A travelling walking mechanism

Abstract

The application discloses a kind of driving walking mechanism, including body, the bottom of body is installed with gyro wheel near two end positions, through gyro wheel cooperation guide rail, guide rail uses I-shaped rail or T-shaped rail, reduction machine is installed on the side of the body, reduction machine is connected one of the gyro wheel, driving motor for providing torque is installed at the input end of the reduction machine, notch is provided in the bottom of the body, passive lifting brake device is provided at the notch, force device is provided at the front end of the body, the force device is slid back after being forced, drive the brake device clamping guide rail after sliding, the brake of body is completed at this time, first notch is provided at the top of the body near the front end, and guide buffer device is installed at the first notch and cooperates with the force device;The device is braked by embracing guide rail, and the braking force is more powerful.

Description

Technical Field

[0001] This invention relates to the field of lifting, and in particular to a traveling mechanism for a crane. Background Technology

[0002] Overhead crane, also known as gantry crane, overhead crane, or gantry crane, is a general term for a type of crane. Overhead crane is basically the same as what we call gantry crane or bridge crane.

[0003] The overhead crane is composed of a traveling mechanism and a gantry frame, and is used for lifting and hoisting through the gantry frame and steel cables.

[0004] The traveling mechanism is positioned and guided by guide rails erected on both sides. Limiters need to be installed at both ends of the guide rails, and emergency stop switches are installed at the limiters. When the traveling mechanism moves to the end of the guide rail, the emergency stop switch is activated to cut off the power to the traveling vehicle. After the power is cut off, the traveling vehicle still has inertia, so it is rigidly limited by the limiters.

[0005] When rigid limiting is applied, it will cause an impact on the equipment.

[0006] In the existing technology, there are also technical solutions that install rail clamps at both ends of the traveling mechanism. However, the rail clamps use the property that the electromagnet loses its magnetism when the power is cut off. After the power is cut off, the rebound force is used for braking. The braking force generated by the rail clamps with this structure is relatively limited and can only be used in small cranes. In cranes with a capacity of more than 40 tons, the braking force provided by the rail clamps with this structure is extremely limited.

[0007] To address this, we have developed a braking mechanism specifically designed for heavy-duty overhead cranes, which achieves braking force through locking guide rails. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a vehicle traveling mechanism that achieves braking by locking the guide rail, resulting in stronger braking force.

[0009] To solve the above problems, the present invention adopts the following technical solution:

[0010] A traveling mechanism includes a body, with rollers installed at the bottom near both ends of the body. The rollers cooperate with guide rails, which are either I-beam rails or T-beam rails. A speed reducer is installed on the side of the body, connected to one of the rollers. A drive motor for providing torque is installed at the input end of the speed reducer. A slot is provided at the bottom of the body, and a passively lifting brake device is provided at the slot. A force-receiving device is provided at the front end of the body. When the force-receiving device is subjected to force, it slides backward, driving the brake device to clamp the guide rail, thus braking the body. A first slot is provided at the top of the body near the front end, and a guide buffer device that cooperates with the force-receiving device is installed at the first slot.

[0011] Preferably, the braking device includes a beam that is inserted into the body through the slot and is mounted against the inner wall of the body. C-shaped hook plates are provided at both ends of the bottom of the beam. The hook plates are formed by bending the beam. A brake pad is detachably installed at the inner bottom of the hook plate. A guide rod is provided on the top of the hook plate, located on the outer side of the beam, and is vertically oriented. Frame plates are provided on both sides of the body, above the slot. The guide rod passes upward through the frame plate and engages with a limiting nut. A spring is sleeved on the guide rod, acting between the limiting nut and the frame plate. Supported by the spring, the hook plate and guide rail are in clearance fit, and a gap is formed between the inner top of the beam and the guide rail for inserting a force-bearing device. When the force-bearing device is inserted through this gap, it lifts the beam, causing the brake pad to move upward and act on the guide rail to generate braking force.

[0012] Preferably, the force-bearing device includes an insert plate with a wedge end at its rear end, the height of which gradually decreases towards the rear. An impact rod is provided at the front end of the insert plate, penetrating forward through the body. The insert plate is guided and slid by the guide buffer device. When the impact rod is subjected to force, it moves backward, and the wedge end is inserted into the interior of the beam. As the wedge end continues to be inserted, the beam is lifted by the action of the insert plate. At this time, the brake pads act upward on the guide rail to generate braking force.

[0013] Preferably, the guide buffer device includes a cover plate covering the first slot, and a sliding groove is provided on the two inner side walls of the cover plate. The rear end of the sliding groove is closed, and the front end of the sliding groove penetrates the cover plate. An embedding hole is provided on the two inner side walls of the cover plate, and the embedding hole communicates with the sliding groove. A rubber post is embedded in the embedding hole. Sliding posts are provided on both sides of the insert plate near the front end. The sliding posts cooperate with the sliding groove. When the sliding posts slide along the sliding groove, they are elastically blocked by the rubber posts.

[0014] Preferably, the front end of the impact bar is fitted with a rubber protective sleeve.

[0015] Preferably, a baffle is provided near the front end of the outer wall of the impact rod, and a first spring is sleeved on the impact rod, with the first spring located behind the baffle.

[0016] Preferably, the rubber column is solid.

[0017] Preferably, a wear-resistant plate is provided on the inner top of the beam, and the bottom of the wear-resistant plate is polished smooth.

[0018] The beneficial effects of this invention are:

[0019] One advantage is that this device, through the extension of the impact rod, can make contact with the emergency stop switch in advance, giving the guide rail more leeway to allow the vehicle to stop due to inertia.

[0020] Secondly, when the guide rail has insufficient clearance to stop the vehicle, the continued movement of the vehicle increases the depth of the impact bar inserted into the main body, which eventually triggers the braking device. The passively raised braking device locks the guide rail to achieve braking of the vehicle, resulting in stronger braking force.

[0021] Thirdly, the guide buffer device can guide the displacement of the insert plate. Secondly, while guiding, the guide buffer device can also decelerate the insert plate, completing the initial deceleration of the vehicle. When the initial deceleration can bring the vehicle to a stop, the braking device will not be activated. When the initial deceleration is insufficient to bring the vehicle to a stop, the vehicle's continued forward movement will trigger the braking device. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram showing the interaction between the braking device and the track.

[0025] Figure 3 This is a three-dimensional view of the braking device;

[0026] Figure 4 This is a three-dimensional diagram of the force-bearing device;

[0027] Figure 5 This is a cross-sectional view of the guide buffer device;

[0028] Figure 6 This is a cross-sectional view of the guide buffer device. Detailed Implementation

[0029] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0030] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0031] In the description of this invention, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0032] Furthermore, in the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] See Figure 1 and Figure 2The illustrated traveling mechanism includes a body 1. Rollers 2 are installed at the bottom of the body 1 near both ends, and guide rails 3 (I-beam rails) are connected to the rollers 2. A reducer 4 is installed on the side of the body 1, and the reducer 4 is connected to one of the rollers 2. A drive motor 41 for providing torque is installed at the input end of the reducer 4. A slot 101 is provided at the bottom of the body 1, and a passively lifting brake device 5 is provided at the slot 101. A force-bearing device 6 is provided at the front end of the body 1. When the force-bearing device 6 is subjected to force, it slides backward, and after sliding, it drives the brake device 5 to clamp the guide rail 3, thus completing the braking of the body 1. A first slot 102 is provided at the top of the body 1 near the front end, and a guide buffer device 7 that cooperates with the force-bearing device 6 is installed at the first slot 102.

[0035] During use, limiters are installed at both ends of the guide rail 3. The function of the limiters is to restrict the further displacement of the traveling mechanism. An emergency stop switch is installed at the limiter. The traveling mechanism first contacts the emergency stop switch, which cuts off the power to the traveling mechanism. After the power is cut off, if the inertia of the traveling vehicle still causes it to slip, the force-bearing device 6 acts on the limiter to buffer the force, giving the traveling vehicle space to continue to slip due to inertia. As the traveling vehicle slips further, the force-bearing device 6 lifts the braking device 5, which locks the guide rail 3, thus restricting the inertial movement of the traveling vehicle and achieving the technical effect of safety protection.

[0036] See Figure 1 and Figure 3 As shown, the braking device 5 includes a beam 51, which is inserted into the body 1 through the slot 101. The beam 51 is installed against the inner wall of the body 1. C-shaped hook plates 52 are provided at both ends of the bottom of the beam 51. The hook plates 52 are formed by bending the beam 51. A brake pad 53 is detachably installed at the bottom inner position of the hook plate 52. A guide rod 54 is provided on the top of the hook plate 52, outside the beam 51. The guide rod 54 is vertically arranged. On both sides of the body 1, above the slot 101, there are... A frame plate 103 is placed, and the guide rod 54 passes upward through the frame plate 103 and is fitted with a limiting nut 55. A spring 56 is sleeved on the guide rod 54. The spring 56 acts between the limiting nut 55 and the frame plate 103. Under the support of the spring 56, the hook plate 52 is fitted with the guide rail 3 with a clearance, and a gap is formed between the inner top of the beam 51 and the guide rail 3 for inserting the force-bearing device 6. When the force-bearing device 6 is inserted through this gap, it lifts the beam 51. At this time, the brake pad 53 moves upward and acts on the guide rail 3 to generate a braking force.

[0037] In the above technical solution, the spring 56 maintains the clearance fit between the beam 51, the brake pad 53 and the guide rail 3, and prevents the brake device 5 from contacting the guide rail 3 before reaching the limit position, so that the sliding of the vehicle is smoother.

[0038] When the vehicle slips beyond its travel range, the lifting force-bearing device 6 lifts the beam 51, causing the brake pads 53 to move upward and act on the inner top surface of the guide rail 3, thus clamping the brake pads with the guide rail and preventing further displacement of the vehicle.

[0039] See Figure 4 As shown, the force-bearing device 6 includes an insert plate 61. The rear end of the insert plate 61 is provided with a wedge end 62, the height of which gradually decreases towards the rear. The front end of the insert plate 61 is provided with an impact rod 63, which passes forward through the body 1. The insert plate 61 is guided and slid by the guide buffer device 7. When the impact rod 63 is subjected to force, it moves backward, and the wedge end 62 is inserted into the interior of the beam 51. As the wedge end 62 continues to be inserted, the beam 51 is lifted up by the action of the insert plate 61. At this time, the brake pad 53 acts upward on the guide rail 3 to generate braking force.

[0040] First, the emergency stop switch is activated by the impact rod 63, which disconnects the power supply to the vehicle. As the vehicle continues to slide along the guide rail 3 due to inertia, the impact rod 63 is locked by the limiter, causing it to move inward toward the body 1. At this time, the wedge end 62 is inserted into the inner side of the beam 51. As the insert plate 61 is further inserted, the beam 51 is lifted, and the brake pad 53 locks the guide rail 3, thus braking the vehicle.

[0041] See Figure 4 , Figure 5 and Figure 6 As shown, the guide buffer device 7 includes a cover plate 71 covering the first slot 102. A sliding groove 72 is provided on the two inner side walls of the cover plate 71. The rear end of the sliding groove 72 is closed, and the front end of the sliding groove 72 penetrates the cover plate 71. An embedding hole 73 is provided on the two inner side walls of the cover plate 71. The embedding hole 73 communicates with the sliding groove 72. A rubber post 74 is embedded in the embedding hole 73. A sliding post 611 is provided on both sides of the insert plate 61 near the front end. The sliding post 611 is fitted into the sliding groove 72. When the sliding post 611 slides along the sliding groove 72, it is elastically blocked by the rubber post 74.

[0042] In the above technical solution, the sliding column 611 and the sliding groove 72 cooperate to guide the movement of the insert plate 61. When the front end of the impact rod 63 is limited and the vehicle still has forward inertia, the sliding column 611 slides along the sliding groove 72 and breaks through the squeezing rubber column 74 one by one. The rubber column 74 helps the vehicle to decelerate, so as to further reduce the forward inertia of the vehicle. The end of the sliding groove 72 is closed to prevent the insert plate 61 from moving beyond its travel range.

[0043] The rubber column 74 is solid.

[0044] The rubber column 74 is made of elastic rubber. It can deform and retract to the outside of the groove 72 when compressed.

[0045] See Figure 4 As shown, the front end of the impact rod 63 is fitted with a rubber protective sleeve 6111.

[0046] The rubber protective sleeve 6111 serves a certain cushioning function.

[0047] See Figure 4 As shown, a baffle 612 is provided near the front end of the outer wall of the impact rod 63, and a first spring 613 is sleeved on the impact rod 63. The first spring 613 is located behind the baffle 612.

[0048] In the above technical solution, when the braking device 5 is insufficient to keep the vehicle stopped and the sliding column 611 has not reached the end of the sliding groove 72, the first spring 613 is applied between the baffle 612 and the body 1 to form the final energy absorption. When the first spring 613 is compressed to the limit position, the sliding column 611 reaches the end of the sliding groove 72 and completes the rigid limit.

[0049] See Figure 3 As shown, a wear-resistant plate 555 is provided on the inner top of the beam 51, and the bottom of the wear-resistant plate 555 is polished smooth.

[0050] The wear-resistant plate 555 bears the wear, and secondly, after being polished smooth, it makes it easier for the insert plate 61 to pass through.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A traveling mechanism for a crane, characterized in that: The system includes a main body (1), with rollers (2) installed at the bottom near both ends of the main body (1). The rollers (2) cooperate with guide rails (3), which are either I-beams or T-beams. A speed reducer (4) is installed on the side of the main body (1), and the speed reducer (4) is connected to one of the rollers (2). A drive motor (41) for providing torque is installed at the input end of the speed reducer (4). A slot (101) is provided at the bottom of the main body (1), and a passive lifting brake device (5) is provided at the slot (101). A force-bearing device (6) is provided at the front end of the main body (1). After the force-bearing device (6) is subjected to force, it slides backward and drives the brake device (5) to clamp the guide rail (3), thus completing the braking of the main body (1). A first slot (102) is provided at the top of the main body (1) near the front end, and a guide buffer device (7) that cooperates with the force-bearing device (6) is installed at the first slot (102). The braking device (5) includes a beam (51), which is inserted into the body (1) through the slot (101). The beam (51) is installed against the inner wall of the body (1). C-shaped hook plates (52) are provided at both ends of the bottom of the beam (51). The hook plates (52) are formed by bending the beam (51). A brake pad (53) is detachably installed at the bottom of the hook plate (52). A guide rod (54) is provided on the top of the hook plate (52) on the outside of the beam (51). The guide rod (54) is vertically arranged. On both sides of the body (1), above the slot (101) are provided... A frame plate (103) is placed, and the guide rod (54) passes upward through the frame plate (103) and is fitted with a limit nut (55). A spring (56) is sleeved on the guide rod (54). The spring (56) acts between the limit nut (55) and the frame plate (103). Under the support of the spring (56), the hook plate (52) is fitted with the guide rail (3) with a clearance, and a gap is formed between the inner top of the beam (51) and the guide rail (3) for inserting the force receiving device (6). When the force receiving device (6) is inserted through this gap, it lifts the beam (51). At this time, the brake pad (53) moves upward and acts on the guide rail (3) to generate a braking force. The force-bearing device (6) includes a insert plate (61), and a wedge end (62) is provided at the rear end of the insert plate (61). The height of the wedge end (62) gradually decreases backward. An impact rod (63) is provided at the front end of the insert plate (61). The impact rod (63) passes through the body (1) forward. The insert plate (61) is guided and slid by the guide buffer device (7). When the impact rod (63) is subjected to force, it moves backward. The wedge end (62) is inserted into the interior of the beam (51). As the wedge end (62) continues to be inserted, the beam (51) is lifted up by the action of the insert plate (61). At this time, the brake pad (53) acts upward on the guide rail (3) to generate braking force.

2. The traveling mechanism according to claim 1, characterized in that: The guide buffer device (7) includes a cover plate (71) covering the first slot (102). A sliding groove (72) is provided on the two inner side walls of the cover plate (71). The rear end of the sliding groove (72) is closed. The front end of the sliding groove (72) penetrates the cover plate (71). An embedding hole (73) is provided on the two inner side walls of the cover plate (71). The embedding hole (73) communicates with the sliding groove (72). A rubber column (74) is embedded in the embedding hole (73). A sliding column (611) is provided on both sides of the insert plate (61) near the front end. The sliding column (611) is fitted into the sliding groove (72). When the sliding column (611) slides along the sliding groove (72), it is elastically blocked by the rubber column (74).

3. The traveling mechanism according to claim 1, characterized in that: The front end of the impact bar (63) is fitted with a rubber protective sleeve (6111).

4. The traveling mechanism according to claim 3, characterized in that: A baffle (612) is provided near the front end of the outer wall of the impact rod (63), and a first spring (613) is sleeved on the impact rod (63). The first spring (613) is located behind the baffle (612).

5. The traveling mechanism according to claim 2, characterized in that: The rubber column (74) is solid.

6. The traveling mechanism according to claim 1, characterized in that: A wear-resistant plate (555) is provided on the inner top of the beam (51), and the bottom of the wear-resistant plate (555) is polished smooth.

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