Walking wheel double-end supporting device

Abstract

The utility model relates to the technical field of excavator crawler belts, in particular to a walking wheel double-end supporting device. The rigid suspension is arranged in the front-and-back direction, the caterpillar band surrounds the rigid suspension in the front-and-back direction, the driving wheel is rotationally arranged at the front end of the rigid suspension and drives the caterpillar band to move in the front-and-back direction, and the guide wheel is rotationally arranged at the rear end of the rigid suspension and guides the caterpillar band to move in the front-and-back direction. The walking wheels are arranged on the rigid suspension frame at intervals in the front-back direction and used for supporting the middle section of the crawler belt, the thrust wheels are arranged below the rigid suspension frame at intervals in the front-back direction, and the supporting assemblies are arranged on the corresponding walking wheels in one-to-one correspondence with the walking wheels and used for supporting the two ends of the corresponding walking wheels. The device aims at reducing the situation that shafts of the walking wheels in the crawler excavator are prone to being broken.

Description

Technical Field

[0001] This utility model relates to the field of excavator track technology, and in particular to a double-end support device for the traveling wheel. Background Technology

[0002] Excavators are generally divided into tracked excavators and wheeled excavators. Tracked excavators have a large ground contact area, making them safer in muddy, wet, and other places where they are prone to getting stuck. Because of their greater weight, excavators can go to a wider range of places. Furthermore, since the tracks are made of metal, they can operate in mines or other harsh working conditions, demonstrating strong off-road capabilities. However, existing tracked excavators have the following problems in actual operation:

[0003] When constructing projects in areas with poor urban infrastructure, such as Africa, the roads leading to the construction site are often long, muddy, and winding, lacking the conditions for transporting excavators by flatbed trucks. Wheeled excavators also cannot travel on these roads. Therefore, tracked excavators must be used to travel tens of kilometers to the construction site. However, most tracked excavators currently have single-sided support wheels in the middle section, which are used to prevent track sagging and slippage during travel and to reduce vertical vibration. When the tracks tighten themselves on rough terrain, they exert downward pressure on the wheels. This results in excessive downward load on the free end of the wheels during prolonged travel on rough terrain, making the connecting shaft of the wheels prone to breakage. This necessitates stopping the machine to replace the entire wheels, causing project delays and significantly increasing construction costs. Utility Model Content

[0004] In order to solve the above problems, the purpose of this utility model is to provide a double-end support device for the traveling wheel, which aims to reduce the occurrence of easy axle breakage of the traveling wheel in tracked excavators.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A double-end support device for traveling wheels includes a rigid suspension arranged in the front-rear direction, a track surrounding the rigid suspension in the front-rear direction, a drive wheel rotatably disposed at the front end of the rigid suspension and driving the track to move in the front-rear direction, a guide wheel rotatably disposed at the rear end of the rigid suspension and guiding the track to move in the front-rear direction, a plurality of traveling wheels spaced apart in the front-rear direction on the rigid suspension and used to support the middle section of the track, and a plurality of support wheels spaced apart in the front-rear direction under the rigid suspension, including multiple sets of support components that correspond one-to-one with each traveling wheel and are disposed on the corresponding traveling wheel to support the two ends of the corresponding traveling wheel.

[0007] Each set of support components includes a fixed seat located below the corresponding travel wheel and fixedly connected to the upper side of the rigid suspension, a clearance groove located on the fixed seat and corresponding to the middle section of the travel wheel, a pair of connecting shafts fixed at the left and right ends of the travel wheel respectively along the axis of the travel wheel, two support members rotatably sleeved on the corresponding connecting shafts, and two mounting sub-assemblies corresponding to the support members and used to detachably connect the corresponding support members to the fixed seat.

[0008] More preferably, each set of mounting sub-assemblies includes a pair of fastening screws respectively located on the front and rear sides of the corresponding connecting shaft of the support and arranged in the up and down direction, two threaded connection holes corresponding to each fastening screw and located on the fixed seat, and two washers corresponding to each fastening screw and fitted on the underside of the screw head of the corresponding fastening screw.

[0009] This utility model has the following beneficial effects:

[0010] 1. This utility model supports the left and right ends of the traveling wheel with support members, so that when the track applies downward pressure to the traveling wheel, the pressure is transferred and dispersed to the support members on both sides by the connecting shafts on both sides, thereby achieving the effect of dispersing pressure, thereby increasing the pressure load that the traveling wheel can withstand, reducing the probability of the traveling wheel shorting the shaft, and is better able to meet the needs of traveling on long and rugged roads than the existing single-sided supported traveling wheel.

[0011] 2. Compared with the existing method of fixing one side of the walking wheel with four screws, this utility model uses two fastening screws to fix the corresponding support on the fixed base without excessively increasing the cost. At the same time, it can meet the requirement of simultaneous installation of the support on both sides of the walking wheel, thus speeding up the assembly and disassembly efficiency. Attached Figure Description

[0012] Figure 1 This is an overall axonometric view of the present invention;

[0013] Figure 2 This is an isolated axonometric view of a support component, a traveling wheel, and a rigid suspension according to the present invention.

[0014] Figure 3 This is an isolated exploded view of a support component and corresponding walking wheels according to the present invention.

[0015] Explanation of reference numerals in the attached figures:

[0016] 1. Rigid suspension; 2. Track; 3. Drive wheel; 4. Guide wheel; 5. Travel wheel; 6. Track roller; 7. Support assembly; 71. Mounting base; 72. Clearance groove; 73. Connecting shaft; 74. Support component; 75. Mounting sub-assembly; 751. Fastening screw; 752. Threaded connection hole; 753. Washer. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1 , Figure 2 and Figure 3 As shown, a double-end support device for a traveling wheel in this embodiment includes a rigid suspension 1 arranged in the front-rear direction, a track 2 surrounding the rigid suspension 1 in the front-rear direction, a drive wheel 3 rotatably disposed at the front end of the rigid suspension 1 and driving the track 2 in the front-rear direction, a guide wheel 4 rotatably disposed at the rear end of the rigid suspension 1 and guiding the track 2 in the front-rear direction, a plurality of traveling wheels 5 arranged at intervals in the front-rear direction on the rigid suspension 1 and used to support the middle section of the track 2, and a plurality of support wheels 6 arranged at intervals in the front-rear direction under the rigid suspension 1, including multiple sets of support components 7 corresponding one-to-one with each traveling wheel 5 and used to support the two ends of the corresponding traveling wheel 5.

[0019] Each set of support components 7 includes a fixed seat 71 located below the corresponding traveling wheel 5 and fixedly connected to the upper side of the rigid suspension 1; a clearance groove 72 located on the fixed seat 71 and corresponding to the middle section of the traveling wheel 5; a pair of connecting shafts 73 fixed at the left and right ends of the traveling wheel 5 respectively along the axis of the traveling wheel 5; two support members 74 rotatably sleeved on the corresponding connecting shafts 73 in a one-to-one correspondence with each of the connecting shafts 73; and two mounting sub-assemblies 75 corresponding to each of the support members 74 and used to detachably connect the corresponding support members 74 to the fixed seat 71.

[0020] When using this product, the support member 74 is sleeved on the connecting shafts 73 on both sides of the walking wheel 5, and the support member 74 is installed on the fixed base 71 through the mounting sub-assembly 75. This allows the vertical force applied to the walking wheel 5 to be transmitted to the support members 74 on both sides through the connecting shafts 73, thereby distributing the load acting on the walking wheel 5 to the support members 74 on both sides and solving the problem of easy shaft breakage caused by supporting the walking wheel on only one side.

[0021] like Figure 2 and Figure 3 As shown, each set of mounting sub-assemblies 75 includes a pair of fastening screws 751 respectively provided on the front and rear sides of the corresponding connecting shaft 73 of the support member 74 and arranged in the vertical direction, two threaded connecting holes 752 provided on the fixing seat 71 corresponding to each fastening screw 751, and two washers 753 corresponding to each fastening screw 751 and sleeved on the underside of the screw head of the corresponding fastening screw 751.

[0022] When using this product, place the traveling wheel 5 horizontally on the corresponding fixed base 71 in the left-right direction, place the two side support members 74 on the fixed base 71, and align each fastening screw 751 with the corresponding threaded connection hole 752. Then, two operators can tighten the fastening screws 751 on the two side support members 74 respectively, screwing them into the corresponding threaded connection hole 752 to achieve the effect of fixing the support member 74 on the fixed base 71. The shim 753 is set to fill the gap between the connecting parts, ensure a tight fit, and enhance the stability of the connection.

[0023] The working principle of this device is as follows:

[0024] Step 1: Weld the fixed seat 71 to the corresponding position of the rigid suspension 1, and put the support 74 on the connecting shaft 73 at both ends of the corresponding walking wheel 5.

[0025] Step 2: Place the traveling wheel 5 horizontally on the corresponding fixed seat 71 in the left and right direction, place the two side support members 74 on the fixed seat 71, and align each fastening screw 751 with the corresponding threaded connection hole 752.

[0026] Step 3: Then, the two operators can tighten the fastening screws 751 on the two side support members 74 respectively, screwing them into the corresponding threaded connection holes 752, so as to fix the support member 74 on the fixed seat 71, thereby restricting the vertical movement of the corresponding traveling wheel 5. This allows the vertical force applied to the traveling wheel 5 to be transmitted to the two side support members 74 through the connecting shaft 73, thereby distributing the load acting on the traveling wheel 5 to the two side support members 74, solving the problem of the traveling wheel being prone to axle breakage due to single-sided support of the traveling wheel.

[0027] The above description is only a specific embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A double-end support device for a traveling wheel, comprising a rigid suspension (1) arranged in the front-rear direction, a track (2) surrounding the rigid suspension (1) in the front-rear direction, a drive wheel (3) rotatably disposed at the front end of the rigid suspension (1) and driving the track (2) in the front-rear direction, a guide wheel (4) rotatably disposed at the rear end of the rigid suspension (1) and guiding the track (2) in the front-rear direction, a plurality of traveling wheels (5) spaced apart in the front-rear direction on the rigid suspension (1) and used to support the middle section of the track (2), and a plurality of support wheels (6) spaced apart in the front-rear direction under the rigid suspension (1), characterized in that: Includes multiple sets of support components (7) that are installed on the corresponding walking wheels (5) one by one and are used to support the two ends of the corresponding walking wheels (5); Each set of support components (7) includes a fixed seat (71) located below the corresponding walking wheel (5) and fixedly connected to the upper side of the rigid suspension (1), a clearance groove (72) located on the fixed seat (71) and corresponding to the middle section of the walking wheel (5), a pair of connecting shafts (73) fixedly located at the left and right ends of the walking wheel (5) along the axis of the walking wheel (5), two support members (74) rotatably sleeved on the corresponding connecting shafts (73) in a one-to-one correspondence with each connecting shaft (73), and two mounting sub-assemblies (75) corresponding to each support member (74) and used to detachably connect the corresponding support member (74) to the fixed seat (71).

2. The double-end support device for a walking wheel according to claim 1, characterized in that: Each set of mounting sub-assemblies (75) includes a pair of fastening screws (751) respectively located on the front and rear sides of the corresponding connecting shaft (73) of the support (74) and arranged in the up and down direction, two threaded connection holes (752) corresponding to each fastening screw (751) and located on the fixed seat (71), and two washers (753) corresponding to each fastening screw (751) and fitted on the underside of the screw head of the corresponding fastening screw (751).

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