Trundle support with plane bearing

Abstract

The utility model discloses a trundle support with a plane bearing, which comprises a mounting plate, a rotating plate is arranged below the mounting plate, a mounting groove is arranged at the bottom of the axis of the rotating plate, a rotating bearing is embedded in the mounting groove, and a bolt group for connection is arranged on the axis of the mounting plate and the axis of the rotating plate. According to the trundle, the mode that the first ball channel and the second ball channel are arranged in the protective cover and the mounting plate is replaced by the mode that the plane bearing is used, so that the trundle can work for a long time, the oil inlet nozzle capable of adding lubricating oil to the plane bearing is arranged at the bottom of the rotating plate, and the trundle does not need to be detached when the lubricating oil is added to the trundle; the mounting plate needs to bear all the weight of a vehicle body when the trundle works, when the trundle is overloaded, the mounting plate deforms, the ball way deforms, the mounting plate needs to be replaced, and the trundle can normally rotate even if the mounting plate deforms by using the plane bearing without replacing the plane bearing.

Description

Technical Field

[0001] The utility model relates to the technical field of transportation device auxiliary equipment, in particular to a caster bracket with a plane bearing. Background Art

[0002] Casters are a general term, including movable casters, fixed casters and movable casters with brakes. Movable casters are also called universal wheels, and their structure allows for full rotation. Casters are a common mechanical hardware accessory, which is used to facilitate the movement of the load-bearing equipment.

[0003] For example, Chinese patent: application number is 2013204937194, and the patent name is caster bracket, "including a mounting plate, a bracket body, a connecting piece, a bearing, and a ball and a protective cover located between the mounting plate and the bracket body, the mounting plate and the bracket body are connected by a connecting piece, the ball is located between the mounting plate and the protective cover, the bearing cooperates with the connecting piece, one end of the bracket body is provided with a recess that cooperates with the bearing, the recess and the bearing are interference fit, and the bracket body is an integrated structure." In the above technology, the first ball track and the second ball track for fixing the ball are respectively arranged on the protective cover and the mounting plate, and the caster bracket is a caster bracket. When the caster is working, it will continuously rotate 360 ​​degrees. During this process, the balls will continuously rotate along the first ball track and the second ball track. During this process, both the balls and the first ball track and the second ball track will continue to wear. When the caster has been working for a long time, the balls and the first ball track and the second ball track will have different degrees of wear. At this time, the worn parts need to be replaced to make the caster work normally. However, the cost of replacing the protective cover and the mounting plate will be very high, and the lubricating oil of the caster will be consumed very quickly when the caster is working. In the above technology, the caster needs to be disassembled when adding lubricating oil to the balls in the caster, which is very time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of the utility model is to provide a caster bracket with a plane bearing.

[0005] In order to achieve the above purpose, the utility model adopts the following scheme:

[0006] A caster bracket with a plane bearing comprises a mounting plate, a rotating plate is arranged below the mounting plate, a wheel bracket is fixed at the bottom of the rotating plate, a bearing mounting groove is arranged between the mounting plate and the rotating plate, a plane bearing is arranged in the bearing mounting groove, an oil inlet is arranged at the bottom of the plane bearing, an oil inlet nozzle connected to the oil inlet is arranged at the bottom of the rotating plate, a mounting groove is arranged at the bottom of the rotating plate axis, a rotating bearing is embedded in the mounting groove, and a bolt group for connection is arranged on the mounting plate and the rotating plate axis. The utility model can replace the first ball track and the second ball track by using a plane bearing. The protective cover and the mounting plate are installed in the caster, so that when the caster has been working for a long time and the ball and the first ball track and the second ball are severely worn and need to be replaced, only the plane bearing needs to be replaced, and there is no need to replace the protective cover and the mounting plate. In addition, an oil inlet nozzle for adding lubricating oil to the plane bearing is provided at the bottom of the rotating plate, so there is no need to disassemble the caster when adding lubricating oil to the caster. When the caster is working, the mounting plate needs to bear all the weight of the vehicle body. When the caster is overloaded, the mounting plate will be deformed, and the ball track will also be deformed. At this time, the mounting plate needs to be replaced. When the plane bearing is used, even if the mounting plate is deformed, there is no need to replace the plane bearing, and the caster can rotate normally.

[0007] As a further solution of the utility model, the bearing mounting groove includes a first annular groove arranged at the bottom of the mounting plate axis, a second annular groove is arranged at the top of the rotating plate axis, and the plane bearing is installed between the first annular groove and the second annular groove.

[0008] As a further solution of the utility model, the plane bearing includes annular plates respectively arranged in the first annular groove and the second annular groove, a V-shaped annular groove is provided on the side where the two annular plates are close to each other, a semicircular annular groove is provided at the bottom of the V-shaped annular groove, a first ball group is provided between the two V-shaped annular grooves, and the oil inlet is provided at the bottom of one of the annular plates.

[0009] As a preferred solution of the utility model, a plurality of positioning rods are sequentially arranged along the circumference at the bottom of the annular plate, and positioning grooves cooperating with the positioning rods are respectively arranged on the mounting plate and the rotating plate.

[0010] As a further solution of the utility model, the oil inlet nozzle includes a threaded through hole arranged on the rotating plate, one end of the oil inlet nozzle is inserted into the threaded through hole, a threaded barrel is threadedly connected to the lower end of the threaded through hole, a plug nozzle which can be inserted into the oil port is provided at the top of the threaded barrel, and an oil pipe interface is provided at the bottom of the threaded barrel.

[0011] As a preferred solution of the utility model, the oil inlet nozzle and the plug nozzle are both one-way valves.

[0012] As a further solution of the utility model, the rotating bearing includes a bearing outer ring embedded in a mounting groove, a bearing inner ring is rotatably arranged on the inner ring of the bearing outer ring, a ball raceway is arranged between the bearing outer ring and the bearing inner ring, and a second ball group is arranged in the ball raceway.

[0013] As a further solution of the utility model, the bolt group includes through holes respectively arranged on the mounting plate, the plane bearing, the rotating plate and the axis of the rotating bearing, a bolt is provided above the mounting plate, the bolt passes through the through holes on the mounting plate, the plane bearing, the rotating plate and the rotating bearing in sequence, and a nut threadedly connected to the bolt is provided at the bottom of the rotating bearing.

[0014] As a preferred solution of the utility model, a third annular groove is respectively provided on the side close to the mounting plate and the rotating plate, and the third annular groove is respectively arranged outside the first annular groove and the second annular groove, and a sealing ring is rotatably provided between the third annular grooves.

[0015] To sum up, the utility model has the following beneficial effects compared with the prior art: the utility model can use a plane bearing to replace the first ball track and the second ball track in the protective cover and the mounting plate, so that when the caster has been working for a long time and the balls and the first ball track and the second ball are severely worn and need to be replaced, only the plane bearing needs to be replaced, and there is no need to replace the protective cover and the mounting plate. In addition, an oil inlet nozzle for adding lubricating oil to the plane bearing is provided at the bottom of the rotating plate, so there is no need to disassemble the caster when adding lubricating oil to the caster. When the caster is working, the mounting plate needs to bear all the weight of the vehicle body. When the caster is overloaded, the mounting plate will be deformed, and the ball track will also be deformed, and the mounting plate needs to be replaced. When a plane bearing is used, even if the mounting plate is deformed, the caster can rotate normally without replacing the plane bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional view of the utility model.

[0017] Figure 2 This is one of the exploded views of the utility model.

[0018] Figure 3 This is the second exploded view of the utility model.

[0019] Figure 4 It is a cross-sectional view of the utility model.

[0020] Figure 5 For this utility model Figure 2 Magnified view at A in the middle.

[0021] Explanation of the reference numerals in the accompanying drawings: 1. mounting plate; 2. rotating plate; 3. wheel bracket; 20. first ball plate; 40. plane bearing; 60. oil inlet nozzle; 4. oil inlet port; 5. mounting groove; 80. rotating bearing; 90. bolt group: 21. first annular groove; 22. second annular groove; 41. annular plate; 42. V-shaped annular groove; 43. semicircular annular groove; 44. first ball group of guide rod: 45. multiple positioning rods; 46. positioning groove; 61. threaded through hole; 62. threaded barrel; 63. nozzle; 64. oil pipe interface; 81. bearing outer ring; 82. bearing inner ring; 83. ball raceway; 84. second ball group; 91. through hole; 92. bolt; 101. third annular groove; 102. sealing ring. DETAILED DESCRIPTION

[0022] The following specific implementation content provides a variety of different embodiments or examples for implementing the utility model. Of course, these are only embodiments or examples and are not intended to be limiting. In addition, repeated reference numerals may be used in different embodiments, such as repeated numbers and / or letters. These repetitions are for the purpose of simply and clearly describing the utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0023] In addition, space-related words may be used, such as "below", "lower side", "from the inside out", "above", "upper side" and similar words. These relative words are for the convenience of describing the relationship between one element or feature and another element or feature in the drawings. These spatial relative words include different orientations of the device in use or operation, as well as the orientations described in the drawings. The device may be turned to different orientations, rotations or other orientations, and the space-related adjectives used therein may also be interpreted in the same way. Therefore, it cannot be understood as a limitation on the utility model. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0024] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods: Figures 1 to 5 A caster bracket with a plane bearing is shown, including a mounting plate 1, a rotating plate 2 is provided below the mounting plate 1, a wheel bracket 3 is fixed at the bottom of the rotating plate 2, a bearing mounting groove 20 is provided between the mounting plate 1 and the rotating plate 2, a plane bearing 40 is provided in the bearing mounting groove 20, an oil inlet 4 is provided at the bottom of the plane bearing 40, an oil inlet nozzle 60 connected to the oil inlet 4 is provided at the bottom of the rotating plate 2, a mounting groove 5 is provided at the bottom of the axis of the rotating plate 2, a rotating bearing 80 is embedded in the mounting groove 5, and a bolt group 90 for connection is provided on the axis of the mounting plate 1 and the rotating plate 2.

[0025] A further embodiment of the bearing mounting groove 20 in the present invention: the bearing mounting groove 20 includes a first annular groove 21 arranged at the bottom of the axis of the mounting plate 1, and a second annular groove 22 is arranged at the top of the axis of the rotating plate 2, and the plane bearing 40 is installed between the first annular groove 21 and the second annular groove 22. The plane bearing 40 is arranged between the first annular groove 21 and the second annular groove 22 to facilitate replacement when the ball is worn after the caster has worked for a long time, and the mounting plate 1 needs to bear all the weight of the vehicle body when the caster is working. When the caster is overloaded, the mounting plate 1 will be deformed, and the ball track will also be deformed. At this time, the mounting plate 1 needs to be replaced. By using the plane bearing 40, even if the mounting plate 1 is deformed, there is no need to replace the plane bearing 40, and the caster can still rotate normally, which can also reduce costs.

[0026] A further embodiment of the plane bearing 40 in the utility model: the plane bearing 40 includes annular plates 41 respectively arranged in the first annular groove 21 and the second annular groove 22, a V-shaped annular groove 42 is provided on the side where the two annular plates 41 are close to each other, a semicircular annular groove 43 is provided at the bottom of the V-shaped annular groove 42, a first ball group 44 is provided between the two V-shaped annular grooves 42, the oil inlet 4 is provided at the bottom of one of the annular plates 41, the V-shaped annular groove 42 functions to facilitate the placement of the first ball group 44, and the semicircular annular groove 43 can ensure that the first ball group 44 can roll normally when the caster rotates.

[0027] A further embodiment of the annular plate 41 in the utility model: a plurality of positioning rods 45 are sequentially arranged along the circumference at the bottom of the annular plate 41, and positioning grooves 46 cooperating with the positioning rods 45 are respectively arranged on the mounting plate 1 and the rotating plate 2. The positioning rods 45 and the positioning grooves 46 can further fix the plane bearing 40 while ensuring that the oil inlet 4 can be smoothly inserted into the threaded through hole 61.

[0028] A further embodiment of the oil inlet nozzle 60 in the utility model: the oil inlet nozzle 60 includes a threaded through hole 61 set on the rotating plate 2, one end of the oil inlet nozzle 60 is inserted into the threaded through hole 61, and a threaded barrel 62 is threadedly connected to the lower end of the threaded through hole 61, and a plug 63 that can be inserted into the oil port 4 is provided at the top of the threaded barrel 62, and an oil pipe interface 64 is provided at the bottom of the threaded barrel 62. After the caster has been working for a long time and the lubricating oil is greatly consumed, it is only necessary to connect the oil pipe for adding lubricating oil to the oil pipe interface 64 to add lubricating oil to the plane bearing 40.

[0029] A further embodiment of the oil inlet nozzle 60 in the present invention: the oil inlet nozzle 60 and the plug nozzle 63 are respectively one-way valves, and the oil inlet nozzle 60 and the plug nozzle 63 are one-way valves to prevent the lubricating oil from flowing back and out of the plane bearing 40.

[0030] A further embodiment of the rotating bearing 80 in the utility model: the rotating bearing 80 includes a bearing outer ring 81 embedded in the mounting groove 5, a bearing inner ring 82 is rotatably provided on the inner ring of the bearing outer ring 81, a ball raceway 83 is provided between the bearing outer ring 81 and the bearing inner ring 82, and a second ball group 84 is provided in the ball raceway 83. The plane bearing 40 is provided with an oil inlet nozzle 60, while the rotating bearing 80 is not provided with an oil inlet nozzle 60. The reason is that when the plane bearing 40 is working on the caster, the plane bearing 40 needs to bear the weight of the entire vehicle body, so the lubricating oil is consumed quickly and the lubricating oil needs to be replaced frequently, while when the caster is working, the rotating bearing 80 only needs to bear the friction force when the caster rotates, and the lubricating oil is not consumed quickly. Considering the production cost in actual production, the rotating bearing 80 does not need to be provided with an oil inlet nozzle 60.

[0031] A further embodiment of the bolt group 90 in the utility model: the bolt group 90 includes through holes 91 respectively arranged on the axis of the mounting plate 1, the plane bearing 40, the rotating plate 2 and the rotating bearing 80, a bolt 92 is provided above the mounting plate 1, the bolt 92 passes through the through holes 91 on the mounting plate 1, the plane bearing 40, the rotating plate 2 and the rotating bearing 80 in sequence, and a nut 93 threadedly connected to the bolt 92 is provided at the bottom of the rotating bearing 80, and the bolt 92 and the nut 93 can be threadedly connected to fix the entire caster frame.

[0032] A further embodiment of the mounting plate 1 in the utility model: a third annular groove 101 is respectively provided on one side of the mounting plate 1 close to the rotating plate 2, and the third annular groove 101 is respectively arranged on the outside of the first annular groove 21 and the second annular groove 22, and a sealing ring 102 is rotatably provided between the third annular grooves 101, and the function of the sealing ring 102 is to prevent dirt from entering the plane bearing 40, so that the plane bearing 40 wears faster.

[0033] When in use: the plane bearing 40 is arranged between the first annular groove 21 and the second annular groove 22 in order to facilitate replacement when the ball is worn after the caster has been working for a long time, and the mounting plate 1 needs to bear all the weight of the vehicle body when the caster is working. When the caster is overloaded, the mounting plate 1 will be deformed, and the ball track will also be deformed. At this time, the mounting plate 1 needs to be replaced. The plane bearing 40 does not need to be replaced even if the mounting plate 1 is deformed, and the caster can still rotate normally. It can also reduce costs. The V-shaped annular groove 42 can conveniently place the first ball group 44, and the semicircular annular groove 43 can ensure that the first ball group 44 can roll normally when the caster rotates. The positioning rod 45 and the positioning groove 46 can further fix the plane bearing 40 while ensuring that the oil inlet 4 can be smoothly inserted into the threaded through hole 61. After the caster has been working for a long time, when the lubricating oil loss is large, It is only necessary to connect the oil pipe for adding lubricating oil to the oil pipe interface 64 to add lubricating oil to the plane bearing 40. The oil inlet nozzle 60 and the plug nozzle 63 are one-way valves to prevent the lubricating oil from flowing back and out of the plane bearing 40. The plane bearing 40 is provided with an oil inlet nozzle 60, while the rotating bearing 80 is not provided with an oil inlet nozzle 60. The reason is that when the plane bearing 40 is working on the caster, the plane bearing 40 needs to bear the weight of the entire vehicle body, so the lubricating oil is consumed quickly and the lubricating oil needs to be replaced frequently, while the rotating bearing 80 only needs to bear the friction force when the caster rotates when the caster is working, and the lubricating oil is not consumed quickly. Considering the production cost in actual production, the rotating bearing 80 does not need to be provided with an oil inlet nozzle 60. The bolt 92 and the nut 93 can be threadedly connected to fix the entire caster frame. The function of the sealing ring 102 is to prevent dirt from entering the plane bearing 40, so that the plane bearing 40 wears faster.

[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A caster bracket with a plane bearing, comprising a mounting plate (1), a rotating plate (2) provided below the mounting plate (1), a wheel bracket (3) fixed at the bottom of the rotating plate (2), characterized in that: A bearing mounting groove (20) is provided between the mounting plate (1) and the rotating plate (2), a plane bearing (40) is provided in the bearing mounting groove (20), an oil inlet (4) is provided at the bottom of the plane bearing (40), an oil inlet nozzle (60) connected to the oil inlet (4) is provided at the bottom of the rotating plate (2), a mounting groove (5) is provided at the bottom of the axis of the rotating plate (2), a rotating bearing (80) is embedded in the mounting groove (5), and a bolt group (90) for connection is provided on the axis of the mounting plate (1) and the rotating plate (2).

2. A caster bracket with a plane bearing according to claim 1, characterized in that: The bearing mounting groove (20) comprises a first annular groove (21) arranged at the bottom of the axis of the mounting plate (1), a second annular groove (22) is arranged at the top of the axis of the rotating plate (2), and the plane bearing (40) is installed between the first annular groove (21) and the second annular groove (22).

3. A caster bracket with a plane bearing according to claim 2, characterized in that: The plane bearing (40) comprises annular plates (41) respectively arranged in a first annular groove (21) and a second annular groove (22); a V-shaped annular groove (42) is arranged on one side where the two annular plates (41) are close to each other; a semicircular annular groove (43) is arranged at the bottom of the V-shaped annular groove (42); a first ball group (44) is arranged between the two V-shaped annular grooves (42); and the oil inlet (4) is arranged at the bottom of one of the annular plates (41).

4. A caster bracket with a plane bearing according to claim 3, characterized in that: A plurality of positioning rods (45) are sequentially arranged along the circumference of the bottom of the annular plate (41), and positioning grooves (46) cooperating with the positioning rods (45) are respectively arranged on the mounting plate (1) and the rotating plate (2).

5. A caster bracket with a plane bearing according to claim 3, characterized in that: The oil inlet nozzle (60) comprises a threaded through hole (61) arranged on the rotating plate (2), one end of the oil inlet nozzle (60) is inserted into the threaded through hole (61), a threaded barrel (62) is threadedly connected to the lower end of the threaded through hole (61), a nozzle (63) capable of being inserted into the oil port (4) is provided at the top of the threaded barrel (62), and an oil pipe interface (64) is provided at the bottom of the threaded barrel (62).

6. A caster bracket with a plane bearing according to claim 5, characterized in that: The oil inlet nozzle (60) and the plug nozzle (63) are both one-way valves.

7. A caster bracket with a plane bearing according to claim 1, characterized in that: The rotary bearing (80) comprises a bearing outer ring (81) embedded in a mounting groove (5), a bearing inner ring (82) rotatably arranged on the inner ring of the bearing outer ring (81), a ball raceway (83) arranged between the bearing outer ring (81) and the bearing inner ring (82), and a second ball group (84) arranged in the ball raceway (83).

8. The caster bracket with a plane bearing according to claim 1, characterized in that: The bolt group (90) comprises through holes (91) respectively arranged on the axis of the mounting plate (1), the plane bearing (40), the rotating plate (2) and the rotating bearing (80); a bolt (92) is arranged above the mounting plate (1); the bolt (92) passes through the through holes (91) on the mounting plate (1), the plane bearing (40), the rotating plate (2) and the rotating bearing (80) in sequence; and a nut (93) threadedly connected to the bolt (92) is arranged at the bottom of the rotating bearing (80).

9. A caster bracket with a plane bearing according to claim 2, characterized in that: A third annular groove (101) is provided on one side of the mounting plate (1) and the rotating plate (2), the third annular groove (101) being arranged outside the first annular groove (21) and the second annular groove (22), respectively, and a sealing ring (102) is rotatably provided between the third annular grooves (101).

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