Combined transmission system of crawler trainer

Abstract

The utility model discloses a combined transmission system of a crawler trainer, and belongs to the field of training instruments. Comprising a front transmission system and a rear transmission system which are connected through at least two parallel belts, and a front roller and a rear roller are arranged at the two ends of the interior of each belt in a sleeved mode respectively. The front rollers of the front transmission system move synchronously, and the rear rollers of the rear transmission system rotate freely. The influence caused by manufacturing process errors is eliminated through the rear roller rotating freely, meanwhile, the torque of the rotating shaft is reduced, the rotating shaft is prevented from being broken, and potential safety hazards are eliminated.

Description

Technical Field

[0001] This application belongs to the field of training equipment, and specifically relates to a combined transmission system for a caterpillar trainer. Background Art

[0002] In a traditional caterpillar treadmill, two rollers are respectively arranged at the front end and the rear end of the machine table, and the two rollers are connected by a roller connecting shaft, so as to keep the two rollers rotating simultaneously. The roller located in the front is connected to the motor pulley through a belt to achieve power transmission. The chain plate connecting belt runs continuously between two parallel rollers because the roller shaft drives the rollers to rotate simultaneously. Due to the limitations of the production process including materials, there will be different length differences in the circumferences of the two chain plate connecting belts. During operation, the front and rear rollers rotate simultaneously. Since the front and rear roller groups are coaxial, it will cause a large torque on the front and rear roller connecting shafts, which will further lead to the risk of the caterpillar track tilting or the connecting shaft breaking. At the same time, the deformation of the running belt will also cause the running belt to get stuck or even stall, with certain potential safety hazards. Summary of the Utility Model

[0003] The technical problem to be solved by this application is: to overcome the deficiencies of the prior art and provide a combined transmission system for a caterpillar trainer. This application eliminates the influence caused by manufacturing process errors through a freely rotating rear roller, reduces the torque of the rotating shaft at the same time, avoids the fracture of the rotating shaft, and eliminates potential safety hazards.

[0004] The technical solution adopted by this application to solve the problems it exists is:

[0005] A combined transmission system for a caterpillar trainer includes a front transmission system and a rear transmission system connected by at least two parallel belts. The two ends inside the belt are respectively sleeved with a front roller and a rear roller.

[0006] The front rollers included in the front transmission system move synchronously with each other, and the rear rollers included in the rear transmission system rotate freely with each other.

[0007] Preferably, the front roller is sleeved on the roller, and the front roller is fixedly connected to the roller.

[0008] Preferably, a connecting key is clamped between the front roller and the roller.

[0009] Preferably, a driving wheel fixedly connected is sleeved at the end of the roller.

[0010] Preferably, a front rotating shaft arranged coaxially is penetrated through the middle of the roller, and the roller is rotatably connected to the front rotating shaft.

[0011] Preferably, a front bearing is arranged between the front rotating shaft and the roller.

[0012] Preferably, the rear roller is rotatably arranged on the rear rotating shaft.

[0013] Preferably, a rear bearing is provided between the rear roller and the rear rotating shaft.

[0014] Compared with the prior art, the beneficial effects of the present application are as follows:

[0015] (1) The influence caused by manufacturing process errors is eliminated by the freely rotating rear roller, and at the same time, the torque of the rotating shaft is reduced, avoiding the fracture of the rotating shaft and eliminating potential safety hazards.

[0016] (2) The rear transmission system forms a simple differential to ensure that all belts in the entire transmission system can run synchronously, making it safer to use. Description of the Drawings

[0017] The present application will be further described below with reference to the drawings and embodiments.

[0018] Figure 1 It is a structural diagram of a combined transmission system of a track trainer of the present application.

[0019] Figure 2 It is a cross-sectional view of the front transmission system in the combined transmission system of a track trainer of the present application.

[0020] Figure 3 It is a cross-sectional view of the rear transmission system in the combined transmission system of a track trainer of the present application.

[0021] In the figure: 1 - front roller, 2 - roller barrel, 3 - belt, 4 - connecting key, 5 - front rotating shaft, 6 - front bearing, 7 - driving wheel, 8 - rear roller, 9 - rear rotating shaft, 10 - rear bearing. Detailed Embodiments

[0022] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but use the difference in functions of components as the criterion for distinction. As mentioned throughout the specification and claims, "comprising" is an open-ended term and should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve the technical problems within a certain error range and basically achieve the technical effects.

[0023] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0024] In the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0025] The attached drawings are the best embodiments of the combined transmission system of a kind of crawler trainer. The present application will be further described in detail below with reference to the attached drawings.

[0026] A combined transmission system of a crawler trainer, consisting of Figures 1 to 3 As shown, it includes a front transmission system and a rear transmission system connected by at least two parallel belts 3. The front rollers 1 and the rear rollers 8 are respectively sleeved at both ends inside the belt 3. When the front roller 1 rotates, the rear roller 8 is driven to rotate through the transmission of the belt 3.

[0027] The front rollers 1 included in the front transmission system move synchronously with each other, and the rear rollers 8 included in the rear transmission system rotate freely with each other. That is, the rotation speeds of all the front rollers 1 remain the same, and the rotation speeds of all the rear rollers 8 can be different. Through this arrangement, the rear transmission system forms a simple differential to ensure that all the belts 3 in the entire transmission system can run synchronously, eliminating potential safety hazards.

[0028] As shown in the attached Figure 2 As shown, the front roller 1 is sleeved on the roller 2, and the front roller 1 is fixedly connected to the roller 2.

[0029] There are various ways of fixed connection. For example, the hot sleeve process can be adopted to sleeve the front roller 1 on the roller 2 through interference fit, or it can also be directly fixed by welding. However, for the convenience of disassembly, in this embodiment, a connection key 4 is clamped between the front roller 1 and the roller 2, and the connection key 4 is inserted into the corresponding key grooves of the front roller 1 and the roller 2 to make the two fixedly connected.

[0030] A driving wheel 7 fixedly connected is sleeved on the end of the roller 2, and a motor on the trainer drives the driving wheel 7 to rotate through a synchronous belt, thereby driving the front roller 1 and the belt 3 to rotate.

[0031] A front rotating shaft 5 arranged coaxially is penetrated through the middle of the roller 2, and a front bearing 6 is arranged between the front rotating shaft 5 and the roller 2. Through the support of the front bearing 6, the roller 2 is rotatably connected with the front rotating shaft 5. Both ends of the front rotating shaft 5 penetrate to the outside of the roller 2 and are used for fixedly installing a front transmission system.

[0032] As shown by the appendix Figure 3 As shown, the rear roller 8 is rotatably arranged on a rear rotating shaft 9. A rear bearing 10 is arranged between the rear roller 8 and the rear rotating shaft 9, and through the rear bearing 10, the rear roller 8 is rotatably connected with the rear rotating shaft 9.

[0033] The embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the above embodiments, and various changes can be made without departing from the purpose of the present application within the knowledge scope of those of ordinary skill in the art.

Claims

1. A combined transmission system for a crawler trainer, characterized in that: It includes a front transmission system and a rear transmission system connected by at least two parallel belts (3), and front rollers (1) and rear rollers (8) are respectively sleeved at both ends inside the belt (3); The front rollers (1) included in the front transmission system move synchronously with each other, and the rear rollers (8) included in the rear transmission system rotate freely with each other.

2. The combined transmission system for a crawler trainer according to claim 1, characterized in that: The front roller (1) is sleeved on a roller (2), and the front roller (1) is fixedly connected to the roller (2).

3. The combined transmission system for a crawler trainer according to claim 2, characterized in that: A driving wheel (7) fixedly connected is sleeved at the end of the roller (2).

4. The combined transmission system for a crawler trainer according to claim 2, characterized in that: A front rotating shaft (5) arranged coaxially is passed through the middle of the roller (2), and the roller (2) is rotatably connected to the front rotating shaft (5).

5. The combined transmission system for a crawler trainer according to claim 4, characterized in that: A front bearing (6) is provided between the front rotating shaft (5) and the roller (2).

6. The combined transmission system for a crawler trainer according to any one of claims 1 to 5, characterized in that: The rear roller (8) is rotatably arranged on a rear rotating shaft (9).

7. The combined transmission system for a crawler trainer according to claim 6, characterized in that: A rear bearing (10) is provided between the rear roller (8) and the rear rotating shaft (9).

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