Movable steering device of wheeled crane

Abstract

The utility model discloses a mobile steering device of a wheeled crane, relates to the technical field of wheeled cranes, and aims to solve the technical problem that a single group of bearings are adopted for bearing in the current rotating base, so that the bearings are easy to wear seriously. The mobile steering device comprises the rotating base, and a driving structure is arranged at the bottom of the rotating base; the rotating base comprises a mounting base. According to the bearing structure, the main bearing and the matched bearings are combined, the main bearing is located in the center, the matched bearings are distributed in a circular shaft mode, and the matched bearings are connected with the rotating base through the butt joint base. Therefore, the plurality of groups of matched bearings which are distributed in the circumferential direction and the main bearing at the center can jointly carry out rotating installation on the rotating seat, the weight on the rotating seat can be jointly borne by the matched bearings and the main bearing, the load of a single bearing can be obviously reduced, and abrasion is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wheel type hoist, more particularly to a mobile steering device of wheel type hoist. BACKGROUND

[0002] The tire type hoist is commonly known as the tire crane, which is a rotating hoist with a tire type chassis. In order to facilitate the movement and steering, a mobile steering device, i.e. a rotating base, is usually provided. The mobile steering of the wheel type hoist is mainly realized by the rotating base.

[0003] The existing rotating base mainly realizes the rotating effect through bearings, which need to bear the huge weight of the upper structure of the hoist, including the hoist arm and counterweight. In the common rotating base, a single bearing is usually used for connection and installation. Therefore, the single bearing needs to completely bear the huge weight of the upper structure of the hoist. The bearing continuously operates under such high load, and the ball and the raceway will gradually generate a large wear, resulting in an increased gap. When the gap is too large, the upper structure of the hoist is prone to shaking or vibrating when rotating, thereby causing the heavy object to be unstable and increasing the safety risk. In view of this, the present utility model provides a mobile steering device of wheel type hoist. SUMMARY

[0004] The utility model aims at overcoming the deficiency of prior art, adapting to the actual need, providing a kind of mobile steering device of wheel type hoist to solve the technical problem that single bearing is used for bearing in the current rotating base, and the bearing wear is prone to being large.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a kind of mobile steering device of wheel type hoist, including rotating base, the bottom of rotating base is arranged with driving structure, the rotating base includes mounting seat, the inside of mounting seat is arranged with bearing structure, the rotating seat is arranged on the bearing structure, the bearing structure includes installation base, the installation base is arranged in the bottom of mounting seat, the central portion of installation base is arranged with main bearing, the installation base is arranged with several groups of matched bearings at equidistance, the top of matched bearing is arranged with docking seat, and the docking seat is movably connected with rotating seat;

[0006] The main bearing and the matched bearing structure are the same, the matched bearing includes sleeve and inner sleeve, and a circular platform cavity is reserved between the sleeve and the inner sleeve, a retainer is arranged in the circular platform cavity, and a plurality of groups of cylindrical rolling elements are arranged at equidistance on the retainer, the rolling elements are located in the circular platform cavity, and the cylindrical rolling elements and the retainer are combined in a circular platform shape.

[0007] The utility model discloses a bearing structure, bearing structure is combined through main bearing and fit bearing, and the main bearing is located at the center, and the fit bearing is in the form of circle shaft distribution, and the fit bearing is connected with the rotating seat through the butt joint seat, therefore, the fit bearing of several groups of circumferential distribution and the main bearing at the center can be installed in rotation to the rotating seat together, and the weight on the rotating seat can be borne together through the fit bearing and the main bearing, so that the load of single bearing can be reduced significantly, thereby reducing the abrasion, the utility model discloses fit bearing and main bearing adopt the same structure design, the outer cover and the inner cover of fit bearing adopt the circular platform cavity design, then install several groups of cylindrical rolling element in the circular platform cavity through the circular platform retainer, and several groups of cylindrical rolling element combination form the circular platform, therefore, fit bearing and main bearing can bear axial and radial load simultaneously, and the contact area between the cylindrical rolling element and the circular platform cavity is larger, can disperse pressure better, further reduces the abrasion of fit bearing and main bearing in the working process.

[0008] Preferably, the driving structure comprises a motor, a speed reducer and a connecting shaft, the speed reducer is arranged at the bottom center of the rotating base, the motor is arranged on the speed reducer, the connecting shaft is arranged on the output rotating shaft of the speed reducer, and one end of the connecting shaft is connected with the rotating seat and penetrates through the mounting seat.

[0009] Preferably, the mounting base comprises a main circular seat, a plurality of connecting blocks are arranged at equal intervals around the main circular seat, one end of the connecting block is connected with a fit circular seat, the main bearing is arranged on the main circular seat, and the fit bearing is arranged on the fit circular seat.

[0010] Preferably, the butt joint seat comprises a mounting column, the mounting column is connected with the inner sleeve of the fit bearing, a support base is arranged at the top end of the mounting column, an L-shaped edge is arranged around the bottom of the rotating seat, and the bottom of the L-shaped edge is in contact with the support base.

[0011] Preferably, a gear is arranged at the top center of the support base, a tooth groove corresponding to the gear is arranged on the inner wall of the L-shaped edge, and the tooth groove is engaged with the gear.

[0012] Preferably, a limiting top disc is arranged at the top of the gear, a limiting groove is formed between the L-shaped edge and the rotating seat, and the limiting top disc extends into the limiting groove.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. The utility model discloses a bearing structure, bearing structure is combined through main bearing and fit bearing, and the main bearing is located at the center, and the fit bearing is in the round shaft distribution, and the fit bearing is connected with the rotating seat through the butt joint seat, therefore, the main bearing at the center and the fit bearing of several groups of circumferential distribution can be installed in rotation to the rotating seat together, and the weight on the rotating seat can be borne together through the fit bearing and the main bearing, so that the load of single bearing can be reduced significantly, thereby reducing the abrasion, when solving the technical problem that the single bearing is used to bear in the current rotary base, and the bearing abrasion is easy to appear big, therefore, the utility model has the advantages of low abrasion.

[0015] 2. The utility model discloses that the fit bearing and main bearing adopt the same structure design, and the outer sleeve and the inner sleeve of fit bearing adopt the circular platform cavity design, then install several groups of cylindrical rolling elements in the circular platform cavity through the circular platform retainer, and several groups of cylindrical rolling elements combine to form the circular platform, therefore, the fit bearing and main bearing can bear axial and radial load simultaneously, and the contact area between the cylindrical rolling element and the circular platform cavity is larger, can better disperse the pressure, and further reduce the abrasion of fit bearing and main bearing in the working process. ACCURACY OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the utility model;

[0017] Figure 2 It is the section structure schematic diagram of the utility model;

[0018] Figure 3 It is the bearing structure schematic diagram of the utility model;

[0019] Figure 4 It is the fit bearing first section structure schematic diagram of the utility model;

[0020] Figure 5 It is the fit bearing second section structure schematic diagram of the utility model;

[0021] Figure 6 It is the installation base structure schematic diagram of the utility model;

[0022] Figure 7 It is the installation schematic diagram of the butt joint seat and rotating seat of the utility model.

[0023] Explanation of Markers in the Drawing:

[0024] 1, drive structure; 101, motor; 102, speed reducer; 103, connecting shaft; 2, rotating base; 3, mounting seat; 4, rotating seat; 401, L-shaped edge; 402, tooth groove; 403, limiting groove; 5, bearing structure; 6, mounting base; 601, main circular seat; 602, connecting block; 603, matching circular seat; 7, main bearing; 8, matching bearing; 801, outer sleeve; 802, inner sleeve; 803, circular table cavity; 804, retainer; 805, rolling element; 9, docking seat; 901, mounting column; 902, support base; 903, limiting top disc; 904, gear. DETAILED DESCRIPTION

[0025] As Figures 1 to 7 shown, the utility model relates to a kind of mobile steering device of wheel crane, including rotating base 2, rotating base 2 bottom is arranged with drive structure 1, rotating base 2 includes mounting seat 3, bearing structure 5 is arranged in mounting seat 3, bearing structure 5 is arranged with rotating seat 4, bearing structure 5 includes mounting base 6, mounting base 6 is arranged in mounting seat 3 inner bottom, main bearing 7 is arranged in the center of mounting base 6, a plurality of groups of matching bearings 8 are arranged at equidistance in a week of mounting base 6, and docking seat 9 is arranged in the top of matching bearing 8, and docking seat 9 is movably connected with rotating seat 4;When using the device, rotating seat 4 on rotating base 2 can be rotated by drive structure 1, so that crane upper part (crane arm, counterweight etc.) can be moved steering adjustment, in the use process of rotating base 2, a plurality of groups of matching bearings 8 and main bearing 7 at the center can be installed in rotating seat 4 together, so that the weight on rotating seat 4 can be borne by matching bearing 8 and main bearing 7, which can significantly reduce the load of single bearing, thereby reducing wear.

[0026] Specifically, drive structure 1 includes motor 101, speed reducer 102 and connecting shaft 103, speed reducer 102 is arranged at the center of rotating base 2 bottom, motor 101 is arranged on speed reducer 102, connecting shaft 103 is arranged on the output end rotating shaft of speed reducer 102, one end of connecting shaft 103 is connected with rotating seat 4, penetrating mounting seat 3, motor 101 and speed reducer 102 are matched, then rotating seat 4 is driven to rotate by connecting shaft 103.

[0027] Further, mounting base 6 includes main circular seat 601, a plurality of groups of connecting blocks 602 are arranged at equidistance in a week of main circular seat 601, one end of connecting block 602 is connected with matching circular seat 603, main bearing 7 is arranged on main circular seat 601, and matching bearing 8 is arranged on matching circular seat 603, and main circular seat 601 is used for the installation of main bearing 7, and matching circular seat 603 is used for the installation of matching bearing 8.

[0028] Further, the docking seat 9 comprises a mounting column 901 connected with the inner sleeve 802 of the matched bearing 8, a support base 902 is arranged at the top end of the mounting column 901, an L-shaped edge 401 is arranged around the bottom of the rotating seat 4, and the bottom of the L-shaped edge 401 is in contact with the support base 902; a gear 904 is arranged at the top center of the support base 902, the inner wall of the L-shaped edge 401 is provided with a tooth groove 402 corresponding to the gear 904, the tooth groove 402 is engaged with the gear 904, the rotating seat 4 is supported by the support base 902 through the mounting column 901, and then the pressure is conducted to the matched bearing 8, that is, the matched bearing 8 shares the weight on the top of the rotating seat 4, and when the rotating seat 4 rotates, the tooth groove 402 on the L-shaped edge 401 of the rotating seat 4 cooperates with the gear 904 to drive the mounting column 901 to rotate, so that each group of matched bearings 8 stably supports the rotating seat 4 to rotate, thereby the supporting effect of the matched bearing 8 on the rotating seat 4 is better.

[0029] It is worth noting that the gear 904 is arranged with a limiting top disc 903, and a limiting groove 403 is formed between the L-shaped edge 401 and the rotating seat 4, the limiting top disc 903 extends into the limiting groove 403, and the limiting top disc 903 extending into the limiting groove 403 can play a limiting effect, thereby ensuring the stability of the connection between the docking seat 9 and the rotating seat 4.

[0030] In the embodiment of the utility model, the main bearing 7 and the matched bearing 8 are the same structure, the matched bearing 8 comprises an outer sleeve 801 and an inner sleeve 802, and a circular platform clamping cavity 803 is reserved between the outer sleeve 801 and the inner sleeve 802, a retainer 804 is arranged inside the circular platform clamping cavity 803, and a plurality of groups of cylindrical rolling elements 805 are equidistantly arranged around the retainer 804, the rolling elements 805 are located inside the circular platform clamping cavity 803, and the cylindrical rolling elements 805 and the retainer 804 are combined in a circular platform shape; the matched bearing 8 designed in a circular platform shape can bear axial and radial loads at the same time as the main bearing 7, and the contact area between the cylindrical rolling elements 805 and the circular platform clamping cavity 803 is larger, so that the pressure can be better dispersed, thereby further reducing the wear of the matched bearing 8 and the main bearing 7 during the working process.

[0031] Working principle: the embodiment provides a mobile steering device of a wheel type crane, first, when the device is used, the rotating seat 4 on the rotating base 2 can be driven to rotate through the driving structure 1, so that the upper part (crane arm, counterweight, etc.) of the crane can be moved to adjust the steering, during the use of the rotating base 2, the main bearing 7 at the center and the plurality of groups of matched bearings 8 distributed in a circle can jointly install the rotating seat 4, so that the weight on the rotating seat 4 can be jointly borne by the matched bearings 8 and the main bearing 7, so that the load of a single bearing can be significantly reduced, thereby reducing the wear;

[0032] Secondly, the matching bearing 8 and the main bearing 7 of the circular truncated cone design can bear axial and radial loads at the same time, and the contact area between the cylindrical rolling body 805 and the circular truncated cone cavity 803 is larger, so that the pressure can be better dispersed, and the wear of the matching bearing 8 and the main bearing 7 in the working process can be further reduced.

[0033] The embodiments of the utility model discloses the better embodiment, but is not limited to this, the ordinary skill of the art, the spirit of the utility model is appreciated to the above-mentioned embodiment, and different inferences and changes are made, but as long as not departing from the spirit of the utility model, all are within the protection scope of the utility model.

Claims

1. A moving steering device for a wheeled crane, characterized in that, The system includes a rotating base (2), a driving structure (1) is arranged at the bottom of the rotating base (2), a mounting base (3) is arranged inside the mounting base (3), a bearing structure (5) is arranged on the bearing structure (5), a rotating seat (4) is arranged on the bearing structure (5), the bearing structure (5) includes a mounting base (6), the mounting base (6) is arranged at the bottom inside the mounting base (3), a main bearing (7) is arranged in the center of the mounting base (6), a number of sets of mating bearings (8) are arranged at equal intervals around the mounting base (6), a docking seat (9) is arranged on the top of the mating bearings (8), and the docking seat (9) is movably connected to the rotating seat (4). The main bearing (7) and the mating bearing (8) have the same structure. The mating bearing (8) includes an outer sleeve (801) and an inner sleeve (802). A frustum-shaped cavity (803) is reserved between the outer sleeve (801) and the inner sleeve (802). A cage (804) is arranged inside the frustum-shaped cavity (803), and several sets of cylindrical rolling elements (805) are arranged equidistantly around the cage (804). The rolling elements (805) are located inside the frustum-shaped cavity (803), and the cylindrical rolling elements (805) and the cage (804) are combined to form a frustum shape.

2. The moving steering device for a wheeled crane according to claim 1, characterized in that, The drive structure (1) includes a motor (101), a reducer (102) and a connecting shaft (103). The reducer (102) is arranged at the bottom center of the rotating base (2). The motor (101) is arranged on the reducer (102). The connecting shaft (103) is arranged on the output rotating shaft of the reducer (102). The connecting shaft (103) passes through one end of the mounting base (3) and is connected to the rotating base (4).

3. The moving steering device for a wheeled crane according to claim 1, characterized in that, The mounting base (6) includes a main circular seat (601), and a number of connecting blocks (602) are arranged at equal intervals around the main circular seat (601). One end of the connecting block (602) is connected to a mating circular seat (603). The main bearing (7) is arranged on the main circular seat (601), and the mating bearing (8) is arranged on the mating circular seat (603).

4. The moving steering device for a wheeled crane according to claim 1, characterized in that, The docking seat (9) includes a mounting post (901), which is connected to the inner sleeve (802) of the mating bearing (8). A support base (902) is arranged at the top of the mounting post (901), and an L-shaped edge (401) is arranged around the bottom of the rotating seat (4), with the bottom of the L-shaped edge (401) in contact with the support base (902).

5. A moving steering device for a wheeled crane according to claim 4, characterized in that, A gear (904) is arranged at the top center of the support chassis (902), and a tooth groove (402) corresponding to the gear (904) is arranged on the inner wall of the L-shaped side (401), and the tooth groove (402) meshes with the gear (904).

6. The moving steering device for a wheeled crane according to claim 5, characterized in that, A limiting top plate (903) is arranged on the top of the gear (904), and a limiting groove (403) is formed between the L-shaped edge (401) and the rotating seat (4), and the limiting top plate (903) extends into the limiting groove (403).

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