A walking system

Abstract

A walking system, including a chain wheel, a guide wheel, a drive shaft, a guide shaft, a chassis frame, a guide wheel, a support wheel, a track, a hydraulic motor; the output end of the hydraulic motor is connected with the drive shaft, the drive shaft drives the chain wheel to rotate, the outer periphery of the chain wheel is sleeved with the track, the track is further sleeved with the guide wheel, the shaft center of the guide wheel is provided with the guide shaft, the track is provided with the chassis frame, the chassis frame includes an upper plate, a lower plate and a vertical plate, the guide wheel is arranged between the upper plate and the track, the support wheel is arranged between the lower plate and the track, and the number of the support wheels is more than that of the guide wheels; the vertical plate is arranged between the upper plate and the lower plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tunneling machines, in particular to a walking system. BACKGROUND

[0002] With the process of urbanization and the continuous expansion of infrastructure construction, the market demand for tunneling machines is gradually growing. With the continuous expansion of underground construction, the requirements for the function, efficiency and safety of tunneling machines are becoming more and more stringent. For many years, the domestic tunneling machine industry has shown a good development trend, and the import and domestic rate has increased. At present, the market size of tunneling machines in China is expanding, and the technical level is gradually improving. A relatively complete industrial chain and industrial cluster has been formed, and the competitiveness of domestic tunneling machines in the domestic and foreign markets is continuously enhanced.

[0003] Tunneling machines include mechanical arms, vehicle bodies, chassis, etc. The chassis commonly includes tracks, walking wheels, and tensioning devices for tensioning the tracks, etc. The technology of tunneling machines focuses on its excavation mode, geological collapse risk assessment, and stability maintenance of the excavated area. In this process, traditional manual operation is upgraded to unmanned and intelligent operation, aiming to comprehensively improve the work efficiency and safety of tunneling machines. In actual engineering practice, the following problems exist:

[0004] I. The existing technology of the chassis tensioning device commonly includes tensioning through hydraulic, spring, screw rod, etc. The spring is a general part widely used in various tensioning devices. However, due to the harsh walking and working environment of the tunneling machine, it causes greater vibration, which leads to the intensification of the vibration of the light component such as the spring, and the intensification of the wear between the spring and the column bearing the spring.

[0005] II. In the existing technology, the middle position of the spring is the position with the largest vibration amplitude. How to reduce the vibration amplitude is a problem to be solved.

[0006] III. In actual work, considering stability, the adjustment range of the hydraulic tensioning device will not be too large; the extension of the hydraulic cylinder also needs to limit the extension of the spring.

[0007] IV. The existing technology of the chassis tensioning device commonly includes tensioning through the hydraulic tensioning device. In the hydraulic tensioning device, the tensioning is simply realized by the hydraulic cylinder, which is reflected in the extension and retraction of the hydraulic cylinder. However, the hydraulic extension and retraction is necessarily less stable than the fixed mechanism, especially in the harsh walking and working environment of the tunneling machine, which requires a more stable adjustment mechanism.

[0008] V. The existing technology of the adjustment mechanism has the problem of installation interference, which needs to be solved. SUMMARY

[0009] In order to overcome the above problems, the present application proposes a solution to simultaneously solve the above problems.

[0010] The technical scheme adopted by the present application to solve its technical problems is: a walking system, comprising a chain wheel, a guide wheel, a drive shaft, a guide shaft, a chassis frame, a guide wheel, a support wheel, a track, a hydraulic motor, a tensioning device; the output end of the hydraulic motor is connected to the drive shaft, the drive shaft drives the chain wheel to rotate, the outer periphery of the chain wheel is sleeved with a track, the track is further sleeved with the guide wheel, the guide wheel is provided with the guide shaft at the shaft center, the track is provided with a chassis frame, the chassis frame comprises an upper plate, a lower plate and a vertical plate, the guide wheel is arranged between the upper plate and the track, the support wheel is arranged between the lower plate and the track, and the number of support wheels is greater than the number of guide wheels; the vertical plate is arranged between the upper plate and the lower plate, and the tensioning device is arranged between the vertical plate and the guide shaft;

[0011] The tensioning device comprises a tensioning part, a tensioning rod, a connecting block and an adjusting part; the tensioning part comprises a cylinder body, a connecting rod, a first spring, a second spring, a sliding sleeve, a first sliding ring, a second sliding ring, a stop part and a top plate; the adjusting part comprises a connecting frame, a connecting plate, a connecting column, a shaft sleeve and a sleeve ring; the cylinder body is provided with an oil channel; the cylinder body is connected to the vertical plate, and the connecting block is sleeved on the guide shaft;

[0012] The cylinder body comprises a first cylinder and a second cylinder, the first cylinder and the second cylinder are connected through the stop part, one end of the connecting rod extends into the second cylinder, and the other end of the connecting rod is connected to one end of the connecting frame through a fastener; the length of the first cylinder is equal to the length of the second cylinder, the diameter of the second cylinder is smaller than the diameter of the first cylinder, one end of the first spring is sleeved on the outer periphery of the first cylinder and connected to the top plate, the top plate is connected to the outer wall of the first cylinder, the outer wall of the second cylinder is sleeved with the sliding sleeve, and the two ends of the sliding sleeve are respectively connected with the first sliding ring and the second sliding ring, the outer diameter of the first sliding ring is equal to the outer diameter of the second sliding ring and smaller than the outer diameter of the sliding sleeve; the second sliding ring comprises an inclined surface, the surface shape of the inclined surface is matched with the surface shape of the stop part, the other end of the first spring is sleeved on the outer periphery of the second sliding ring and connected to the sliding sleeve; one end of the second spring is sleeved on the outer periphery of the first sliding ring and connected to the sliding sleeve, and the other end of the second spring is connected to the connecting frame; in a natural state, the length of the first spring is greater than the length of the second spring;

[0013] The other end of the connecting frame is connected with upper and lower connecting plates, the inside of the connecting frame forms an avoiding space, one end of the tensioning rod can extend into the avoiding space, the outer periphery of the tensioning rod is sleeved with the shaft sleeve, the shaft sleeve comprises eight outer surfaces, the upper and lower surfaces of the shaft sleeve are respectively provided with a connecting column to connect the upper and lower connecting plates; the tensioning rod is provided with a first hole, the side surface of the shaft sleeve is provided with a second hole; a transition surface is arranged between the upper surface and the side surface of the shaft sleeve; a sleeving ring is arranged around the fastener in the avoiding space, one end of the tensioning rod can extend into the sleeving ring to realize positioning after extending into the avoiding space; the other end of the tensioning rod is connected with the connecting block.

[0014] Preferably, the number of the first holes is several.

[0015] Preferably, the number of the second holes is several.

[0016] Preferably, the transition surface is provided with a third hole.

[0017] Preferably, the tensioning rod is provided with a fourth hole matched with the third hole.

[0018] Preferably, the connecting frame comprises a main body, an outer edge and a rib part.

[0019] Preferably, the inside of the main body forms the avoiding space, and the opening of the main body extends outward to form the outer edge.

[0020] Preferably, the rib part is arranged on the outer wall of the main body.

[0021] Preferably, the upper and lower connecting plates are connected with the outer edge.

[0022] Preferably, the sliding sleeve, the first sliding ring and the second sliding ring can move along the second cylinder body.

[0023] The beneficial effects of the present application are:

[0024] The first point proposed in the background art is that the structure of the spring sleeved on the hydraulic cylinder in the prior art is changed into two cylinder bodies, the lengths of the two cylinder bodies are equal, the diameters of the two cylinder bodies are different, the large cylinder body is sleeved with one end of the spring, and the spring of the small cylinder body section is suspended, so that the section with the maximum amplitude in the spring assembly is suspended with a large size to avoid collision and wear with the hydraulic cylinder.

[0025] The second point of the application is that the single spring is changed into two springs, the middle of the two springs is connected with a sliding sleeve, the two sides of the sliding sleeve are connected with a sliding ring respectively, the sliding ring is nested in the end of the two springs to support, thereby forming a whole spring assembly, the amplitude is small, the elastic force is sufficient, and the wear caused by vibration is avoided.

[0026] The third point of the application is that the spring on the left side of the sliding sleeve is shorter than the spring on the right side, so that the left spring can provide greater rigidity to realize left limiting, and the right spring is longer, a transition part is arranged between the two cylinders, the transition part has a slope, the sliding ring on the right side also has a slope, and the two slopes can cooperate to realize the right limiting stop function, thereby limiting the stroke of the sliding sleeve and the sliding ring, and limiting the stroke of the spring.

[0027] The fourth point of the application is that an adjustable solid connection structure is arranged between the hydraulic tensioning part and the tensioning rod, a shaft sleeve is arranged outside the tensioning rod, a matching block is connected outside the shaft sleeve, and the matching block is connected with a connecting frame; different positions are connected through the cooperation of a series of connection holes, so that the connection length is adjusted, and the adaptability is enhanced. In addition, the connecting frame has an avoiding space inside, which can be used for the forward extension of the tensioning rod, a sleeve ring is arranged around the fastener in the avoiding space, which is convenient for the positioning and limiting of the tensioning rod, and is also convenient for the installation and positioning of the fastener.

[0028] The fifth point of the application is that the shaft sleeve is arranged as an internal circular hole accommodating the tensioning rod, and the outer surface is an octahedron; the upper and lower surfaces are connected with connecting columns, and the connecting columns are connected with the connecting frame; the planes of the upper and lower surfaces of the octahedron are convenient for the installation and manufacturing of the connecting columns; the left and right surfaces of the octahedron are connected with the tensioning rod through a series of connection holes, and the planes of the left and right surfaces of the octahedron are suitable for connecting with the end planes of the fastener; thereby the interference between the two sets of connection structures is avoided; optionally, the four inclined surfaces of the outer surface of the shaft sleeve can also be connected with the tensioning rod through holes; finally, the position adjustment of the tensioning rod is realized through the staggered positions of the series of connection holes. BRIEF DESCRIPTION OF DRAWINGS

[0029] The application will be further described below in combination with the drawings and embodiments.

[0030] Figure 1 is the overall schematic diagram of the chassis walking system of the application.

[0031] Figure 2 is the tensioning part structure diagram of the tensioning device of the application.

[0032] Figure 3 is the adjustable part structure diagram of the tensioning device of the application.

[0033] Figure 4 Figure is a three-dimensional view of the tensioning rod of the present application.

[0034] Figure 5 Figure is a three-dimensional view of the shaft sleeve of the present application.

[0035] In the figure, the reference signs are as follows:

[0036] 1, sprocket; 2, guide wheel; 3, drive shaft; 4, guide shaft; 5, chassis frame; 6, upper plate; 7, lower plate; 8, vertical plate; 9, guide wheel; 10, support wheel; 11, track; 12, tensioning part; 13, tensioning rod; 14, connecting block; 15, bolt; 16, first cylinder; 17, second cylinder; 18, connecting rod; 19, connecting frame; 20, first spring; 21, second spring; 22, oil passage; 23, sliding sleeve; 24, first sliding ring; 25, second sliding ring; 26, inclined surface; 27, stop part; 28, connecting plate; 29, connecting column; 30, shaft sleeve; 31, first hole; 32, first surface; 33, second surface; 34, shaft hole; 35, transition surface; 36, second hole; 37, top plate; 38, avoiding space; 39, sleeving ring; 40, fastener. DETAILED DESCRIPTION

[0037] As shown in the figure: a walking system, including sprocket, guide wheel, drive shaft, guide shaft, chassis frame, guide wheel, support wheel, track, hydraulic motor, tensioning device; the output end of the hydraulic motor is connected to the drive shaft, the drive shaft drives the sprocket to rotate, the outer periphery of the sprocket is sleeved with a track, the track is further sleeved with the guide wheel, the shaft center of the guide wheel is provided with the guide shaft, the track is provided with a chassis frame, the chassis frame includes an upper plate, a lower plate and a vertical plate, the guide wheel is arranged between the upper plate and the track, the support wheel is arranged between the lower plate and the track, the number of support wheels is greater than the number of guide wheels; the vertical plate is arranged between the upper plate and the lower plate, and the tensioning device is arranged between the vertical plate and the guide shaft;

[0038] The tensioning device includes a tensioning part, a tensioning rod, a connecting block, and an adjusting part; the tensioning part includes a cylinder body, a connecting rod, a first spring, a second spring, a sliding sleeve, a first sliding ring, a second sliding ring, a stop part, and a top plate; the adjusting part includes a connecting frame, a connecting plate, a connecting column, a shaft sleeve, and a sleeving ring; the cylinder body is provided with an oil passage; the cylinder body is connected to the vertical plate, and the connecting block is sleeved on the guide shaft;

[0039] The cylinder includes a first cylinder and a second cylinder, the first cylinder and the second cylinder are connected through a stopper, one end of the connecting rod extends into the second cylinder, the other end of the connecting rod is connected to one end of the connecting frame through a fastener; the length of the first cylinder is equal to the length of the second cylinder, the diameter of the second cylinder is smaller than the diameter of the first cylinder, one end of the first spring is sleeved on the outer periphery of the first cylinder and connected to the top plate, the top plate is connected to the outer wall of the first cylinder, the outer wall of the second cylinder is sleeved with the sliding sleeve, the sliding sleeve is connected with a first sliding ring and a second sliding ring at both ends, the outer diameter of the first sliding ring is equal to the outer diameter of the second sliding ring and smaller than the outer diameter of the sliding sleeve; the second sliding ring includes a slope, the slope is matched with the surface shape of the stopper, the other end of the first spring is sleeved on the outer periphery of the second sliding ring and connected to the sliding sleeve; one end of the second spring is sleeved on the outer periphery of the first sliding ring and connected to the sliding sleeve, the other end of the second spring is connected to the connecting frame; in a natural state, the length of the first spring is greater than the length of the second spring.

[0040] The other end of the connecting frame is connected with two connecting plates, the inside of the connecting frame forms an avoiding space, one end of the tension rod can extend into the avoiding space, the outer periphery of the tension rod is sleeved with the shaft sleeve, the shaft sleeve includes eight outer surfaces, the upper and lower surfaces of the shaft sleeve are each provided with a connecting column to connect the upper and lower connecting plates; the tension rod is provided with a first hole, the side surface of the shaft sleeve is provided with a second hole; a transition surface is arranged between the upper surface and the side surface of the shaft sleeve; a sleeving ring is arranged around the fastener in the avoiding space, one end of the tension rod can extend into the sleeving ring to realize positioning after extending into the avoiding space; the other end of the tension rod is connected to the connecting block.

[0041] As shown in the figure: the number of the first holes is several. The number of the second holes is several. The transition surface is provided with a third hole. The tension rod is provided with a fourth hole matched with the third hole. The connecting frame includes a main body, an outer edge and a rib part. The inside of the main body forms the avoiding space, and the opening of the main body extends outward to form an outer edge. The rib part is arranged on the outer wall of the main body. The upper and lower connecting plates are connected to the outer edge. The sliding sleeve, the first sliding ring and the second sliding ring can move along the second cylinder.

[0042] The above detailed description is for the specific description of the feasible embodiments of the present application, which is not used to limit the patent scope of the present application, and any equivalent implementation or change without departing from the present application shall be included in the patent scope of the present application.

Claims

1. A walking system characterized by: The application relates to a tensioning device for a chain wheel, a guide wheel, a driving shaft, a guide shaft, a chassis frame, a guide wheel, a supporting wheel, a track, a hydraulic motor and a tensioning device. The tensioning device comprises a tensioning part, a tensioning rod, a connecting block and an adjusting part. The cylinder comprises a first cylinder and a second cylinder, the first cylinder is connected with the second cylinder through a stopper, one end of a connecting rod is inserted into the second cylinder, and the other end of the connecting rod is connected with one end of a connecting frame through a fastener. The length of the first cylinder is equal to the length of the second cylinder, the diameter of the second cylinder is smaller than the diameter of the first cylinder, one end of a first spring is sleeved on the outer periphery of the first cylinder and connected with a top plate, the top plate is connected to the outer wall of the first cylinder, the outer wall of the second cylinder is sleeved with a sliding sleeve, and the two ends of the sliding sleeve are respectively connected with a first sliding ring and a second sliding ring. The outer diameter of the first sliding ring is equal to the outer diameter of the second sliding ring and smaller than the outer diameter of the sliding sleeve. The second sliding ring comprises an inclined surface which is matched with the surface shape of the stopper. One end of the second spring is sleeved on the outer periphery of the first sliding ring and connected with the sliding sleeve, and the other end of the second spring is connected with the connecting frame. In a natural state, the length of the first spring is greater than the length of the second spring. The other end of the connecting frame is connected with two upper and lower connecting plates, an avoiding space is formed in the connecting frame, one end of the tensioning rod can be inserted into the avoiding space, the outer periphery of the tensioning rod is sleeved with a shaft sleeve, the shaft sleeve comprises eight outer surfaces, and the upper and lower surfaces of the shaft sleeve are respectively provided with a connecting column to connect the upper and lower connecting plates. The tensioning rod is provided with a first hole, and the side surface of the shaft sleeve is provided with a second hole. The avoiding space is provided with a sleeving ring around the fastener, one end of the tensioning rod can be inserted into the sleeving ring to realize positioning after being inserted into the avoiding space. The other end of the tensioning rod is connected with the connecting block. The connecting frame comprises a main body, an outer edge and a rib part. Two connecting plates are connected to the outer edge; the sliding sleeve, the first sliding ring and the second sliding ring can move along the second cylinder.

2. A walking system according to claim 1, characterized in that: The number of the first holes is several.

3. The walking system of claim 1, wherein: The number of the second holes is several.

4. The walking system of claim 1, wherein: The transition surface is provided with third holes.

5. A walking system according to claim 4, characterized in that: The tensioning rod is provided with fourth holes matched with the third holes.

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