CN115366577A

CN115366577A - Auxiliary rim and wheel type walking equipment

Info

Publication number: CN115366577A
Application number: CN202211076196.3A
Authority: CN
Inventors: 尹超; 付斌; 李欲江; 刘素娜
Original assignee: Guangxi Liugong Machinery Co Ltd; Liugong Changzhou Machinery Co Ltd; Liuzhou Liugong Excavators Co Ltd
Current assignee: Guangxi Liugong Machinery Co Ltd; Liugong Changzhou Machinery Co Ltd; Liuzhou Liugong Excavators Co Ltd
Priority date: 2022-08-16
Filing date: 2022-09-05
Publication date: 2022-11-22

Abstract

The invention relates to a wheel mounting connecting piece, aiming at solving the problem that the switching between double tires and single tires at the end part of an axle of the existing wheel type excavator is inconvenient, the invention constructs an auxiliary rim and wheel type walking equipment, wherein in the auxiliary rim, a fixed structure comprises a mounting flange and a first cylinder part, the axial inner side end of the first cylinder part is fixedly connected with the mounting flange, and the first cylinder part and the mounting flange are coaxially arranged; the changing structure comprises a rim connecting flange and a second cylinder part, wherein the outer axial end of the second cylinder part is fixedly connected with the rim connecting flange and the rim connecting flange are coaxially arranged; the axial inner side end of the second cylinder part is connected with the axial outer side end of the first cylinder part in a plugging and sleeving manner; the locking means is adapted to lockingly engage the first and second barrel parts together to restrain the second barrel part against axially outward movement relative to the first barrel part. The auxiliary rim is used in wheel type walking equipment, the switching operation of an axle between a single-tire structure and a double-tire structure is simple and convenient, and the disassembly and assembly of inner wheels are not involved in the switching.

Description

Auxiliary rim and wheel type walking equipment

Technical Field

The invention relates to a wheel mounting connector, in particular to an auxiliary rim and a wheel type walking device.

Background

At present, the axle end of most wheel type excavators adopts a double-tire structure, and rims of inner wheels and outer wheels are directly clamped and fixed on a hub at the axle end through annular matrix bolts. The double-tire structure increases the contact area with the ground to improve the stability and increase the trafficability of the wheel excavator on the muddy road, but at the same time, the double-tire structure increases the driving resistance, so that the driving speed of the wheel excavator on the paved road is reduced, and the fuel consumption is increased.

The existing wheel type excavator changes a double tire into a single tire or changes the single tire into the double tire, needs to disassemble and assemble a plurality of bolts, and is inconvenient to operate.

Disclosure of Invention

The invention provides an auxiliary rim and wheel type walking equipment to solve the technical problem that double tires and single tires at the end part of a wheel type excavator axle are inconvenient to switch, so that the end part of the axle of the wheel type walking equipment can be quickly and conveniently switched between the double tires and the single tires.

The technical scheme for realizing the purpose of the invention is as follows: constructing an auxiliary rim, which is characterized by comprising a fixing structure, a quick-change structure and a locking device;

the fixing structure comprises a mounting flange and a first cylinder part, wherein the axial inner end of the first cylinder part is fixedly connected with the mounting flange and the mounting flange are coaxially arranged;

the quick-change structure comprises a rim connecting flange and a second cylinder part, wherein the outer axial end of the second cylinder part is fixedly connected with the rim connecting flange and the rim connecting flange are coaxially arranged; the axial inner side end of the second cylinder part is connected with the axial outer side end of the first cylinder part in a plugging and sleeving manner;

the locking device is used for locking and connecting the first barrel part and the second barrel part which are connected together by the plug bush to limit the second barrel part to move towards the axial outer side relative to the first barrel part.

In the invention, the auxiliary rim is used for installing the outer wheel on the outer side of the inner wheel at the end part of the axle, the installation flange plate is used for being fixedly connected with the hub of the axle, and the rim connecting flange plate is used for being fixedly connected with the rim of the outer wheel.

In the present invention, the axial direction in the "axially inner end" and the "axially outer end" refers to the central axes of the first and second tube members, that is, the wheel shaft after the auxiliary rim is mounted to the vehicle axle. The "inboard end" refers to the end of the auxiliary rim toward the center of the axle after it is mounted to the axle, and the "outboard end" is the end opposite the "inboard end".

In the auxiliary rim, the locking device comprises a screw rod rotatably arranged in the second cylinder part, a screw rod nut axially and slidably connected with the second cylinder part and a plurality of hooks; the screw rod is parallel to or coincided with the central axis of the second cylinder part; the hooks are arranged at intervals in the circumferential direction of the screw nut, the first end of each hook is rotatably connected with the screw nut through a first pin shaft, so that the second end of each hook can swing around the first pin shaft in the plane of the central axis of the second cylinder part, and the second end of each hook is provided with a hook part; and the first cylinder part is provided with hooks which correspond to the hooks one by one and are matched with the hook parts.

In the auxiliary rim, a support is arranged on the second cylinder part corresponding to each hook, a guide pin is arranged on the support, a guide long hole for accommodating the guide pin is arranged on each hook, and the distance between the axial outer side end of the guide long hole and the central axis of the second cylinder part is larger than the distance between the axial inner side end of the guide long hole and the central axis of the second cylinder part.

In the auxiliary rim, an axial through hole is formed in the center of the rim connecting flange plate, and a bearing for rotatably mounting the screw rod is mounted in the axial through hole.

In the auxiliary rim of the present invention, the hook is formed of a hole provided in the first tube member, and an axially outer side hole wall of the hole is a hook support surface which is brought into contact with the hook portion.

In the auxiliary rim, the hook part of the hook is provided with a supporting block through a second pin shaft, the second pin shaft is parallel to the first pin shaft, the hook supporting surface is a plane, and the supporting block is provided with a hook part supporting surface attached to the hook part supporting surface.

In the auxiliary rim, an auxiliary fixture block matched with the hook part supporting surface is fixedly arranged at the position where the hole is formed on the first cylinder part, and a fixture block supporting surface on the auxiliary fixture block, which is in contact with the hook part supporting surface, is flush with the hook buckle supporting surface.

In the auxiliary rim, the axial inner side end of the second cylinder part and the auxiliary fixture block are respectively positioned on the radial inner side and the radial outer side of the first cylinder part; or the axial inner side end of the second cylinder part and the auxiliary clamping block are positioned on the radial inner side or the radial outer side of the first cylinder part at the same time, and an avoiding groove for avoiding the auxiliary clamping block is formed in the second cylinder part.

In the auxiliary rim of the present invention, the first tube member and the second tube member are both in a regular prism shape; the first cylindrical part and the second cylindrical part in the regular prism shape can be accurately positioned when the plug bushes are connected, and can prevent the first cylindrical part and the second cylindrical part from rotating relatively, so that torque transmission is realized.

The first cylinder part and the second cylinder part can be both cylindrical; a plurality of guide blocks are fixedly mounted on the first cylinder part, are uniformly distributed on the outer side surface of the cylinder of the first cylinder part at intervals in the circumferential direction, and are provided with guide grooves corresponding to the guide blocks in a matched mode. The guide block cooperates with the guide way, can be so that when second section of thick bamboo part is connected with first section of thick bamboo part plug bush, couple and the accurate alignment of hasp, can also prevent the relative first section of thick bamboo part of second section of thick bamboo part to rotate after fixed knot structure and quick change structural connection simultaneously to realize the effect of transmission moment of torsion.

The technical scheme for realizing the purpose of the invention is as follows: the wheel type walking equipment is characterized in that the auxiliary rim is installed at the end part of the twin axle, the mounting flange and the rim of the inner wheel are fixedly connected with the hub of the twin axle, the rim of the outer wheel is fixedly connected with the rim connecting flange, and the inner wheel is abutted against the outer wheel.

Compared with the prior art, the auxiliary rim is used in the wheel type walking equipment, the switching operation of the axle between the single-tire structure and the double-tire structure is simple and convenient, and the disassembly and assembly of the inner side wheel are not involved in the switching.

Drawings

Fig. 1 is a schematic structural view of the auxiliary rim of the present invention when mounted on an axle.

Fig. 2 is an exploded view of the auxiliary rim of the present invention as installed on an axle.

Fig. 3 is a schematic structural view of a fixing structure in the auxiliary rim of the present invention.

Fig. 4 is a sectional view of the quick-change structure in the auxiliary rim of the present invention.

Fig. 5 is a sectional view of the locking device in the auxiliary rim of the present invention in an unlocked state.

Fig. 6 is a cross-sectional view of the locking device in the auxiliary rim of the present invention in a locked state.

Fig. 7 is a schematic structural view of the locking device in the auxiliary rim of the present invention in a locked state.

Part names and serial numbers in the figure:

axle 1, hub 11, inboard wheel rim 12, outboard wheel rim 13.

The fixing structure 4, the mounting flange 41, the first barrel part 42, the hook 43, the hook supporting surface 431, the auxiliary latch 44, the latch supporting surface 441 and the guide block 45.

The quick-change structure 5, the rim connecting flange 51, the second cylindrical part 52, the support 53, the axial through hole 54, the rib 55, the guide pin 56, the guide groove 57 and the avoidance groove 58.

The locking device 6, the screw rod 61, the screw rod nut 62, the hook 63, the supporting block 64, the hook supporting surface 641, the first pin shaft 65, the second pin shaft 66, the bearing 67 and the long guide hole 68.

Detailed Description

The following description of the embodiments refers to the accompanying drawings.

Fig. 1 and 2 show that the auxiliary rim of the embodiment of the invention comprises a fixing structure 4, a quick-change structure 5 and a locking device 6.

As shown in fig. 3, the fixing structure 4 includes a mounting flange 41 and a first cylindrical member 42, and an axially inner end of the first cylindrical member 42 is fixedly connected to the mounting flange 41 and coaxially arranged.

As shown in fig. 4, the quick-change structure 5 includes a rim connecting flange 51, a second barrel member 52, and an axially outer end of the second barrel member 52 is fixedly connected to the rim connecting flange 51 and coaxially arranged.

As shown in fig. 1 and 2, the first tubular member 42 and the second tubular member 52 are both cylindrical members, and the axially inner end of the second tubular member 52 is inserted and connected to the axially outer end of the first tubular member 41. And the second cylinder member 52 is located radially outwardly of the first cylinder member 42.

In the present invention, "axial" in "axially inner end" and "axially outer end" means the central axes of the first and second tube members, that is, the wheel axle after the auxiliary rim is mounted to the vehicle axle. The "inboard end" refers to the end of the auxiliary rim toward the center of the axle after it is mounted to the axle, and the "outboard end" is the end opposite the "inboard end".

Three guide blocks 45 (the number of the guide holes can be set according to requirements, and usually is two to four) are fixedly mounted on the first cylinder part 42, and the three guide blocks 45 are circumferentially and uniformly distributed on the outer cylindrical surface of the first cylinder part 42 at intervals. As shown in fig. 7, the second cylindrical member 52 is provided with guide grooves 57 which are fitted to the respective guide blocks 45. The guide block 45 is matched with the guide groove 57, so that when the second cylinder part 52 is inserted into and connected with the first cylinder part 42, the second cylinder part 52 is inserted into and connected with the first cylinder part 42 in a fixed posture, accurate alignment connection of relevant parts is realized, and meanwhile, the second cylinder part 52 can be prevented from rotating relative to the first cylinder part 42 after the fixing structure 4 is connected with the quick-change structure 5, so that the effect of transmitting torque is realized.

In an embodiment of the present invention, the first and

second barrel members

42, 52 may also be regular prism-shaped; the first cylindrical member 42 and the second cylindrical member 52, which are formed in a regular prism shape, can be accurately positioned when the male and female members are connected, and can be prevented from rotating relative to each other, thereby achieving torque transmission. When the first cylindrical member and the second cylindrical member are formed in a regular prism shape, the first cylindrical member and the second cylindrical member do not need to be provided with the guide blocks and the guide grooves.

As shown in fig. 4, the locking device 6 includes a lead screw 61 rotatably disposed in the second cylinder member, a lead screw nut 62 connected with the second cylinder member 52 in a relatively axial translational manner, and three hooks 63 (which may be increased or decreased as required, and are usually three to four).

The center of the rim connecting flange 51 is provided with an axial through hole 54, a bearing 67 is installed in the axial through hole 54, the outer end of the screw rod 61 is fixed in the inner ring inner hole of the bearing 67, the screw rod 61 is overlapped with the central axis of the second cylinder part 52, and the quick-change structure 5 is rotatably installed through the bearing 67.

In this embodiment, three hooks 63 are uniformly arranged around the screw nut 62 at intervals in the circumferential direction, and a first end of each hook 63 is rotatably connected to the screw nut 62 through a first pin 65, so that a second end of each hook 63 can swing around the first pin 65 in a plane where the central axis of the second cylindrical member 52 is located, and a hook portion is provided at the second end of each hook 63; the first cylinder member 42 is provided with hooks 43 which correspond to the hooks one by one and engage with the hook portions.

As shown in fig. 3 and 5, the hook 43 of the first tubular member 42 is formed by a hole provided in the first tubular member 42, the hole being a rectangular hole, and the axially outer wall of the hole being a hook support surface 431 which is in contact with the hook.

As shown in fig. 4 and 5, the hook of the hook 63 has a support block 64 mounted via a second pin 66, the second pin 66 is parallel to the first pin 65, the hook support surface 431 is a plane, and the support block 64 has a hook support surface 641 attached to the hook support surface 431. The supporting block 64 rotating around the second pin 66 is provided, so that when the hook 63 is connected and matched with the hook 43, the supporting block 64 can adjust the posture in a self-adaptive manner, so that the hook 63 and the hook contact surface 431 are in plane contact all the time, that is, when the locking device is locked, the hook support surface 641 is attached to the hook support surface 431 all the time.

As shown in fig. 3 and 5, an auxiliary latch 44 for engaging with the hook supporting surface 641 is fixedly mounted on the first barrel member 42 at the hole installation position, the auxiliary latch 44 is located at the radial outer side of the first barrel member 42, and a latch supporting surface 441 of the auxiliary latch 44 for contacting with the hook supporting surface 641 is flush with the hook supporting surface 431. The auxiliary fixture block 44 is arranged to increase the contact area of the fixed structure 4 with the hook 63 when the locking device is locked.

In the present invention, the auxiliary latch 44 may be fixedly mounted on the radial outer side of the first cylinder member 42, or may be fixedly mounted on the radial inner side of the first cylinder member 42. The inner end of the second tubular member 52 may be fitted radially outward of the first tubular member 42, or may be inserted radially inward of the first tubular member 42. When the second cylinder member 52 and the auxiliary latch 44 are both located radially inside the first cylinder member 42 or radially outside the first cylinder member 42, an escape groove 58 for avoiding the auxiliary latch needs to be provided on the second cylinder member 52 so that the second cylinder member 52 and the first cylinder member 42 are not inserted into each other in the case where the locking device is unlocked.

As shown in fig. 4 and 5, a support 53 is provided on the second cylinder member corresponding to each hook 63, and the support 53 is fixed to the rib 55 on the inner wall of the second cylinder member 52 by a bolt. The support 53 is provided with a guide pin 56, the hook 63 is provided with a guide long hole 68 for accommodating the guide pin, and the distance between the axial outer end of the guide long hole 68 (the position of the guide pin in fig. 5) and the central axis of the second cylinder member 52 is larger than the distance between the axial inner end of the guide long hole and the central axis of the second cylinder member.

As shown in fig. 4 and 5, when the screw 61 is rotated and the screw nut 62 moves from the axial outer end to the axial inner end (the screw nut moves in the direction of the fixed structure), the hook 63 follows the screw nut 62 and moves from the axial outer end to the axial inner end, and the hook support surface 641 of the support block 64 is out of contact with the hook support surface 431. At the same time, the position of the guide pin 56 in the guide long hole 68 is moved to the axial outer end of the guide long hole 68 (as shown in fig. 5), and due to the interaction of the guide pin 56 and the guide long hole 68, the second end (hook setting end) of the hook 63 moves toward the inside of the first tube member 42, retracts from the hook 43 (hole) to the inside of the first tube member 42, the locking device 6 is unlocked, and the second tube member 52 can move toward the outer end relative to the first tube member 42 to be separated from the first tube member 42. Correspondingly, when the screw rod 61 is rotated reversely, the screw rod nut 62 moves towards the axial outer end direction, the hook part of the hook 63 moves towards the axial outer end direction and simultaneously extends into the hook buckle 43 (hole), the hook part supporting surface 641 of the supporting block 64 contacts with the hook buckle supporting surface 641, and because the first cylinder part 4 is a fixed part, the hook 63 pulls the quick-change structure 5 to move towards the axial inner end direction through the screw rod nut 62, the screw rod 61 and the bearing 67 until the outer tire on the quick-change structure 5 is abutted to the inner tire or a rubber ring between the inner tire and the outer tire is clamped, so that the quick-change structure is locked and fixed on the fixed structure.

The embodiment of the invention provides wheel type walking equipment, such as a wheel type excavator. At least one axle 1 of the axles of the wheel type walking equipment is a dual-tyre axle (on a wheel type excavator, two axles are in a dual-tyre structure in an operating state), as shown in fig. 1 and fig. 2, an inner wheel and an outer wheel are installed at the end part of the dual-tyre axle, the auxiliary rim is installed at the end part of the dual-tyre axle, a mounting flange 41 and an inner wheel rim 12 are fixedly connected with a hub 11 of the dual-tyre axle through bolts, an outer wheel rim 13 is fixedly connected with a rim connecting flange 51, an inner wheel is abutted against the outer wheel, and usually, the inner wheel rim 12 is in direct contact or indirect contact connection with the outer wheel rim 13 (a cushion plate is placed between the two rims).

In the wheel type walking equipment, the ground holding force and the stability of the equipment are increased due to the need during operation, and the axle of the equipment adopts a double-tire structure. When the wheel type walking equipment walks, in order to improve the trafficability characteristic and reduce the walking resistance, the end part of the axle is expected to be of a single-tire structure, then the screw rod is rotated, the locking device is unlocked, the quick-change structure is detached from the fixing structure, and the end part of the axle is led into an inner wheel of the oil inlet and is switched into the single-tire structure. Correspondingly, when the single-tire structure is converted into the double-tire structure, the quick-change structure provided with the outer wheels is only required to be butted with the fixed structure and locked by rotating the screw rod. In the switching process of the double-tire structure and the single-tire structure of the end part, only the locking device needs to be operated, the inner side wheel does not need to be disassembled and assembled, and the switching operation is simple and convenient.

Claims

1. An auxiliary rim is characterized by comprising a fixing structure, a quick-change structure and a locking device;

the fixing structure comprises a mounting flange and a first cylinder part, wherein the axial inner end of the first cylinder part is fixedly connected with the mounting flange and the first cylinder part are coaxially arranged;

the quick-change structure comprises a rim connecting flange and a second cylinder part, wherein the axial outer side end of the second cylinder part is fixedly connected with the rim connecting flange and the rim connecting flange are coaxially arranged; the axial inner side end of the second cylinder part is connected with the axial outer side end of the first cylinder part in a plugging and sleeving manner;

2. The auxiliary rim according to claim 1, wherein the locking device comprises a lead screw rotatably disposed in the second tubular member, a lead screw nut coupled to the second tubular member for axial translation, and a plurality of hooks; the screw rod is parallel to or coincided with the central axis of the second cylinder part; the hooks are arranged at intervals in the circumferential direction of the screw nut, the first end of each hook is rotatably connected with the screw nut through a first pin shaft, so that the second end of each hook can swing around the first pin shaft in the plane of the central axis of the second cylinder part, and the second end of each hook is provided with a hook part; and hooks which are in one-to-one correspondence with the hooks and are matched with the hook parts are arranged on the first cylinder part.

3. The auxiliary rim according to claim 2, wherein a seat is provided on the second tubular member for each of the hooks, a guide pin is provided on the seat, a guide long hole for receiving the guide pin is provided on the hook, and a distance between an axially outer end of the guide long hole and a central axis of the second tubular member is larger than a distance between an axially inner end of the guide long hole and the central axis of the second tubular member.

4. The drop center of claim 2 wherein said rim connecting flange has an axial bore centrally disposed therein, said axial bore having a bearing mounted therein for rotatably mounting said lead screw.

5. The auxiliary rim according to any one of claims 2 to 4, wherein the hook is formed by a hole provided in the first tube member, and an axially outer hole wall of the hole is a hook support surface that is in contact with the hook.

6. The auxiliary rim according to claim 5, wherein the hook portion of the hook has a support block mounted thereon by a second pin, the second pin is parallel to the first pin, the hook support surface is a flat surface, and the support block has a hook support surface attached thereto.

7. The auxiliary rim according to claim 6, wherein an auxiliary block for engaging with the hook supporting surface is fixedly mounted on the first tube member at the position where the hole is provided, and a block supporting surface of the auxiliary block for contacting with the hook supporting surface is flush with the hooking supporting surface.

8. The auxiliary rim according to claim 7, wherein the axially inner end of the second tube member and the auxiliary block are located radially inward and radially outward of the first tube member, respectively;

or the axial inner side end of the second cylinder part and the auxiliary clamping block are positioned on the radial inner side or the radial outer side of the first cylinder part at the same time, and an avoidance groove for avoiding the auxiliary clamping block is formed in the second cylinder part.

9. Auxiliary rim according to any one of claims 1 to 4, characterized in that said first and second cylinder parts are each of regular prism shape;

or the first cylinder part and the second cylinder part are both cylindrical; a plurality of guide blocks are fixedly mounted on the first cylinder part, circumferentially and evenly distributed on the outer side surface of the cylinder of the first cylinder part at intervals, and guide grooves corresponding to the guide blocks are formed in the second cylinder part.

10. A kind of wheel type walking equipment, at least one axle in its axle is a pair of tires axle, the end of the said pair of tires axle installs inboard wheel and outside wheel, characterized by that the end of the said pair of tires axle installs the auxiliary rim of any claim 1 to 9, the said rim of installing flange and inboard wheel is fixedly connected with wheel hub of the pair of tires axle, the said rim of outside wheel and rim connecting flange are fixedly connected, the said inboard wheel is connected with outside wheel looks butt.