Middle-heavy type polyurethane double wheel

Abstract

The utility model discloses a middle and heavy type polyurethane double wheel in the technical field of polyurethane double wheels, which comprises a mounting frame and a first mounting unit, two wear-resistant hubs are arranged in the mounting frame, and the middle and heavy type polyurethane double wheel further comprises a second mounting unit. According to the wear-resisting wheel hub, the two wear-resisting wheel hubs are arranged in the mounting frame, so that when the wear-resisting wheel hub is used, a user can mount the brake pad on the inner wall of the mounting frame through the limiting unit and then rotatably mount the two wear-resisting wheel hubs in the mounting frame through the first mounting unit, and when the two wear-resisting wheel hubs need to be locked in the using process, the wear-resisting wheel hubs are locked through the second mounting unit; the two rotating wheels can be controlled to be attached to the inner rings of the two wear-resisting hubs respectively while the surfaces of the brake pads are controlled to be attached to the surfaces of the two wear-resisting hubs through the driving unit, so that rotation of the inner rings and the outer rings of the two wear-resisting wheel rollers is blocked, and compared with the prior art, the blocking capacity on the two wear-resisting hubs is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane double wheels, in particular to a medium and heavy-duty polyurethane double wheel. Background Art

[0002] Polyurethane wheels are a kind of high-performance industrial casters, which are widely used in various high-load and high-wear environments. Polyurethane wheels usually consist of multiple components, including wear-resistant hubs, spokes and bearings. The rim is in direct contact with the ground and bears the main friction and wear, and is usually made of high-wear-resistant polyurethane material.

[0003] At present, during the use of medium and heavy-duty polyurethane double wheels, if they do not need to be moved continuously, they need to be locked. There are various locking methods. The more common one is to directly rub the outer surface of their wear-resistant hubs to achieve the purpose of braking. Although this method can achieve the braking effect, the braking effect on medium and heavy-duty polyurethane double wheels is generally relatively poor. Therefore, a new type of medium and heavy-duty polyurethane double wheel is needed to solve the above problems. Summary of the Invention

[0004] The purpose of the utility model is to provide a polyurethane double wheel to solve the problem that the braking effect of the current medium and heavy-duty polyurethane double wheels is generally relatively poor.

[0005] The utility model specifically adopts the following technical solutions to achieve the above purpose:

[0006] A polyurethane double wheel, comprising: a mounting frame, two wear-resistant hubs are arranged inside the mounting frame, and a first mounting unit is further included, and the first mounting unit is used to rotatably mount both of the wear-resistant hubs inside the mounting frame;

[0007] A brake pad is installed inside the mounting frame, rotating wheels are arranged on the inner rings of both of the wear-resistant hubs, and a limiting unit and a driving unit are further included. The limiting unit is used to limit the position of the brake pad on the inner wall of the mounting frame, and the driving unit is used to control the brake pad to approach both of the wear-resistant hubs while controlling the two rotating wheels to approach the inner rings of the two wear-resistant hubs respectively.

[0008] Further, the mounting frame includes a mounting plate, a plurality of mounting bolts are threadedly inserted on the surface of the mounting plate, a main frame body is arranged below the mounting plate, an extension frame is fixedly installed on the surface of the main frame body, and a second mounting unit is further included, and the second mounting unit is used to rotatably mount the main frame body on the surface of the mounting plate.

[0009] Further, the second mounting unit includes a mounting groove formed on the surface of the mounting plate. A flat thrust bearing is slidably sleeved on the inner wall of the mounting groove. A mounting rod is fixedly installed on the inner wall of the mounting groove. A heightening ring is slidably sleeved on the surface of the mounting rod. A mounting hole is formed on the surface of the main frame body. A tapered roller bearing is slidably inserted into the inner wall of the mounting hole. The inner rings of the flat thrust bearing and the tapered roller bearing are both slidably sleeved on the surface of the mounting rod. A mounting nut is threadedly sleeved on the surface of the mounting rod.

[0010] Further, the first mounting unit includes two square rods whose surfaces are respectively slidably inserted into both sides of the inner wall of the main frame body. Columnar rods are fixedly installed on the surfaces of the two square rods. Two wear-resistant hubs are respectively slidably sleeved on the surfaces of the two columnar rods. Limiting protrusions are provided at one ends of the two columnar rods. A stop block is further included. The two limiting protrusions are both slidably inserted into the surface of the stop block. Limiting tubes are fixedly installed on the surfaces of the two square rods. Limiting nuts are threadedly sleeved on the surfaces of the two limiting tubes.

[0011] Further, the driving unit includes two damping rotating shafts. A cam is rotatably installed on the inner wall of the extension frame through the two damping rotating shafts. A driving plate is fixedly installed on the surface of the cam. A transmission unit is further included. The transmission unit is used to transmit the force of the rotation of the two cams to the two rotating wheels, so that the two rotating wheels respectively move away from or close to the inner rings of the two wear-resistant hubs.

[0012] Further, the limiting unit includes two limiting rods both fixedly installed on the surfaces of the main frame body and the extension frame. The two limiting rods are both slidably inserted into the surface of the brake pad and limiting nuts are threadedly sleeved on their surfaces.

[0013] Further, the transmission unit includes a first driving groove and a second driving groove formed on the surface of the extension frame. A transmission plate is fixedly installed on the surface of the cam. A transmission rod is fixedly installed on the surface of the transmission plate. The surfaces of the transmission plate and the transmission rod are respectively slidably inserted into the inner walls of the first driving groove and the second driving groove. The two rotating wheels are respectively rotatably installed on both sides of the transmission rod.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] 1. In the present utility model, by arranging two wear-resistant hubs inside the mounting frame, during use, after the user installs the brake pads on the inner wall of the mounting frame through the limiting unit, the two wear-resistant hubs can be rotatably installed inside the mounting frame through the first mounting unit. When it is necessary to lock the two wear-resistant hubs during use, the driving unit can be used to control the surface of the brake pads to simultaneously adhere to the surfaces of the two wear-resistant hubs and control the two rotating wheels to respectively adhere to the inner rings of the two wear-resistant hubs, so that the rotation of both the inner and outer rings of the two wear-resistant rollers is hindered. Compared with the prior art, the hindering ability of the two wear-resistant hubs is effectively increased.

[0016] 2. In the present utility model, when using this device, the assembly sequence of the mounting frame is as follows: first, insert the flat thrust bearing into the inner wall of the mounting groove, then fit a spacer ring on the surface of the flat thrust bearing, sleeved the mounting hole on the main frame body on the surface of the mounting rod, insert the tapered roller bearing into the inner wall of the mounting hole and fit it on the surface of the spacer ring, and finally screw the mounting nut on the surface of the mounting rod to complete the assembly of the mounting frame. During use, when the main frame body rotates, the flat thrust bearing and the tapered roller bearing will rotate synchronously, ensuring the smooth rotation performance of the main frame body and also facilitating the replacement of parts during the subsequent use of this device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 is a half-sectional view of the present utility model;

[0019] Figure 3 is a partial sectional view of the present utility model;

[0020] Figure 4 is a partial sectional view of the present utility model from another angle;

[0021] Figure 5 is a partial three-dimensional structural schematic diagram of the present utility model from another angle.

[0022] In the figure: 1. Mounting frame; 11. Mounting plate; 12. Mounting bolt; 13. Main frame body; 14. Extension frame; 15. Second mounting unit; 151. Mounting groove; 152. Planar thrust bearing; 153. Mounting rod; 154. Lifting ring; 155. Mounting hole; 156. Tapered roller bearing; 157. Mounting nut; 2. Wear-resistant wheel hub; 3. First mounting unit; 31. Square rod; 32. Cylindrical rod; 33. Limit projection; 34. Stop block; 35. Limit tube; 36. Limit nut; 4. Brake pad; 5. Rotating wheel; 6. Limiting unit; 61. Limiting rod; 62. Contact nut; 7. Driving unit; 71. Damping rotating shaft; 72. Cam; 73. Driving plate; 74. Transmission unit; 741. First driving groove; 742. Second driving groove; 743. Transmission plate; 744. Transmission rod. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0024] A polyurethane double wheel provided in this embodiment is mainly used to solve the problem that the braking effect of current medium and heavy polyurethane double wheels is generally poor, and the following technical solutions are provided. The following will be combined with Figures 1 - 5 make a detailed description:

[0025] A polyurethane double wheel, comprising: a mounting frame 1 internally provided with two wear-resistant hubs 2. During use, the user can rotatably mount the two wear-resistant hubs 2 inside the mounting frame 1 through the first mounting unit 3, and then mount a brake pad 4 on the inner wall of the mounting frame 1 through the limiting unit 6. In this way, during subsequent use, the user can control the surface of the brake pad 4 to fit on the surfaces of the two wear-resistant hubs 2 through the driving unit 7, so as to achieve the braking purpose of the two wear-resistant hubs 2. At the same time, different from the prior art, a rotating wheel 5 is provided on the inner ring of each of the two rollers of the device. While controlling the movement of the brake pad 4, the driving unit 7 will also control the two rotating wheels 5 to respectively fit on the inner rings of the two wear-resistant hubs 2, so as to perform secondary braking on the wear-resistant hubs 2, effectively improving the braking effect.The main components of the mounting bracket 1 are as follows: a mounting plate 11 with several mounting bolts 12 threadedly inserted on its surface. During use, the user can install the mounting plate 11 at the position where installation is required through the several mounting bolts 12, which is also a relatively common mounting method for wheels at present. A main frame body 13 is provided below the mounting plate 11, and an extension frame 14 is fixedly installed on the surface of the main frame body 13. During use, the user can rotatably install the main frame body 13 on the surface of the mounting plate 11 through the second mounting unit 15, thereby realizing the overall assembly of the mounting bracket 1. The main components of the first mounting unit 3 are as follows: two square rods 31, and cylindrical rods 32 are fixedly installed on the surfaces of both square rods 31. One end of one of the cylindrical rods 32 is provided with a limiting protrusion 33. During use, after the user arranges the two wear-resistant hubs 2 inside the main frame body 13, the two cylindrical rods 32 are respectively slidably inserted into the surfaces of the two wear-resistant hubs 2 and then respectively slidably inserted on both sides of a stopper 34 arranged between the two wear-resistant rollers. Finally, the user threadedly sleeved limit nuts 36 on the surfaces of two limit tubes 35 respectively fixedly installed on the surfaces of the two square rods 31, and the limitation of the two rollers inside the main frame body 13 can be realized. The main components of the limiting unit 6 are as follows: two abutting nuts 62, and two limiting rods 61 fixedly installed on the surfaces of the main frame body 13 and the extension frame 14. During use, the user simultaneously slidably sleeved the brake pads 4 on the surfaces of the two limiting rods 61 and then threadedly sleeved the abutting nuts 62 on the surfaces of the two limiting rods 61, and the installation of the brake pads 4 on the inner walls of the main frame body 13 and the extension frame 14 is completed. The main components of the driving unit 7 are as follows: two damping rotating shafts 71, and a cam 72 is rotatably installed on the inner wall of the extension frame 14 through the two damping rotating shafts 71. During use, when the user steps on a driving plate 73 fixedly installed on the surface of the cam 72, the cam 72 can be driven to rotate, so that one end of the cam 72 abuts against the surface of the brake pad 4, driving the brake pad 4 to approach the two wear-resistant hubs 2, realizing the braking of the wear-resistant hubs 2. During this process, the transmission unit 74 will transmit the force of the rotation of the cam 72 to the two rotating wheels 5, so that the two rotating wheels 5 respectively move away from or approach the inner rings of the two wear-resistant hubs 2, increasing the obstructive effect on the wear-resistant hubs 2.

[0026] Such as Figure 2As shown, in some embodiments, the main components of the second mounting unit 15 are: a mounting groove 151 formed on the surface of the mounting plate 11. During use, the user first places a flat thrust bearing 152 on the inner wall of the mounting groove 151, then places a spacer ring 154 on the surface of the flat thrust bearing 152 so that the spacer ring 154 is slidably sleeved on the surface of the mounting rod 153. Then, the tapered roller bearing 156 is slidably inserted into the inner wall of the mounting hole 155 on the surface of the main frame 13, so that the mounting rod 153 is inserted into the inner wall of the tapered roller bearing 156. Finally, a mounting nut 157 is threadedly sleeved on the surface of the mounting rod 153 so that the mounting nut 157 abuts against the surface of the tapered roller bearing 156, thus realizing the mounting of the main frame 13 on the surface of the mounting plate 11. During subsequent use, when the main frame 13 rotates, it will drive the flat thrust bearing 152 and the outer ring of the tapered roller bearing 156 to rotate.

[0027] As Figure 5 shown, in some embodiments, the main components of the transmission unit 74 are: a first drive groove 741 and a second drive groove 742 formed on the surface of the extension frame 14. When the user steps on the drive plate 73 to drive the cam 72 to rotate, it will further drive the transmission plate 743 fixedly mounted on the surface of the cam 72 to slide in the inner wall of the first drive groove 741. Since a transmission rod 744 is fixedly mounted on the surface of the transmission plate 743, the transmission rod 744 will synchronously slide in the inner wall of the second drive groove 742. Also, since two rotating wheels 5 are respectively rotatably mounted on both sides of the transmission rod 744, the transmission rod 744 will drive the two rotating wheels 5 to move, thereby bringing the surfaces of the two transmission wheels into contact with the inner rings of the two wear-resistant hubs 2 respectively, realizing further braking of the two wear-resistant hubs 2.

[0028] The working process of the present utility model: First, the user installs the mounting plate 11 at the place where it needs to be installed (commonly at the bottom of a bracket or a cart) through a plurality of mounting bolts 12, and then it can be used normally. When it is necessary to brake the two wear-resistant hubs 2, the user steps on the drive plate 73, which will drive the cam 72 to rotate. When the cam 72 rotates, it will abut against the brake pad 4 and drive the transmission plate 743 and the transmission rod 744 to swing at the same time, thereby realizing the bending of the brake pad 4 and the swinging of the two rotating wheels 5, and realizing the simultaneous braking of the outer rings and inner rings of the two wear-resistant hubs 2.

[0029] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A medium and heavy-duty polyurethane double wheel, characterized in that, Including: A mounting bracket (1), inside which there are two wear-resistant hubs (2). There is also a first mounting unit (3) for rotatably mounting the two wear-resistant hubs (2) inside the mounting bracket (1). A brake pad (4) is installed inside the mounting bracket (1). Rotating wheels (5) are provided on the inner rings of the two wear-resistant hubs (2). There are also a limiting unit (6) and a driving unit (7). The limiting unit (6) is used to limit the position of the brake pad (4) to the inner wall of the mounting bracket (1), and the driving unit (7) is used to control the brake pad (4) to approach the two wear-resistant hubs (2) while controlling the two rotating wheels (5) to approach the inner rings of the two wear-resistant hubs (2) respectively.

2. The medium and heavy-duty polyurethane double wheel according to claim 1, wherein: The mounting bracket (1) includes a mounting plate (11). A number of mounting bolts (12) are threadedly inserted into the surface of the mounting plate (11). A main frame body (13) is provided below the mounting plate (11). An extension frame (14) is fixedly installed on the surface of the main frame body (13). There is also a second mounting unit (15) for rotatably mounting the main frame body (13) on the surface of the mounting plate (11).

3. A medium and heavy-duty polyurethane double wheel according to claim 2, characterized in that: The second mounting unit (15) includes a mounting groove (151) opened on the surface of the mounting plate (11). A flat thrust bearing (152) is slidably sleeved on the inner wall of the mounting groove (151). A mounting rod (153) is fixedly installed on the inner wall of the mounting groove (151). A heightening ring (154) is slidably sleeved on the surface of the mounting rod (153). A mounting hole (155) is opened on the surface of the main frame body (13). A tapered roller bearing (156) is slidably inserted into the inner wall of the mounting hole (155). The inner rings of the flat thrust bearing (152) and the tapered roller bearing (156) are both slidably sleeved on the surface of the mounting rod (153). A mounting nut (157) is threadedly sleeved on the surface of the mounting rod (153).

4. The medium and heavy-duty polyurethane double wheel according to claim 2, wherein: The first mounting unit (3) includes two square rods (31) whose surfaces are respectively slidably inserted into both sides of the inner wall of the main frame body (13). Columnar rods (32) are fixedly installed on the surfaces of the two square rods (31). The two wear-resistant hubs (2) are respectively slidably sleeved on the surfaces of the two columnar rods (32). Limiting protrusions (33) are provided at one ends of the two columnar rods (32). There is also a stop block (34). The two limiting protrusions (33) are both slidably inserted into the surface of the stop block (34). Limiting tubes (35) are fixedly installed on the surfaces of the two square rods (31). Limiting nuts (36) are threadedly sleeved on the surfaces of the two limiting tubes (35).

5. A medium and heavy-duty polyurethane double wheel according to claim 2, characterized in that: The driving unit (7) includes two damping rotating shafts (71). The inner wall of the extension frame (14) is rotatably installed with a cam (72) through the two damping rotating shafts (71). A driving plate (73) is fixedly installed on the surface of the cam (72). The driving unit further includes a transmission unit (74). The transmission unit (74) is used to transmit the force of the rotation of the cam (72) to the two rotating wheels (5), so that the two rotating wheels (5) are respectively away from or close to the inner rings of the two wear-resistant hubs (2).

6. A medium and heavy-duty polyurethane double wheel according to claim 2, characterized in that: The limiting unit (6) includes two limiting rods (61) both fixedly installed on the surfaces of the main frame body (13) and the extension frame (14). The two limiting rods (61) are both slidably inserted into the surface of the brake pad (4) and are both threadedly sleeved with abutting nuts (62).

7. A medium and heavy-duty polyurethane double wheel according to claim 5, characterized in that: The transmission unit (74) includes a first driving groove (741) and a second driving groove (742) formed on the surface of the extension frame (14). A transmission plate (743) is fixedly installed on the surface of the cam (72). A transmission rod (744) is fixedly installed on the surface of the transmission plate (743). The surfaces of the transmission plate (743) and the transmission rod (744) are respectively slidably inserted into the inner walls of the first driving groove (741) and the second driving groove (742). The two rotating wheels (5) are respectively rotatably installed on both sides of the transmission rod (744).

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