Thrust wheel and working machine

Abstract

The utility model relates to the technical field of operation machinery, and discloses a thrust wheel and an operation machinery, the thrust wheel comprises a wheel shaft assembly, the interior of the wheel shaft assembly is provided with a containing cavity used for containing lubricating oil, the peripheral surface of the wheel shaft assembly is provided with an oil storage groove and at least one connecting hole, and the oil storage groove is communicated with the containing cavity through the connecting hole; and the wheel body assembly is rotatably arranged outside the wheel shaft assembly in a sleeving mode, and a lubricating cavity is defined by the wheel body assembly and the oil storage tank. According to the thrust wheel, the containing cavity is formed in the wheel shaft assembly and communicated with the lubricating cavity, the cavity in the arrangement mode can increase the amount of lubricating oil capable of being stored in the thrust wheel, meanwhile, the heat needed when the lubricating oil is heated to the same temperature can be increased, and after the temperature of the lubricating oil in the lubricating cavity is increased due to continuous work of the thrust wheel, the lubricating oil can be heated to the same temperature. After the lubricating oil with higher temperature flows into the accommodating cavity, the lubricating oil can quickly exchange heat with the lubricating oil with lower temperature in the accommodating cavity, so that the lubricating oil is integrally kept at lower temperature, and the heat absorption capacity of the lubricating oil is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of operating machinery, in particular to a track wheel and an operating machinery. Background Art

[0002] Track rollers are a crucial component of the travel mechanism of hydraulic work machines. Their primary function is to provide support between the tracks and the ground, ensuring stable movement across a wide range of terrains. Track rollers evenly distribute the weight of the work machine, increasing the track's contact area with the ground and reducing specific pressure. They also reduce direct wear between the tracks and the ground.

[0003] At present, common track rollers are mainly composed of a wheel body assembly and an axle assembly. The wheel body assembly is sleeved on the outside of the axle assembly. An oil storage tank is opened on the inner ring of the wheel body assembly. The wheel body assembly stores lubricating oil through the space between the oil storage tank and the outer wall of the axle assembly. When this type of track roller bears load for a long time and rubs against the track chain track, the internal temperature of the track roller tends to rise rapidly, resulting in high-temperature oil leakage. Utility Model Content

[0004] In view of this, the utility model provides a track wheel and an operating machine to solve the problem that the existing track wheels are prone to high-temperature oil leakage during operation.

[0005] In the first aspect, the utility model provides a supporting wheel, including: an axle assembly, which has a accommodating cavity for accommodating lubricating oil, an outer peripheral surface of the axle assembly is provided with an oil storage tank and at least one connecting hole, and the oil storage tank is connected to the accommodating cavity through the connecting hole; a wheel body assembly, which is rotatably mounted on the outside of the axle assembly, and the wheel body assembly and the oil storage tank together form a lubrication cavity.

[0006] Beneficial effect: an accommodating cavity is provided inside the wheel axle assembly, and the accommodating cavity is connected with the lubricating cavity. The cavity under this arrangement can effectively increase the amount of lubricating oil that can be stored in the supporting wheel, and at the same time can increase the heat required for the lubricating oil to be raised to the same temperature. When the supporting wheel continues to work and the temperature of the lubricating oil in the lubricating cavity rises, the lubricating oil with a higher temperature flows into the accommodating cavity and can quickly exchange heat with the lubricating oil with a lower temperature therein, so that the lubricating oil as a whole is maintained at a lower temperature, which greatly improves the heat absorption capacity of the lubricating oil. Compared with the supporting wheel form that only stores lubricating oil in the oil storage tank, the supporting wheel of this embodiment can still be within the preset safe temperature range after working continuously for the same time at the same intensity, which can effectively increase the service life of the supporting wheel and effectively solve the problem of high-temperature oil leakage during operation of the existing supporting wheel.

[0007] In an optional embodiment, there are multiple oil storage tanks and they are arranged at intervals along the axial direction of the wheel axle assembly, and the bottom surface of each oil storage tank is provided with at least one connecting hole.

[0008] Beneficial effect: Compared with an integral single oil storage tank, this type of oil storage tank can reduce the impact of the oil storage tank on the structural strength of the axle assembly.

[0009] In an optional embodiment, the wheel assembly cooperates with multiple oil storage tanks to form a lubrication chamber.

[0010] Beneficial effect: This type of lubrication cavity can increase the base area of ​​the lubricating oil and the wheel assembly, ensuring the heat exchange efficiency of the lubricating oil and the wheel assembly.

[0011] In an optional embodiment, a plurality of oil storage tanks and a plurality of connecting holes are symmetrically arranged on the axle assembly.

[0012] Beneficial effect: This type of track wheel can prevent its own center of gravity from shifting, making the force on the track wheel more uniform during operation.

[0013] In an optional embodiment, the oil storage tank is arranged in an arc shape along the outer circumference of the wheel axle assembly.

[0014] Beneficial effect: This type of oil storage tank has little impact on the structural strength of the axle assembly, ensuring lubrication and heat dissipation capabilities while enabling the axle assembly to more reliably support the wheel body assembly.

[0015] In an optional embodiment, an oil filling hole is provided at the end of at least one end of the wheel axle assembly, and a sealing member is detachably provided in the oil filling hole.

[0016] Beneficial effect: The oil filling hole facilitates the injection of lubricating oil into the interior of the wheel axle assembly, and also facilitates the replacement of the lubricating oil in the accommodating cavity during inspection and maintenance.

[0017] In an optional embodiment, the axle assembly includes an axle body and a limit seat, and the limit seats are fixedly mounted on both ends of the axle body. The part of the axle body located between the two limit seats has an installation position, and the wheel body assembly can be rotatably mounted on the installation position and cooperate with the adjacent limit seat.

[0018] Beneficial effects: The wheel axle assembly has a simple and reliable structure and is easy to manufacture; the limiting seat can limit the axial position of the wheel assembly.

[0019] In an optional embodiment, the wheel body assembly includes a wheel body and a bushing. The wheel body is an integral component and has a through hole for the shaft body to pass through. The bushing is arranged in the through hole and is located between the wheel body and the shaft body. The two ends of the wheel body along the axial direction are sealed with the limit seat through the first seal.

[0020] Beneficial effects: The wheel body assembly has a simple and reliable structure, and the first seal can improve the sealing reliability when the wheel body assembly and the wheel axle assembly are matched.

[0021] In an optional embodiment, the limit seat and the shaft body are interference fit, and a second seal is arranged between the two; and / or the through hole includes a first hole section, a second hole section, a third hole section, a second hole section and a first hole section arranged in sequence along the axial direction, the inner diameters of the first hole section, the second hole section and the third hole section are reduced on one side, the connecting surface between the first hole section and the second hole section is a first connecting surface, and the connecting surface between the second hole section and the third hole section is a second connecting surface, the bushing includes an axial section and a radial section connected in sequence, the axial section is located between the first hole section and the shaft body, the radial section is located between the limit seat and the first connecting surface, the first seal is located between the first connecting surface and the limit seat, and is located on the side of the radial section away from the shaft body, the second connecting surface and the third hole section are respectively clearance-fitted with the limit seat.

[0022] Beneficial effects: The interference fit can ensure a reliable fixed connection between the limit seat and the shaft body, and the second seal can prevent the lubricating oil from leaking through the gap between the limit seat and the shaft body.

[0023] In a second aspect, the utility model further provides an operating machine, which comprises: a body having a traveling frame; and at least one of the above-mentioned supporting wheels, assembled and connected to the traveling frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic cross-sectional view of a track roller according to an embodiment of the present utility model.

[0026] Description of reference numerals:

[0027] 1. Axle assembly; 101. Accommodating chamber; 102. Oil reservoir; 103. Connecting hole; 104. Oil filling hole; 105. Blocking member; 106. Axle body; 107. Limiting seat; 108. Second sealing member;

[0028] 2. Wheel body assembly; 201. Lubrication chamber; 202. Wheel body; 203. Bushing; 2031. Axial section; 2032. Radial section; 204. Through hole; 2041. First hole section; 2042. Second hole section; 2043. Third hole section; 2044. First connecting surface; 2045. Second connecting surface; 205. First sealing member. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0030] The following combination Figure 1 , describing the embodiments of the present utility model.

[0031] According to an embodiment of the present invention, on the one hand, a supporting wheel is provided, including: an axle assembly 1 and a wheel body assembly 2, the axle assembly 1 has a accommodating cavity 101 for accommodating lubricating oil, an outer peripheral surface of the axle assembly 1 is provided with an oil storage tank 102 and at least one connecting hole 103, the oil storage tank 102 is connected to the accommodating cavity 101 through the connecting hole 103; the wheel body assembly 2 is rotatably mounted on the outside of the axle assembly 1, and the wheel body assembly 2 and the oil storage tank 102 together form a lubrication cavity 201.

[0032] When the track roller of the present embodiment is used, a receiving chamber 101 is provided inside the wheel axle assembly 1, and the receiving chamber 101 is communicated with the lubricating chamber 201. The chamber under this arrangement can effectively increase the amount of lubricating oil that can be stored in the track roller, and at the same time, can increase the heat required for the lubricating oil to be raised to the same temperature. When the track roller continues to work and the temperature of the lubricating oil in the lubricating chamber 201 rises, the lubricating oil with a higher temperature flows into the receiving chamber 101, and can quickly exchange heat with the lubricating oil with a lower temperature therein, so that the lubricating oil as a whole is maintained at a lower temperature, which greatly improves the heat absorption capacity of the lubricating oil. Compared with the track roller form that only stores lubricating oil in an oil storage tank, the track roller of the present embodiment can still be within the preset safe temperature range after working continuously for the same time at the same intensity, which can effectively increase the service life of the track roller, and effectively solve the problem of high-temperature oil leakage during operation of the existing track roller.

[0033] In the related art, since the oil storage tank 102 is usually opened on the inner ring wall of the wheel body assembly, the structure of the inner ring wall of the wheel body assembly is relatively complex, and it is difficult to form a single component through a single component manufacturing. Usually, the wheel body assembly needs to be divided into two sections along the axial direction, and then spliced ​​together after processing to form a complete wheel body assembly. This form of wheel body assembly not only has a more troublesome and laborious manufacturing process, but also the strength of the assembled wheel body assembly is relatively low.

[0034] In the supporting wheel of this embodiment, the oil storage tank 102 is located on the outer wall of the wheel axle assembly 1. The wheel axle assembly 1 is easier to process and manufacture than the wheel body assembly 2. Therefore, after the oil storage tank 102 is provided, it can still be formed into an integral component through a single processing and manufacturing process. The inner ring of the wheel body assembly 2 can also become flatter because there is no need to provide the oil storage tank 102, which can effectively reduce the complexity of the wheel body assembly 2, so that the wheel body assembly 2 can be formed into an integral component through a single processing process, which not only provides more options for the molding method of the wheel body assembly 2, but also can enhance the strength and reliability of the wheel body assembly 2.

[0035] It can be understood that, as an alternative embodiment, the inner wall of the wheel assembly 2 can also be provided with a corresponding matching groove to increase the volume of the lubrication cavity 201 and further increase the capacity of the lubricating oil.

[0036] In addition, it should be noted that since a accommodating cavity 101 is provided inside the axle assembly 1 to store lubricating oil, compared with a solid axle assembly 1, the axle assembly 1 of this embodiment has a lower overall density and therefore a lower weight, which can improve the heat dissipation effect while also achieving a weight reduction effect.

[0037] In one possible embodiment, there are multiple oil storage tanks 102 and they are arranged at intervals along the axial direction of the axle assembly 1. The bottom surface of each oil storage tank 102 is provided with at least one connecting hole 103. Compared with a single integral oil storage tank 102, this type of oil storage tank 102 can reduce the impact of the oil storage tank 102 on the structural strength of the axle assembly 1 after it is opened.

[0038] Specifically, there is no strict limit on the specific number and specifications of the oil storage tanks 102, and there can be two or three, etc. The oil storage tanks 102 can be an annular groove, an arc groove, etc. The specific shape and size can be flexibly selected according to actual needs.

[0039] In one possible embodiment, the wheel assembly 2 cooperates with multiple oil storage tanks 102 to form a lubrication cavity 201. This type of lubrication cavity 201 can increase the base area of ​​the lubricating oil and the wheel assembly 2, ensuring the heat exchange efficiency between the lubricating oil and the wheel assembly 2.

[0040] It can be understood that, as an alternative embodiment, the wheel assembly 2 can also cooperate with the corresponding oil storage tanks 102 to form a plurality of independent lubrication chambers 201.

[0041] In one possible embodiment, multiple oil storage tanks 102 and multiple connecting holes 103 are symmetrically arranged on the wheel axle assembly 1. This type of track wheel can avoid the deviation of its own center of gravity, so that the force applied to the track wheel during operation is more uniform, ensuring that the track wheel can work stably and reliably.

[0042] Preferably, if Figure 1 As shown, there are two oil storage tanks 102 and two connecting holes 103 , and the two oil storage tanks 102 are axially spaced apart along the axle assembly 1 .

[0043] In one possible embodiment, the oil storage tank 102 is arranged in an arc shape along the outer peripheral surface of the axle assembly 1. This type of oil storage tank 102 has little effect on the structural strength of the axle assembly 1. While ensuring lubrication and heat dissipation capabilities, the axle assembly 1 can more reliably support the wheel body assembly 2.

[0044] It should be noted that the specific position of the oil storage tank 102 on the outer peripheral surface of the axle assembly 1 is not limited and can be as follows: Figure 1 The top, side, bottom, etc. of the axle assembly 1 shown in the figure can be flexibly selected according to the needs.

[0045] In one possible embodiment, an oil filling hole 104 is provided at the end of at least one end of the wheel axle assembly 1, and a sealing member 105 is detachably provided in the oil filling hole 104. The oil filling hole 104 facilitates the injection of lubricating oil into the interior of the wheel axle assembly 1, and also facilitates the replacement of the lubricating oil in the accommodating cavity 101 during inspection and maintenance, thereby improving the assembly convenience and maintenance convenience of the supporting wheel.

[0046] Specifically, there is no limitation on the location and number of the oil filling holes 104 . The oil filling holes 104 may be provided at both ends of the axle assembly 1 , or only at one end surface.

[0047] Furthermore, the blocking member 105 is threadedly connected to the oil filling hole 104 .

[0048] In one possible embodiment, the axle assembly 1 includes a shaft body 106 and a limit seat 107. The limit seats 107 are fixedly mounted on both ends of the shaft body 106. The portion of the shaft body 106 located between the two limit seats 107 has an installation position. The wheel body assembly 2 can be rotatably mounted in the installation position and limitedly cooperate with the adjacent limit seat 107. The axle assembly 1 has a simple and reliable structure and is easy to process and manufacture. The limit seat 107 can limit the axial position of the wheel body assembly 2.

[0049] In one possible embodiment, the wheel body assembly 2 includes a wheel body 202 and a bushing 203. The wheel body 202 is an integral component and has a through hole 204 for the shaft body 106 to pass through. The bushing 203 is arranged in the through hole 204 and is located between the wheel body 202 and the shaft body 106. The wheel body 202 is sealed with the limit seat 107 at both ends along the axial direction through the first seal 205. The wheel body assembly 2 has a simple and reliable structure. The first seal 205 can improve the sealing reliability when the wheel body assembly 2 is matched with the wheel axle assembly 1. This form of wheel body 202 has higher structural strength and longer service life.

[0050] Specifically, the wheel body 202 is integrally formed by forging, which reduces the number of processing steps and the time required for processing. At the same time, this type of wheel body 202 has a better heat dissipation capacity, which can further reduce the risk of high-temperature oil leakage.

[0051] In one possible embodiment, the limit seat 107 and the shaft body 106 are interference fit, and a second seal 108 is provided between the two. The interference fit can ensure that the limit seat 107 and the shaft body 106 are reliably fixedly connected, and the second seal 108 can prevent the lubricating oil from leaking through the gap between the limit seat 107 and the shaft body 106.

[0052] Specifically, if Figure 1 As shown, the outer ring of the shaft body 106 is provided with an annular sealing groove, and the second sealing member 108 is provided in the sealing groove.

[0053] Among them, there is no limit on the number of second seals 108 and sealing grooves. Each limit seat 107 and shaft body 106 can be provided with a second seal 108 and a sealing groove. Each limit seat 107 and shaft body 106 can also be provided with more than two second seals 108 and sealing grooves, as long as the gap can be reliably sealed.

[0054] In one possible embodiment, the through hole 204 includes a first hole segment 2041, a second hole segment 2042, a third hole segment 2043, a second hole segment 2042 and a first hole segment 2041 arranged in sequence along the axial direction, the inner diameters of the first hole segment 2041, the second hole segment 2042 and the third hole segment 2043 are reduced on one side, the connecting surface of the first hole segment 2041 and the second hole segment 2042 is a first connecting surface 2044, the connecting surface of the second hole segment 2042 and the third hole segment 2043 is a second connecting surface 2045, the bushing 203 includes an axial segment 2031 and a radial segment 2032 connected in sequence, the axial segment 2031 is located between the first hole segment 2041 and the shaft The wheel body 202, the bushing 203 and the limit seat 107 are matched with each other to form a labyrinth seal, and the sealing form is more stable and reliable. In addition, the clearance fit form can avoid direct contact between the wheel body 202 and the limit seat 107 and friction, thereby reducing the resistance of the wheel body 202 when the wheel body 202 rotates.

[0055] According to an embodiment of the present invention, on the other hand, a working machine is provided, which includes: a body and at least one of the above-mentioned supporting wheels, the body having a traveling frame, and the supporting wheels are assembled and connected to the traveling frame.

[0056] In this embodiment, the working machine is a hydraulic excavator, a paver, a scraper, a bulldozer, a crane, a rotary drilling rig, etc.

[0057] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A track roller, characterized in that: include: An axle assembly (1) has an accommodating cavity (101) therein for accommodating lubricating oil, an oil storage tank (102) and at least one connecting hole (103) are provided on the outer peripheral surface of the axle assembly (1), and the oil storage tank (102) is communicated with the accommodating cavity (101) through the connecting hole (103); The wheel assembly (2) is rotatably sleeved on the outside of the wheel axle assembly (1), and the wheel assembly (2) and the oil storage tank (102) are combined to form a lubrication cavity (201).

2. The track roller according to claim 1, characterized in that: There are a plurality of oil storage tanks (102) which are spaced apart along the axial direction of the wheel axle assembly (1), and the bottom surface of each oil storage tank (102) is provided with at least one connecting hole (103).

3. The track roller according to claim 2, characterized in that: The wheel assembly (2) cooperates with a plurality of the oil storage grooves (102) to form a lubrication cavity (201).

4. The track roller according to claim 2, characterized in that: The plurality of oil storage tanks (102) and the plurality of connection holes (103) are symmetrically arranged on the axle assembly (1).

5. The track roller according to any one of claims 1 to 4, characterized in that: The oil storage tank (102) is arranged in an arc shape along the outer peripheral surface of the axle assembly (1).

6. The track roller according to any one of claims 1 to 4, characterized in that: An oil filling hole (104) is provided at the end of at least one end of the wheel axle assembly (1), and a detachable blocking member (105) is provided in the oil filling hole (104).

7. The track roller according to any one of claims 1 to 4, characterized in that: The wheel axle assembly (1) comprises an axle body (106) and a limiting seat (107), the limiting seats (107) are fixedly sleeved on both ends of the axle body (106), the portion of the axle body (106) located between the two limiting seats (107) has a mounting position, and the wheel body assembly (2) is rotatably sleeved on the mounting position and is limitedly matched with the adjacent limiting seat (107).

8. The track roller according to claim 7, characterized in that: The wheel assembly (2) comprises a wheel body (202) and a bushing (203); the wheel body (202) is an integral component and has a through hole (204) for the shaft body (106) to pass through; the bushing (203) is arranged in the through hole (204) and is located between the wheel body (202) and the shaft body (106); and the wheel body (202) is sealed and matched with the limit seat (107) at both ends along the axial direction through a first sealing member (205).

9. The track roller according to claim 8, characterized in that: The limiting seat (107) and the shaft body (106) are interference-fitted, and a second sealing member (108) is provided between the two. And / or, the through hole (204) includes a first hole segment (2041), a second hole segment (2042), a third hole segment (2043), a second hole segment (2042) and a first hole segment (2041) arranged in sequence along the axial direction, the inner diameters of the first hole segment (2041), the second hole segment (2042) and the third hole segment (2043) are reduced on one side, the connecting surface between the first hole segment (2041) and the second hole segment (2042) is a first connecting surface (2044), the connecting surface between the second hole segment (2042) and the third hole segment (2043) is a second connecting surface (2045), and the bushing (203) includes An axial section (2031) and a radial section (2032) are connected in sequence, wherein the axial section (2031) is located between the first hole section (2041) and the shaft body (106), the radial section (2032) is located between the limit seat (107) and the first connecting surface (2044), the first sealing member (205) is located between the first connecting surface (2044) and the limit seat (107), and is located on a side of the radial section (2032) away from the shaft body (106), and the second connecting surface (2045) and the third hole section (2043) are respectively clearance-matched with the limit seat (107).

10. A working machine, characterized in that: include: The fuselage has a running frame; At least one track wheel according to any one of claims 1 to 9 is assembled and connected to the walking frame.

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