Crawler excavator with road surface protection device
By designing support, adjustment, transmission, and buffer components on tracked excavators, track height and angle can be adjusted, and rubber blocks can be used to protect the road surface. This solves the problems of high cost and high labor intensity when existing excavators are used for site changes, and improves construction efficiency.
Patent Information
- Application Number
- CN202520565434.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-27
AI Technical Summary
When excavators are changing construction sites, the existing methods of protecting the road surface include using trailers to transport materials and manually placing wooden or rubber boards, which are costly, time-consuming, labor-intensive, and ineffective.
A tracked excavator with a road surface protection device was designed. Through the combination of support components, adjustment components, transmission components and buffer components, the height of the track can be adjusted and the tilt angle can be changed, and rubber blocks are used to protect the road surface.
It effectively protects the road surface, reduces costs and labor intensity, adapts to various special terrains and road surfaces, and improves construction efficiency.
Smart Images
Figure CN223821824U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to road surface protection for excavators, specifically a tracked excavator equipped with a road surface protection device. Background Technology
[0002] During excavator construction, as the construction site changes, the excavator needs to move on the road surface. The metal tracks can damage lawns, asphalt roads, cement roads, etc., affecting the quality of the project.
[0003] When excavators are moving between construction sites, the road surface is typically protected by methods such as trailer transport, manual placement of wooden planks, and rubber mats.
[0004] Existing methods such as trailer transport and manual placement of rubber sheets are costly, time-consuming, and labor-intensive, and may still damage the road surface. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a tracked excavator with a road surface protection device, which solves the problem that existing excavators, when changing construction sites, generally rely on methods such as trailer transport and manual placement of wooden planks and rubber sheets to protect the road surface, which is costly, time-consuming, labor-intensive, and ineffective.
[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: A tracked excavator with a road surface protection device includes a body, a slewing bearing located below the body, and a support assembly located below the slewing bearing. An adjustment assembly is located inside the support assembly, a transmission assembly is installed on both sides of the body, and a buffer assembly is located outside the transmission assembly. The support assembly serves a fixing function and supports and installs the other components. The adjustment assembly adjusts the tilt angle of the excavator tracks. The transmission assembly transmits power to ensure operation. The buffer assembly provides cushioning and protection for the contact area between the excavator and the road surface.
[0007] Preferably, the support assembly includes a chassis, which is fixedly connected to the bottom of the slewing bearing; two first movable frames are provided, located on opposite sides of the front of the first movable frame; a second movable frame is provided below the chassis; a connecting block is provided below the second movable frame near the first movable frame; three sets of connecting rods are provided, each set containing two rods. The first set of connecting rods is slidably engaged with the front of the chassis, and its end is fixedly connected to the outer wall of the first movable frame; the second set of connecting rods is slidably engaged with the bottom of the chassis, and its end is fixedly connected to the top of the second movable frame; the third set of connecting rods is slidably engaged with the front of the second movable frame, and its end is fixedly connected to the outer wall of the connecting block. The connecting rods serve a fixing function, connecting and reinforcing various parts. The chassis and the first movable frames cooperate to adjust the height of the slewing bearing, and the chassis, the second movable frame, and the connecting block cooperate to adjust the contact area between the track and the ground.
[0008] Preferably, the adjustment assembly includes four first telescopic rods, which are fixedly connected to the four bottom corners of the chassis and have their output ends fixedly connected to the second movable frame; two second telescopic rods are fixedly connected to the front outer wall of the chassis and have their output ends fixedly connected to the outer wall of the first movable frame; and two third telescopic rods are fixedly connected to the bottom of the first movable frame and have their output ends fixedly connected to the top of the connecting block. The first and third telescopic rods drive the second movable frame and the connecting block to rise and fall, and the second telescopic rods drive the first movable frame to move back and forth.
[0009] Preferably, the transmission assembly includes four transmission rods, which are rotatably connected to the inner wall of the chassis, the inner wall of the second movable frame, the inner walls of the two first movable frames, and the inner walls of the two connecting blocks via bearings; four sets of transmission wheels are fixedly connected to the two ends of the outer walls of the four transmission rods; and a chain is meshed with the outer wall of the transmission wheels; wherein, the transmission rods drive the transmission wheels to rotate, and the chain connects the transmission wheels to rotate.
[0010] Preferably, the buffer assembly includes multiple rubber blocks, which are fixedly connected to the outer wall of the chain; connecting bolts are threadedly connected to the rubber blocks and the chain; and rubber gaskets are fixedly connected to the top of the connecting bolts; wherein the rubber blocks and rubber gaskets play a buffering and protective role, and the connecting bolts connect the rubber blocks and the chain.
[0011] Beneficial effects
[0012] This utility model provides a tracked excavator with a road surface protection device. It offers the following advantages: This tracked excavator with a road surface protection device, through the cooperation of a first telescopic rod, a first movable frame, and a second movable frame, uses the first, second, and third telescopic rods to drive the second and first movable frames to move, thereby adjusting the height of the tracks and changing the tilt angle. Combined with rubber blocks covering the track surface, it can adapt to various special terrains and road surfaces, and protect the road surface during travel. This solves the problem that existing excavators, when changing sites, rely on methods such as trailer transport and manual placement of wooden planks and rubber sheets for road surface protection, which are costly, time-consuming, labor-intensive, and ineffective. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 for Figure 1 A structural diagram of the rubber block, chain, and connecting bolts;
[0015] Figure 3 for Figure 1 A structural schematic diagram of the central drive wheel, the first movable frame, and the second movable frame;
[0016] Figure 4 for Figure 1 A schematic diagram of the structure of the connecting block, drive wheel and chain.
[0017] In the diagram: 1. Body; 2. Support assembly; 21. Chassis; 22. First movable frame; 23. Second movable frame; 24. Connecting block; 25. Connecting rod; 3. Adjustment assembly; 31. First telescopic rod; 32. Second telescopic rod; 33. Third telescopic rod; 4. Transmission assembly; 41. Transmission rod; 42. Transmission wheel; 43. Chain; 5. Buffer assembly; 51. Rubber block; 52. Rubber pad; 53. Connecting bolt; 6. Slewing bearing. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] When excavators are moved between construction sites, the existing methods of protecting the road surface are generally to use trailers for transport and manual placement of wooden planks and rubber sheets. This is costly, time-consuming, and labor-intensive, and can still damage the road surface, resulting in poor effectiveness.
[0020] In view of this, this embodiment provides a tracked excavator with a road surface protection device. Through the cooperation of the first telescopic rod, the first movable frame, and the second movable frame, the first telescopic rod, the second telescopic rod, and the third telescopic rod drive the second movable frame and the first movable frame to move, thereby adjusting the height of the tracks and changing the tilt angle. With the rubber blocks covering the track surface, it can adapt to various special terrains and road surfaces, and protect the road surface during travel. This solves the problem that existing excavators, when changing construction sites, use methods such as trailer transport and manual placement of wooden planks and rubber sheets to protect the road surface, which is costly, time-consuming, labor-intensive, and ineffective.
[0021] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.
[0022] Example 1: By Figure 1-4 It is known that a tracked excavator with a road surface protection device includes a body 1, a slewing bearing 6 is provided below the body 1, and the tracked excavator with the road surface protection device also includes a support assembly 2, an adjustment assembly 3, a transmission assembly 4, and a buffer assembly 5. The support assembly 2 is located below the slewing bearing 6; the adjustment assembly 3 is located inside the support assembly 2; the transmission assembly 4 is installed on both sides of the body 1; and the buffer assembly 5 is located outside the transmission assembly 4. Among them, the support assembly 2 plays a fixing role and supports and installs the other components, the adjustment assembly 3 realizes the tilt angle adjustment of the excavator tracks, the transmission assembly 4 is responsible for transmitting power to ensure operation, and the buffer assembly 5 provides cushioning and protection for the contact part between the excavator and the road surface.
[0023] In the specific implementation process, it is worth noting that a complete excavator mainly has a power unit, working device, slewing device, transmission device, traveling device, and auxiliary device. This embodiment makes an innovation on the traveling device of the excavator by adding a road protection device inside the traveling device. Apart from the traveling device, all other essential devices of the excavator are existing technologies and therefore will not be described in detail. The slewing bearing 6 connects the rest of the excavator to the traveling device below. The support component 2 is the main load-bearing part of this equipment. The adjustment device realizes the tilt angle adjustment of the excavator tracks. The transmission component 4 is responsible for transmitting power to ensure operation. The buffer component 5 provides buffering and protection for the contact part between the excavator and the road surface.
[0024] Furthermore, the support assembly 2 includes a chassis 21, a first movable frame 22, a second movable frame 23, a connecting block 24, and connecting rods 25. The chassis 21 is fixedly connected to the bottom of the slewing bearing 6. There are two first movable frames 22, located on opposite sides of the front of the chassis 21. The second movable frame 23 is located below the chassis 21. The connecting block 24 is located below the second movable frame 23, near the first movable frame 22. There are three sets of connecting rods 25, with two rods in each set. The first set of connecting rods 25 is slidably engaged with the front of the chassis 21. The first set of connecting rods 25 is fixedly connected to the outer wall of the first movable frame 22. The second set of connecting rods 25 is slidably engaged with the bottom of the chassis 21 and fixedly connected to the top of the second movable frame 23. The third set of connecting rods 25 is slidably engaged with the front of the second movable frame 23 and fixedly connected to the outer wall of the connecting block 24. The connecting rods 25 serve to fix and reinforce the various parts. The chassis 21 and the first movable frame 22 work together to adjust the height of the slewing bearing 6. The chassis 21, the second movable frame 23, and the connecting block 24 work together to adjust the contact area between the track and the ground.
[0025] In the specific implementation process, it is worth noting that the chassis 21 is the main part of the excavator's traveling device, bearing the slewing bearing 6 and the other excavator devices above it. The connecting rod 25 is slidably engaged inside the chassis 21 and connects the first movable frame 22, the second movable frame 23 and the connecting block 24. The chassis 21, the first movable frame 22, the second movable frame 23 and the connecting block 24 are all steel structures, welded from steel plates. The chassis 21 has a cavity inside to facilitate the subsequent installation of components.
[0026] Furthermore, the adjustment assembly 3 includes a first telescopic rod 31, a second telescopic rod 32, and a third telescopic rod 33. Four first telescopic rods 31 are provided, fixedly connected to the four bottom corners of the chassis 21. Two second telescopic rods 32 are provided, fixedly connected to the front outer wall of the chassis 21, with their output ends fixedly connected to the outer wall of the first movable frame 22. Two third telescopic rods 33 are provided, fixedly connected to the bottom of the first movable frame 22, with their output ends fixedly connected to the top of the connecting block 24. The first telescopic rods 31 and 33 drive the second movable frame 23 and the connecting block 24 to rise and fall, while the second telescopic rods 32 drive the first movable frame 22 to move back and forth.
[0027] In the specific implementation process, it is worth noting that the models of the first telescopic rod 31, the second telescopic rod 32, and the third telescopic rod 33 are not limited and can be selected according to the actual use. However, the type should be selected to match the overall hydraulic system inside the large excavator. When the adjusting component 3 is working, the first telescopic rod 31 and the third telescopic rod 33 drive the connecting block 24 and the second movable frame 23 downward, causing the equipment height to rise. At the same time, the second telescopic rod 32 drives the first movable frame 22 to retract, increasing the track tilt angle, so that the excavator can adapt to special terrains such as steps. When the telescopic boom moves, since the total length of the chain 43 remains constant, while the multiple first telescopic booms 31 and third telescopic booms 33 extend downward, the second telescopic boom 32 should synchronously extend and retract inward to ensure that the chain 43 is not broken. Since the overall transmission mode of the excavator system is converted from engine mechanical energy to hydraulic transmission, the multiple first telescopic booms 31, second telescopic booms 32 and third telescopic booms 33 can use a flow distributor, flow divider valve or flow divider valve to evenly and synchronously distribute hydraulic oil to each telescopic boom of the same model to ensure that the telescopic booms receive the same flow and achieve speed synchronization.
[0028] Specifically, when using the tracked excavator equipped with a road protection device, after the first movable frame 22, the second movable frame 23, and the connecting block 24 are connected to the chassis 21 via the connecting rod 25, the first telescopic rod 31 and the third telescopic rod 33 drive the connecting block 24 and the second movable frame 23 downward, causing the equipment height to rise. At the same time, the second telescopic rod 32 drives the first movable frame 22 to retract, increasing the track tilt angle, so that the excavator can adapt to special terrains such as steps.
[0029] Example 2: From Figure 1-4 It is known that the transmission assembly 4 includes transmission rods 41, transmission wheels 42, and chains 43. There are four transmission rods 41, which are rotatably connected to the inner wall of the chassis 21, the inner wall of the second movable frame 23, the inner wall of the two first movable frames 22, and the inner wall of the two connecting blocks 24 respectively through bearings. There are four sets of transmission wheels 42, which are fixedly connected to the two ends of the outer wall of the four transmission rods 41 respectively. The chains 43 are meshed with the outer wall of the transmission wheels 42. The transmission rods 41 drive the transmission wheels 42 to rotate, and the chains 43 connect the transmission wheels 42 to rotate.
[0030] In the specific implementation process, it is worth noting that the power source of large excavators is generally a diesel engine. The hydraulic oil is distributed to each hydraulic motor and hydraulic cylinder by the hydraulic pump, hydraulic motor and pipeline in the hydraulic system. This is the existing technology. The transmission wheel 42 should be equipped with a hydraulic motor. The diesel engine provides power output and uses the internal hydraulic system of the excavator to transmit power and drive the transmission wheel 42 to rotate. This is the existing technology. The transmission rod 41, chain 43 and transmission wheel 42 cooperate to transmit power. They are the main components of the excavator's traveling device. The transmission rod 41 drives the transmission wheel 42 to rotate, which in turn drives the chain 43 to rotate. The adjustment component 3 and support component 2 are used to change the tilt angle of the chain 43 to adapt to different terrains.
[0031] Furthermore, the buffer assembly 5 includes a rubber block 51, a rubber pad 52, and a connecting bolt 53. Multiple rubber blocks 51 are provided and fixedly connected to the outer wall of the chain 43. The connecting bolt 53 is threadedly connected to the rubber block 51 and the chain 43. The rubber pad 52 is fixedly connected to the top of the connecting bolt 53. The rubber block 51 and the rubber pad 52 play a buffering and protective role, and the connecting bolt 53 connects the rubber block 51 and the chain 43.
[0032] In the specific implementation process, it is worth noting that the chain 43 is composed of multiple hinged links. The top of each link of the chain 43 should have a threaded hole that can cooperate with the connecting bolt 53 to facilitate the connection of the rubber block 51. The rubber block 51 is fixedly connected to the chain 43 through the connecting bolt 53, which plays a protective role for the road surface and has elasticity and toughness. The rubber pad 52 can be glued to cover the top of the connecting bolt 53 to prevent the connecting bolt 53 from damaging the road surface. The shape and size of the rubber block 51 should be designed according to the specific chain model used by the excavator so that the rubber block 51 can fit tightly against the surface of the chain 43. Its width should match the width of the chain 43, and its length can be designed according to the total length of the chain. As many rubber blocks 51 as possible should be used to cover the track surface to ensure that the deformation of the rubber block 51 is small when the track bends and it is less likely to be damaged. The material of the rubber block 51 can be the rubber used in automobile tires, which has good wear resistance and anti-aging properties and better grip.
[0033] Specifically, based on the above embodiment one, when the equipment is working, the operator can fix the rubber block 51 to the surface of the chain 43. After all components are installed, when the excavator needs to move the work site, it can move the second movable frame 23 and the connecting block 24 according to the terrain of the site through the first telescopic rod 31 and the third telescopic rod 33. At the same time, the second telescopic rod 32 drives the first movable frame 22 to move, thereby changing the tilt angle between the chain 43 and the ground to adapt to different terrains.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A tracked excavator with a road surface protection device, comprising a body (1), characterized in that: A slewing bearing (6) is provided below the machine body (1), and the tracked excavator with road protection device also includes: Support assembly (2) is disposed below the slewing bearing (6); Adjustment component (3) is located inside support component (2); Transmission components (4) are installed on both sides of the body (1); A buffer assembly (5) is disposed outside the transmission assembly (4); The support component (2) serves to fix the excavator and support and install the other components. The adjustment component (3) adjusts the tilt angle of the excavator tracks. The transmission component (4) is responsible for transmitting power to ensure operation. The buffer component (5) provides buffering and protection for the contact part between the excavator and the road surface.
2. A tracked excavator with a road surface protection device according to claim 1, characterized in that: The support component (2) includes: The chassis (21) is fixedly connected to the bottom of the slewing bearing (6); The first movable frame (22) has two parts, which are located on the front sides of the chassis (21); The second movable frame (23) is located below the chassis (21); A connecting block (24) is disposed below the second movable frame (23) on the side near the first movable frame (22); The connecting rods (25) are provided in three sets, with two rods in each set. The first set of connecting rods (25) is slidably engaged with the front of the chassis (21) and its end is fixedly connected to the outer wall of the first movable frame (22). The second set of connecting rods (25) is slidably engaged with the bottom of the chassis (21) and its end is fixedly connected to the top of the second movable frame (23). The third set of connecting rods (25) is slidably engaged with the front of the second movable frame (23) and its end is fixedly connected to the outer wall of the connecting block (24). The connecting rod (25) serves to fix and reinforce the various parts. The chassis (21) and the first movable frame (22) work together to adjust the height of the slewing bearing (6). The chassis (21), the second movable frame (23), and the connecting block (24) work together to adjust the contact area between the track and the ground.
3. A tracked excavator with a road surface protection device according to claim 2, characterized in that: The adjustment component (3) includes: The first telescopic rod (31) has four parts, which are fixedly connected to the four bottom corners of the chassis (21) respectively, and the output end is fixedly connected to the second movable frame (23); There are two second telescopic rods (32), which are fixedly connected to the front of the outer wall of the chassis (21), and the output end is fixedly connected to the outer wall of the first movable frame (22); There are two third telescopic rods (33), which are fixedly connected to the bottom of the first movable frame (22) and whose output ends are fixedly connected to the top of the connecting block (24); The first telescopic rod (31) and the third telescopic rod (33) drive the second movable frame (23) and the connecting block (24) to rise and fall, and the second telescopic rod (32) drives the first movable frame (22) to move back and forth.
4. A tracked excavator with a road surface protection device according to claim 2, characterized in that: The transmission assembly (4) includes: Four transmission rods (41) are provided, which are rotatably connected to the inner wall of the chassis (21), the inner wall of the second movable frame (23), the inner walls of the two first movable frames (22) and the inner walls of the two connecting blocks (24) respectively through bearings; The transmission wheel (42) is provided in four sets, which are respectively fixedly connected to the two ends of the outer wall of the four transmission rods (41); The chain (43) is meshed with the outer wall of the drive wheel (42); The transmission rod (41) drives the transmission wheel (42) to rotate, and the chain (43) connects the transmission wheel (42) to rotate.
5. A tracked excavator with a road surface protection device according to claim 4, characterized in that: The buffer component (5) includes: Multiple rubber blocks (51) are provided and fixedly connected to the outer wall of the chain (43); A connecting bolt (53) is threadedly connected to the rubber block (51) and the chain (43); A rubber gasket (52) is fixedly connected to the top of the connecting bolt (53); Among them, the rubber block (51) and the rubber pad (52) play a buffering and protective role, and the connecting bolt (53) connects the rubber block (51) and the chain (43).