Limiting device for crane trolley

Abstract

The utility model discloses a crane trolley limiting device and relates to the technical field of cranes. The device comprises a main beam, a side column, a guide rail, a crane carriage, a limiting assembly and a protection assembly, the side column is installed on the main beam in a combined mode, the guide rail is installed on the main beam in a locking mode, the limiting assembly is installed at the inner side end of the side column and comprises a foundation base, a side rod and a center rod, a center cavity and a side cavity are prefabricated in the foundation base, and the center cavity is communicated with the side cavity through an oil connecting cavity. The side rod is slidably mounted in the side cavity, and the center rod is slidably mounted in the center cavity. According to the crane trolley limiting device, multiple structures are matched for buffering, so that the stress of a local structure is effectively reduced, and the service life of the whole device is indirectly prolonged. The limiting assembly and the composite spring are arranged in the cavity structure, hydraulic oil is injected into the cavity structure, the position states of the center rod and the side rods are changed through the hydraulic oil and transfer of the hydraulic oil, efficient buffering limiting is matched, and the overall using effect of the device is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hoist, more specifically to hoist trolley limiting device. BACKGROUND

[0002] The hoist trolley is an important part of the hoist lifting device, is arranged on the main beam of the hoist, walks on the track on the main beam of the hoist, realizes the transverse movement of the hoisted object, due to the large self-weight in the hoist trolley, the irregular shape, in the hoist trolley movement process, if the fault occurs, the danger of trolley out of track will appear.

[0003] The limiting mode of prior art is limited by spring, rod body and other structures, due to the spring exposed in the external humid environment, may appear rust, along with the extension of the use cycle, can reduce the buffering effect, in order to further improve the buffering limiting effect, the inventor researches and proposes the case. UTILITY MODEL CONTENT

[0004] The utility model discloses a hoist trolley limiting device.

[0005] The utility model discloses a hoist trolley limiting device to solve the technical problem.

[0006] A hoist trolley limiting device, including main beam, side column, guide rail, hoist trolley, limiting component, protection component, the side column is combined and installed on the main beam, and the guide rail is locked and installed on the main beam, and the mobile wheel is rotatably installed at the bottom end of the hoist trolley, and the mobile wheel moves along the guide rail, and the protection component is installed at the both ends of the hoist trolley, and the limiting component is installed at the inner side end of the side column, and the limiting component includes base seat, side rod, center rod, and the center cavity and the side cavity are prefabricated and set up on the base seat, and the center cavity is interconnected with the side cavity through the connecting oil cavity, and the side rod is slidably installed in the side cavity, and the center rod is slidably installed in the center cavity, and the composite spring is arranged in the side cavity and the center cavity, and the hydraulic oil is filled in the side cavity and the center cavity.

[0007] A preferred technical scheme: the side end of the center cavity or the side cavity is provided with a limiting block.

[0008] A preferred technical scheme: one center rod is arranged, and two side rods are arranged on the two sides of the center rod.

[0009] A preferred technical scheme: in the initial state, the side end of the center rod is closer to the hoist trolley than the side end of the side rod.

[0010] A preferred technical scheme: the rubber buffer plate is arranged between the limiting component and the side column, and the limiting wheel part is arranged at the both side ends of the guide rail.

[0011] A preferred technical solution: the side end of the hoist trolley is provided with a mounting cavity, the protection assembly comprises a mounting rod, a limiting spring and a protection plate, one end of the mounting rod is connected with the protection plate, and the other end is slidingly installed in the mounting cavity, the limiting spring is nested on the surface of the mounting rod and is installed between the protection plate and the surface of the side end of the hoist trolley.

[0012] A preferred technical solution: a limiting opening is arranged on the mounting cavity, and a limiting block is arranged on the mounting rod.

[0013] A preferred technical solution: the mounting cavity is filled with hydraulic oil.

[0014] The beneficial effects of the utility model are as follows:

[0015] The crane trolley limiting device in the utility model adopts multiple structure cooperation buffering, effectively reduces the stress of local structure, and indirectly prolongs the service life of the whole device. By arranging the protection assembly and cooperating with the limiting assembly, the side end of the hoist trolley can be protected; by arranging the limiting assembly, the composite spring is arranged in the cavity structure, and hydraulic oil is injected in the cavity structure, the position state of the center rod and the side rod is changed through the hydraulic oil and the transfer of the hydraulic oil, and then efficient buffering limiting is cooperated, so that the use effect of the whole device is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

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

[0017] Figure 2 It is Figure 1 It is a local enlarged view of A in the middle;

[0018] Figure 3 It is Figure 1 It is a local enlarged view of B in the middle.

[0019] Mark: 1, main beam; 2, side column; 21, rubber buffer plate; 3, guide rail; 31, limiting wheel part; 4, hoist trolley; 41, moving wheel; 42, mounting cavity; 421, limiting opening; 5, limiting assembly; 51, base; 511, center cavity; 512, side cavity; 513, oil cavity; 52, side rod; 53, center rod; 54, composite spring; 55, limiting rod block; 6, protection assembly; 61, mounting rod; 611, limiting block; 62, limiting spring; 63, protection plate. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0022] As Figures 1 to 3 shown, the embodiment provides a crane trolley limiting device, which comprises a main beam 1, a side column 2, a guide rail 3, a hoist trolley 4, a limiting assembly 5 and a protection assembly 6. The side column 2 is combinedly installed on the main beam 1. The guide rail 3 is fixedly installed on the main beam 1. The hoist trolley 4 is rotatably installed at the bottom end with a moving wheel 41. The moving wheel 41 moves along the guide rail 3. The protection assembly 6 is installed at both ends of the hoist trolley 4. The limiting assembly 5 is installed at the inner side end of the side column 2. The limiting assembly 5 comprises a base seat 51, a side rod 52 and a center rod 53. The base seat 51 is provided with a center cavity 511 and a side cavity 512. The center cavity 511 is in communication with the side cavity 512 through a connecting oil cavity 513. The side rod 52 is slidably installed in the side cavity 512. The center rod 53 is slidably installed in the center cavity 511. A composite spring 54 is arranged in the side cavity 512 and the center cavity 511. The side cavity 512 and the center cavity 511 are filled with hydraulic oil.

[0023] Further, a limiting rod block 55 is arranged at the side end of the center cavity 511 or the side cavity 512. The limiting rod block 55 is used for limiting the outward moving distance of the center rod 53 or the side rod 52. The center rod 53 is arranged in a T-shaped structure, which cooperates with the limiting rod block 55 to limit the center rod 53.

[0024] Further, one center rod 53 is arranged, and two side rods 52 are arranged on both sides of the center rod 53.

[0025] Further, in the initial state, the side end of the center rod 53 is closer to the hoist trolley than the side end of the side rod 52.

[0026] Further, a rubber buffer plate 21 is arranged between the limiting assembly 5 and the side column 2. Limiting wheel members 31 are arranged at the two side ends of the guide rail 3.

[0027] Further, the side end of the trolley 4 is provided with a mounting cavity 42, and the protection assembly 6 comprises a mounting rod 61, a limiting spring 62 and a protection plate 63. One end of the mounting rod 61 is connected with the protection plate 63, and the other end is slidingly mounted to the mounting cavity 42. The limiting spring 62 is nested on the surface of the mounting rod 61 and is mounted between the protection plate 63 and the side end surface of the trolley 4.

[0028] Further, the mounting cavity 42 is provided with a limiting opening 421, and the mounting rod 61 is provided with a limiting block 611. The limiting opening 421 can be understood as a slot structure. A slot opening that slidingly cooperates with the limiting block 611 is arranged on the side surface of the mounting cavity 42. The maximum range of movement of the limiting block 611 corresponds to the edge end position of the slot opening.

[0029] Further, the mounting cavity 42 is filled with hydraulic oil.

[0030] In use, when the protection assembly 6 at the side end of the trolley 4 contacts the limiting assembly 5, the structures on the protection assembly 6 and the limiting assembly 5 cooperate to efficiently realize buffer limiting. The spring and the hydraulic oil cooperate to buffer, thereby ensuring the buffer limiting effect.

[0031] When the protection plate 63 on the protection assembly 6 is stressed, the protection plate 63 will extrude the limiting spring 62, and at the same time, the mounting rod 61 will move into the mounting cavity 42. Since the amount of hydraulic oil in the mounting cavity 42 in the sealed space does not change, the hydraulic oil will play a certain role in dispersing the stress. The trolley 4 is provided with two mounting rods 61 on one side, which effectively ensures that the stress on the protection plate 63 during installation and use can be balanced and symmetrical.

[0032] When the limiting assembly 5 is stressed, the center rod 53 first contacts and is stressed by the protection plate 63. The center rod 53 moves inward to extrude the composite spring 54, and at the same time, the hydraulic oil originally in the center cavity 511 is extruded and transferred to the oil connecting cavity 513, and then enters the side cavity 512 to push the side rod 52 to move outward. After the protection plate 63 at the side end of the trolley 4 extrudes the center rod 53, the protection plate 63 will contact the side rod 52 as the side rod 52 moves outward. At this time, the side rod 52 is stressed to extrude the hydraulic oil in the side cavity 512, and at the same time, the composite spring 54 at the side end of the side rod 52 is stressed to extrude, so that the hydraulic oil in the side cavity 512 is again extruded into the center cavity 511 through the oil connecting cavity 513, so that the center rod 53 on the center cavity 511 moves outward. Through the cooperation of the center rod 53 and the side rod 52, efficient buffer limiting is realized. On the one hand, the composite spring 54 is immersed in the hydraulic oil in the corresponding cavity, which is not easy to rust, thereby effectively ensuring the use effect.

Claims

1. A trolley limiter for a crane, characterized in that The utility model provides a crane trolley, including main beam, side column, guide rail, hoist trolley, limiting component, protection component, the side column is combinedly installed on the main beam, the guide rail is locked and is installed on the main beam, the mobile wheel is rotatably installed at the bottom end of hoist trolley, the mobile wheel moves along the guide rail, and the protection component is installed at the both ends of hoist trolley, the limiting component is installed to the inboard end of side column, the limiting component includes base, side pole, center pole, prefabricated center cavity, side cavity are arranged on the base, the center cavity is through connecting oil cavity and is interpenetrated with side cavity, the side pole is slidably installed in side cavity, the center pole is slidably installed in center cavity, and composite spring is arranged in side cavity and center cavity, and the side cavity, center cavity are filled with hydraulic oil.

2. Crane trolley limiting device according to claim 1, characterized in that The side end of the center cavity or the side cavity is provided with a limiting rod block.

3. The trolley position limiting device according to claim 1, characterized in that The center pole is provided with one, and the side pole is provided with two, and the side pole is arranged on both sides of the center pole.

4. The trolley position limiting device according to claim 3, characterized in that In the initial state, the side end of the center pole is closer to the crane trolley than the side end of the side pole.

5. The trolley position limiting device according to claim 1, characterized in that The limiting component is provided with a rubber buffer plate between the side column, and the both sides of the guide rail are provided with limiting wheel parts.

6. The trolley position limiting device according to claim 1, characterized in that The side end of the hoist trolley is provided with a mounting cavity, the protection component includes mounting rod, limiting spring and protection plate, one end of the mounting rod is connected with the protection plate, and one end is slidably installed in the mounting cavity, the limiting spring is nested on the surface of the mounting rod, and is installed between the protection plate and the surface of the side end of the hoist trolley.

7. Crane trolley limiter according to claim 6, characterized in that The mounting cavity is provided with a limiting opening, and the mounting rod is provided with a limiting block.

8. The trolley position limiting device according to claim 6, characterized in that The mounting cavity is filled with hydraulic oil.

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