of the tray 11 and the bottom of the vertical plate 122, the ball linear guide rails 23 are slidably connected to the slide rails 14, the output end of the oil cylinder 123 on the side close to the vertical plate 122 is fixedly connected to a top sleeve 231, a bearing outer ring press head 221 is fixedly connected to the inside of the vertical plate 122, a circular hole is opened inside the bearing outer ring press head 221, and an end cover limiting block 222 is inserted into the circular hole opened inside the bearing outer ring press head 221 on the right side.
[0031] A specific application of this embodiment is:
[0032] During use, place the sprocket part 111 on the tray 11, making the front position of the sprocket part 111 contact the positioning rod 31. Subsequently, start the first cylinder 34 to drive the push-pull rod 33 to move forward. Then, the push-pull rod 33 slides on the stabilizing block 32. At the same time, the push-pull rod 33 drives the flipping block 114 to flip under the action of the hinge 42. Since the front position of the flipping block 114 is rotatably connected to the fixed seat 113 through a pin shaft, the bottom of the back surface of the flipping block 114 drives the clamping rod 41 to flip upward, making the clamping rod 41 contact the back surface position of the sprocket part 111. The clamping rod 41 clamps and fixes the sprocket part 111 under the cooperation with the positioning rod 31 and positions the sprocket part 111 at the center. It can quickly clamp and fix the sprocket part 111 without cumbersome operations, with simpler and more convenient operation and higher efficiency. Subsequently, place the bearings on the left and right sides of the sprocket part 111. After the placement is completed, start the oil cylinders 123 on the left and right sides simultaneously. The oil cylinders 123 drive the top sleeves 231 to approach the vertical plates 122. When the top sleeves 231 contact the vertical plates 122, they will push the vertical plates 122. The vertical plates 122 then slide on the slide rails 14 through the ball linear guides 23 at the bottom. Subsequently, the bearing outer ring press heads 221 on the vertical plates 122 will contact the bearing outer rings inside the sprocket part 111 and press-fit the bearings. After the press-fitting is completed, the oil cylinders 123 drive the top sleeves 231 to reset;
[0033] Subsequently, the vertical plate 122 is pulled away from the sprocket part 111, and then the sprocket part 111 is pushed so that it drives the rotary tray 112 to rotate through the fixed seat 113. Then, the bottom of the rotary tray 112 drives the intermediate shaft 21 to rotate together. The rotary tray 112 rotates on the tray 11 through the thrust bearing 22, causing the sprocket part 111 to rotate by ninety degrees. Subsequently, the shaft is placed into the pressed bearing, and then the sprocket part 111 is rotated in the reverse direction to reset it. The end - cap limiting block 222 is placed into the circular hole inside the bearing outer - ring press head 221 on the right side. Subsequently, the oil cylinder 123 is started again to drive the top sleeve 231 to approach the vertical plate 122 and push it, performing press - fitting on the installed shaft. The end - cap limiting block 222 plays a limiting role for positioning the shaft, enabling better pushing of the shaft. The bearing outer - ring press head 221 without the end - cap limiting block 222 holds the bearing, and the position where the end - cap limiting block 222 is installed pushes the shaft. After press - fitting, the oil cylinder 123 drives the top sleeve 231 to reset, then the vertical plate 122 is pulled apart, and the end - cap limiting block 222 is taken out. Then, oil seals are sleeved on the left and right sides of the sprocket part 111. Subsequently, the air cylinder 124 is started to drive the connecting part 241 to approach the vertical plate 122, bringing the vertical plate 122 closer to the sprocket part 111, and then the oil seal is press - fitted through the bearing outer - ring press head 221. The circular hole inside the bearing outer - ring press head 221 is used to accommodate the shaft at the center of the sprocket part 111, thus not affecting the press - fitting of the oil seal. Since the oil seal is made of rubber, the oil cylinder 123 is not used for press - fitting to avoid damaging the oil seal due to over - tight press - fitting. Using the air cylinder 124 can reduce the press - fitting pressure and protect the oil seal from damage. Finally, after press - fitting is completed, the two vertical plates 122 are pulled out away from the sprocket part 111. Subsequently, the air cylinder 34 is started to drive the push - pull rod 33 to move backward. Then, the push - pull rod 33 drives the flipping block 114 to reset through the hinge 42, and the clamping rod 41 flips downward to reset, releasing the fixation of the sprocket part 111, and then the sprocket part 111 can be taken out.
[0034] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above - mentioned terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0035] 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, many modifications and variations can be made according to the content of this specification. 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 understand and utilize the present utility model well. The present utility model is only limited by the claims and their full scope and equivalents.
Claims
1. A press-fitting device for a sprocket bearing of construction machinery, comprising a bed body (1), a tray (11) is arranged at the center above the bed body (1), a sprocket part (111) is arranged above the tray (11), and press-fitting assemblies (12) are arranged on both the left side and the right side of the sprocket part (111), characterized in that: The two press-fitting components (12) are symmetrically arranged, and the parts contained inside the two press-fitting components (12) are the same. A rotary tray (112) is rotatably connected inside the tray (11). A fixed seat (113) is fixedly connected to the top of the rotary tray (112), and a cylinder guard (13) is fixedly connected to the top of the fixed seat (113). A cylinder bracket (35) is arranged inside the cylinder guard (13). Positioning rods (31) are fixedly connected to both the left and right sides of the fixed seat (113). A cylinder one (34) is fixedly connected to the front of the cylinder bracket (35) by screws. A push-pull rod (33) is fixedly connected to the output end of the back of the cylinder one (34). A turning block (114) is arranged on the back of the fixed seat (113). A clamping rod (41) is fixedly connected to the bottom of the turning block (114). Two hinges (42) are rotatably connected to the top of the turning block (114) by pins.
2. The press-fitting device for a sprocket bearing of construction machinery according to claim 1, characterized in that, An intermediate shaft (21) is fixedly connected to the bottom of the rotary tray (112). The bottom of the intermediate shaft (21) penetrates through the tray (11) and extends to the outside. The outer side of the intermediate shaft (21) is rotatably connected to the inner ring of the tray (11). A thrust bearing (22) is sleeved on the bottom of the rotary tray (112), and the bottom of the thrust bearing (22) is sleeved on the top of the tray (11).
3. The press-fitting device for a sprocket bearing of construction machinery according to claim 2, wherein, The bottom of the cylinder bracket (35) is fixedly connected to the top of the fixed seat (113) by screws. A stabilizing block (32) is fixedly connected to the center of the top of the fixed seat (113) by screws. The back of the push-pull rod (33) penetrates through the stabilizing block (32) and extends to the outside. The outer surface of the push-pull rod (33) is slidably connected to the inner ring of the stabilizing block (32).
4. The press-fitting device for a sprocket bearing of construction machinery according to claim 3, characterized in that, The back of the push-pull rod (33) is rotatably connected to the top of the two hinges (42) by pins. The turning block (114) is rotatably connected to the fixed seat (113) by pins at the front position. The outer surface of the positioning rod (31) is in contact with the outer surface of the sprocket part (111), and the bottom of the sprocket part (111) is in contact with the top of the rotary tray (112).
5. The press-fitting device for a sprocket bearing of construction machinery according to claim 4, characterized in that, The press-fitting component (12) includes a fixing plate (121). The bottom of the fixing plate (121) is fixedly connected to the top of the bed body (1). Vertical plates (122) are arranged on one side of the two fixing plates (121) corresponding to each other. An oil cylinder (123) is fixedly connected to the inner wall of the fixing plate (121).
6. The press-fitting device for a sprocket bearing of construction machinery according to claim 5, wherein, A cylinder two (124) is arranged below the oil cylinder (123). One side of the cylinder two (124) close to the fixing plate (121) is fixedly connected to the surface of the fixing plate (121). A connecting piece (241) is fixedly connected to the output end of one side of the cylinder two (124) close to the vertical plate (122).
7. A press-fitting device for a sprocket bearing of a construction machinery, according to claim 5, characterized in that, Two slide rails (14) are fixedly connected to the top of the bed body (1). Two ball linear guide rails (23) are fixedly connected to the bottom of the tray (11) and the bottom of the vertical plate (122). The ball linear guide rails (23) are slidably connected to the slide rails (14).
8. The press-fitting device for a sprocket bearing of a construction machinery according to claim 5, characterized in that, One output end of the oil cylinder (123) close to the vertical plate (122) is fixedly connected with a top sleeve (231). A bearing outer ring press head (221) is fixedly connected inside the vertical plate (122). A circular hole is formed inside the bearing outer ring press head (221). An end cover limit block (222) is inserted into the circular hole formed inside the bearing outer ring press head (221) on the right side.