Safety protection device of crane

Abstract

The utility model provides a safety protection device for a crane. The safety protection device comprises a lifting bracket, a hoisting mechanism, two protection mechanisms, a lifting hook and a follow-up mechanism, the safety protection device has the beneficial effects that the possibility of accidents can be effectively reduced, falling heavy-load goods can be buffered and protected, the safety of workers and equipment can be guaranteed, and the practicability is high.

Description

Technical Field

[0001] The utility model belongs to the field of crane protection, in particular to a crane safety protection device. Background Art

[0002] A crane is a mechanical device used for lifting and transporting heavy objects. Currently, most cranes are horizontally mounted above workshops, warehouses and material yards to lift and transport materials. Because its two ends are located on tall concrete columns or metal brackets, it is shaped like a bridge. A bridge crane is a device used to carry heavy objects in industry and construction sites. It usually consists of a bridge, a lifting machinery and an electrical control system, which can move in the horizontal direction and can lift and lower heavy objects. At present, the safety protection devices of bridge cranes in the prior art are mostly used to improve the stability of the cargo lifting process and reduce the risk of cargo falling off the hook. However, it is impossible to completely avoid that cargo falls off the hook. After a long period of use, the hook equipment of the crane (the hook bolt is loose or the traction rope is broken, etc.) may cause safety hazards to the equipment, and it is impossible to buffer and protect the heavy-loaded cargo that falls off, and it is impossible to ensure the safety of the staff and equipment. Utility Model Content

[0003] In view of this, the utility model aims to propose a crane safety protection device to solve the problems in the prior art that the hook equipment may have safety hazards, cannot cushion and protect the falling heavy loads, and cannot ensure the safety of workers and equipment.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A crane safety protection device comprises a lifting bracket, a lifting mechanism, two protection mechanisms, a hook and a follow-up mechanism, wherein the lifting bracket comprises two support frames and a transverse frame, the lifting mechanism is installed on the surface of the transverse frame, the hook is installed at the bottom of the lifting mechanism, the hook is installed in the follow-up mechanism, both ends of the follow-up mechanism are respectively installed on the two support frames, a support frame is symmetrically installed at both ends of the bottom of the transverse frame, a protection mechanism is installed on each support frame, and the two protection mechanisms are also symmetrically arranged.

[0006] Furthermore, the support frame includes two support legs and several support platforms. The two support legs are arranged in parallel. The tops of the two support legs are installed to one end of the bottom of the transverse frame. The two support legs are connected by support platforms arranged in parallel up and down. A lifting mechanism is also installed on the support platform.

[0007] Furthermore, the support frame includes two support legs, a plurality of support platforms and two counterweight rods. The two support legs are arranged in parallel. The tops of the two support legs are installed to one end of the bottom of the transverse frame. The two support legs are connected by support platforms arranged in parallel up and down. The lifting mechanism is installed on the support platforms, and a counterweight rod is also installed on both sides of the bottom of the lifting mechanism.

[0008] Furthermore, the cross frame includes a cross frame body and two mounting frames. The cross frame body is a hollow rectangular structure. A support frame is installed at each of the two ends of the bottom of the cross frame body, and a mounting frame is symmetrically installed on the top of the cross frame body. The interior of the cross frame body and the mounting frames are connected to the lifting mechanism, and a hook is installed at the bottom of the lifting mechanism through the cross frame body.

[0009] Furthermore, the lifting mechanism includes a transverse moving component, a vertical moving component and a longitudinal moving component. The transverse moving component is installed inside the cross frame body, the top of the transverse moving component is connected to the vertical moving component, one side of the vertical moving component is connected to the longitudinal moving component, and a hook is installed at the bottom of the longitudinal moving component.

[0010] Furthermore, the transverse movement component includes a transverse drive motor, a transverse chain transmission component and two transverse slide rails. The transverse drive motor is installed at one end inside the transverse frame body. The output shaft of the transverse drive motor is transmission-connected to the transverse chain transmission component. The transverse chain transmission component is installed at one side inside the transverse frame body. The two transverse slide rails are symmetrically installed in two mounting frames, and the bottom of the vertical movement component is respectively connected to the transverse chain transmission component and the two transverse slide rails.

[0011] Furthermore, the vertical moving assembly includes a vertical support frame, the two ends of the bottom of the vertical support frame are respectively slidably arranged with two horizontal slide rails, and one end of the bottom of the vertical support frame is also connected to the horizontal chain transmission assembly, and one side of the vertical support frame is slidably connected to the longitudinal moving assembly.

[0012] Furthermore, the longitudinal moving component includes a longitudinal support beam, a longitudinal driving source and a longitudinal sliding frame, the longitudinal support beam is installed on both sides of the horizontal frame body, the longitudinal driving source is installed in the middle of the longitudinal support beam, the longitudinal sliding frame is installed at the bottom of the longitudinal driving source, one side of the longitudinal sliding frame is slidably set with the vertical support frame, and a hook is installed at the bottom of the longitudinal sliding frame.

[0013] Furthermore, the protection mechanism includes a protection motor, a protection screw and a protection plate. The bottom of the protection screw is installed on a support platform, one side of the protection screw is connected to the protection motor, and the screw nut of the protection screw is installed to the bottom of the protection plate through a mounting platform.

[0014] Compared with the prior art, the crane safety protection device described in the utility model has the following advantages:

[0015] The crane safety protection device described in the utility model can effectively reduce the possibility of accidents, can buffer and protect the fallen heavy-loaded goods, can ensure the safety of workers and equipment, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of the embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection between the lifting bracket and the lifting mechanism according to an embodiment of the utility model;

[0019] Figure 3 for Figure 2 A magnified view of middle;

[0020] Figure 4 This is a schematic diagram of the protection mechanism described in an embodiment of the utility model.

[0021] Description of reference numerals:

[0022] 1. Lifting bracket; 11. Support frame; 111. Support leg; 112. Support platform; 113. Counterweight rod; 12. Horizontal frame; 121. Horizontal frame body; 122. Mounting frame; 2. Lifting mechanism; 21. Horizontal moving assembly; 211. Horizontal drive motor; 212. Horizontal chain transmission assembly; 213. Horizontal slide rail; 22. Vertical moving assembly; 221. Vertical support frame; 23. Longitudinal moving assembly; 231. Longitudinal support beam; 232. Longitudinal drive source; 233. Longitudinal sliding frame; 3. Protection mechanism; 31. Protection motor; 32. Protection screw; 33. Protection plate; 4. Hook; 5. Follow-up mechanism; 51. Follow-up frame; 52. Follow-up slide rail. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0024] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0027] like Figures 1 to 4 As shown, the crane safety protection device includes a lifting bracket 1, a lifting mechanism 2, two protection mechanisms 3, a hook 4 and a follower mechanism 5. The lifting bracket 1 includes two support frames 11 and a transverse frame 12. The lifting mechanism 2 is installed on the surface of the transverse frame 12. The hook 4 is installed at the bottom of the lifting mechanism 2. The hook 4 is installed in the follower mechanism 5. The two ends of the follower mechanism 5 are respectively installed on the two support frames 11. A support frame 11 is symmetrically installed at the two ends of the bottom of the transverse frame 12. A protection mechanism 3 is installed on each support frame 11. The two protection mechanisms 3 are also symmetrically arranged. In this embodiment, the lifting bracket 1, the lifting mechanism 2, and the hook 4 can form a bridge crane, and can also be replaced by an existing bridge crane. This crane safety protection device can effectively reduce the possibility of accidents, can buffer and protect the heavy-loaded cargo that falls off, can ensure the safety of workers and equipment, and has strong practicality.

[0028] In a preferred embodiment of the utility model, the support frame 11 includes two support legs 111 and a plurality of support platforms 112. The two support legs 111 are arranged in parallel. The tops of the two support legs 111 are both installed to one end of the bottom of the horizontal frame 12. The two support legs 111 are connected by the support platforms 112 arranged in parallel up and down. The support platform 112 is also installed with a lifting mechanism 2. In actual use, the number of the support platforms 112 is not less than one. The purpose of the support platform 112 is twofold. One is to connect the two support legs 111, and the other is to place the lifting mechanism 2. The shape of the support platform 112 is not limited. It can be a long strip structure or a platform structure. As long as it can serve the purpose of connecting the support legs 111 and supporting the lifting mechanism 2. In this embodiment, the number of the support platforms 112 is two. The upper support platform 112 is used to place and fix the lifting mechanism 2, and the lower support platform 112 is used to connect the two support legs 111.

[0029] In a preferred embodiment of the utility model, the support frame 11 includes two support legs 111, a plurality of support platforms 112 and two counterweight rods 113. The two support legs 111 are arranged in parallel, and the tops of the two support legs 111 are installed to one end of the bottom of the transverse frame 12. The two support legs 111 are connected by support platforms 112 arranged in parallel up and down. The lifting mechanism 2 is installed on the support platforms 112, and a counterweight rod 113 is installed on both sides of the bottom of the lifting mechanism 2. In actual use, the purpose of the counterweight rod 113 is to counterweight and support the lifting mechanism 2.

[0030] In a preferred embodiment of the utility model, the transverse frame 12 includes a transverse frame body 121 and two mounting frames 122. The transverse frame body 121 is a hollow rectangular structure. A support frame 11 is respectively installed at both ends of the bottom of the transverse frame body 121, and a mounting frame 122 is symmetrically installed on the top of the transverse frame body 121. The interior of the transverse frame body 121 and the mounting frame 122 are both connected to the lifting mechanism 2. The bottom of the lifting mechanism 2 passes through the transverse frame body 121 to install the hook 4. In this embodiment, the mounting frame 122 is a rectangular strip structure with a makeshift groove. The mounting frame 122 is used to place the transverse slide rail 213 of the lifting mechanism 2 and provide a makeshift space for the vertical moving component 22.

[0031] In a preferred embodiment of the utility model, the lifting mechanism 2 includes a lateral moving component 21, a vertical moving component 22 and a longitudinal moving component 23, the lateral moving component 21 is installed inside the cross frame body 121, the upper part of the lateral moving component 21 is connected to the vertical moving component 22, one side of the vertical moving component 22 is connected to the longitudinal moving component 23, and a hook 4 is installed at the bottom of the longitudinal moving component 23. In actual use, the staff can adjust the positions of the lateral moving component 21, the vertical moving component 22 and the longitudinal moving component 23 by operating the control panel of the controller (which can be an existing PLC or STM32 series single-chip microcomputer) so as to lift the goods through the hook 4.

[0032] In a preferred embodiment of the utility model, the transverse moving component 21 includes a transverse driving motor 211, a transverse chain transmission component 212 and two transverse slide rails 213. The transverse driving motor 211 is installed to one end of the interior of the cross frame body 121. The output shaft of the transverse driving motor 211 is connected to the transverse chain transmission component 212. The transverse chain transmission component 212 is installed to one side of the interior of the cross frame body 121. The two transverse slide rails 213 are symmetrically installed in two mounting frames 122. The bottom of the vertical moving component 22 is connected to the transverse chain transmission component 212 and the two transverse slide rails 223 respectively. In this embodiment, the transverse drive motor 211 can be an existing servo motor, and the transverse chain transmission assembly 212 can be composed of an existing chain and a sprocket. In actual use, when the output shaft of the transverse drive motor 211 rotates, it drives the active sprocket of the transverse chain transmission assembly 212 to rotate, and the rotation of the active sprocket of the transverse chain transmission assembly 212 drives the chain of the transverse chain transmission assembly 212 to rotate. Since the chain of the transverse chain transmission assembly 212 is connected to the bottom of the vertical moving assembly 22, the rotation of the chain of the transverse chain transmission assembly 212 can drive the vertical moving assembly 22 to move horizontally forward and backward along the two transverse slide rails 213.

[0033] In a preferred embodiment of the utility model, the vertical moving component 22 includes a vertical support frame 221, and the two ends of the bottom of the vertical support frame 221 are respectively slidably set with two horizontal slide rails 223, and one end of the bottom of the vertical support frame 221 is also connected to the horizontal chain transmission component 222. One side of the vertical support frame 221 is slidably connected to the longitudinal moving component 23. In this embodiment, the longitudinal moving component 23 can slide vertically on the vertical support plate 221.

[0034] In a preferred embodiment of the utility model, the longitudinal moving component 23 includes a longitudinal support beam 231, a longitudinal driving source 232 and a longitudinal sliding frame 233. The longitudinal support beam 231 is installed on both sides of the cross frame body 121, the longitudinal driving source 232 is installed in the middle of the longitudinal support beam 231, and the longitudinal sliding frame 233 is installed at the bottom of the longitudinal driving source 232. One side of the longitudinal sliding frame 233 is slidably set with the vertical support frame 221, and a hook 4 is installed at the bottom of the longitudinal sliding frame 233. In actual use, the longitudinal driving source 232 can be an existing cylinder, and the telescopic rod at the bottom of the longitudinal driving source 232 is connected to the longitudinal sliding frame 233. The longitudinal driving source 232 can drive one side of the longitudinal sliding frame 233 to slide up and down along the vertical sliding plate 222.

[0035] In a preferred embodiment of the utility model, the protection mechanism 3 includes a protection motor 31, a protection screw 32 and a protection plate 33. The bottom of the protection screw 32 is mounted on the support platform 112, one side of the protection screw 32 is connected to the protection motor 31, and the screw nut of the protection screw 32 is mounted to the bottom of the protection plate 33 through the mounting platform. In this embodiment, the protection plate 33 can be a shovel-shaped structure with a folded edge. In actual use, the protection motor 31 and the protection screw 32 are both prior art. The output shaft of the protection motor 31 can drive the screw nut of the protection screw 32 to move forward and backward. The forward and backward movement of the screw nut of the protection screw 32 can drive the protection plate 33 to move forward and backward, thereby protecting the goods hoisted by the hook 4 and buffering and protecting the goods from falling off.

[0036] In a preferred embodiment of the utility model, the following mechanism 5 includes a following frame 51, a following rail 52 and a following seat. The following frame 51 is a hollow rectangular parallelepiped structure. The two ends of the following frame 51 are respectively slidably connected to two following rails 52. The following rails 52 are installed on the supporting legs 111. The middle part of the following frame 51 is slidably installed on the following seat. The hook 4 is installed in the following seat, which is intended to improve the safety of the crane cargo following. In actual use, the following frame 51 moves in the horizontal and longitudinal directions with the hook 4, and the following seat can be slidably arranged in the following frame 51. The following seat can be a rectangular parallelepiped or round structure with a clearance channel in the middle.

[0037] Working principle of crane safety protection device:

[0038] When it is necessary to lift the goods (in the initial state, the protective plate 33 of the protective mechanism 3 is in a tightened state and will not affect the lifting of the goods by the hook 4), the staff adjusts the position of the hook 4 by controlling the lifting mechanism 2, and then lifts the goods on the hook 4 (at the same time, when the hook 4 carries the goods, the follower frame 51 moves with the hook 4 during longitudinal and transverse movements, thereby playing a role in protecting the safety of the goods). After the hook 4 lifts the goods, the staff can control the protective motor 31 to move the two protective plates 33 to the middle of the transverse frame 12, so as to protect the goods lifted by the hook 4 and provide buffering and protection when the goods fall off.

[0039] It should be noted that the present application does not improve the control program, and the control program and electrical components involved in the present application are all prior art.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Crane safety protection device, characterized by: The invention comprises a lifting bracket (1), a lifting mechanism (2), two protective mechanisms (3), a hook (4) and a follower mechanism (5); the lifting bracket (1) comprises two support frames (11) and a transverse frame (12); the lifting mechanism (2) is installed on the surface of the transverse frame (12); the hook (4) is installed on the bottom of the lifting mechanism (2); the hook (4) is installed in the follower mechanism (5); the two ends of the follower mechanism (5) are respectively installed on the two support frames (11); the two ends of the bottom of the transverse frame (12) are respectively symmetrically installed with a support frame (11); each support frame (11) is respectively installed with a protective mechanism (3); and the two protective mechanisms (3) are also symmetrically arranged; The support frame (11) comprises two support legs (111) and a plurality of support platforms (112); the two support legs (111) are arranged in parallel, the tops of the two support legs (111) are mounted to one end of the bottom of the transverse frame (12), the two support legs (111) are connected via a support platform (112) arranged in parallel up and down, and a lifting mechanism (2) is also mounted on the support platform (112); The support frame (11) comprises two support legs (111), a plurality of support platforms (112) and two counterweight rods (113); the two support legs (111) are arranged in parallel, the tops of the two support legs (111) are mounted to one end of the bottom of the transverse frame (12), the two support legs (111) are connected via a support platform (112) arranged in parallel up and down, the lifting mechanism (2) is mounted on the support platform (112), and a counterweight rod (113) is mounted on both sides of the bottom of the lifting mechanism (2); The protection mechanism (3) comprises a protection motor (31), a protection lead screw (32) and a protection plate (33); the bottom of the protection lead screw (32) is mounted on a support platform (112); one side of the protection lead screw (32) is connected to the protection motor (31); and the lead screw nut of the protection lead screw (32) is mounted to the bottom of the protection plate (33) via a mounting platform; The follower mechanism (5) comprises a follower frame (51), a follower slide rail (52) and a follower seat, the follower frame (51) is a hollow rectangular parallelepiped structure, two ends of the follower frame (51) are respectively slidably connected to two follower slide rails (52), the follower slide rails (52) are mounted on the supporting legs (111), the middle part of the follower frame (51) is slidably mounted on the follower seat, and a hook (4) is installed in the follower seat; When it is necessary to lift the cargo, in the initial state, the protective plate (33) of the protective mechanism (3) is in a contracted state and does not affect the lifting of the cargo by the hook (4). The staff adjusts the position of the hook (4) by controlling the lifting mechanism (2), and then lifts the cargo on the hook (4). At the same time, when the hook (4) carries the cargo, the follower frame (51) moves with the hook (4) to protect the cargo when it moves longitudinally and transversely. After the hook (4) lifts the cargo, the staff controls the protective motor (31) to move the two protective plates (33) toward the middle of the transverse frame (12), thereby protecting the cargo lifted by the hook (4) and providing a buffer and protection when the cargo falls off.

2. The crane safety protection device according to claim 1 is characterized in that: The transverse frame (12) comprises a transverse frame body (121) and two mounting frames (122); the transverse frame body (121) is a hollow rectangular parallelepiped structure; a support frame (11) is respectively mounted at both ends of the bottom of the transverse frame body (121); a mounting frame (122) is symmetrically mounted on the top of the transverse frame body (121); the interior of the transverse frame body (121) and the mounting frames (122) are both connected to a lifting mechanism (2); and a lifting hook (4) is mounted on the bottom of the lifting mechanism (2) through the transverse frame body (121).

3. The crane safety protection device according to claim 2 is characterized in that: The lifting mechanism (2) comprises a transverse moving component (21), a vertical moving component (22) and a longitudinal moving component (23); the transverse moving component (21) is installed inside the cross frame body (121); the top of the transverse moving component (21) is connected to the vertical moving component (22); one side of the vertical moving component (22) is connected to the longitudinal moving component (23); and a hook (4) is installed at the bottom of the longitudinal moving component (23).

4. The crane safety protection device according to claim 3 is characterized in that: The transverse moving assembly (21) comprises a transverse driving motor (211), a transverse chain transmission assembly (212) and two transverse slide rails (213); the transverse driving motor (211) is mounted to one end inside the transverse frame body (121); the output shaft of the transverse driving motor (211) is in transmission connection with the transverse chain transmission assembly (212); the transverse chain transmission assembly (212) is mounted to one side inside the transverse frame body (121); the two transverse slide rails (213) are symmetrically mounted in two mounting frames (122) respectively; and the bottom of the vertical moving assembly (22) is respectively connected to the transverse chain transmission assembly (212) and the two transverse slide rails (213).

5. The crane safety protection device according to claim 4 is characterized in that: The vertical moving assembly (22) comprises a vertical support frame (221), the two ends of the bottom of the vertical support frame (221) are respectively slidably arranged with two transverse slide rails (213), and one end of the bottom of the vertical support frame (221) is also connected to the transverse chain transmission assembly (212), and one side of the vertical support frame (221) is slidably connected to the longitudinal moving assembly (23).

6. The crane safety protection device according to claim 4 is characterized in that: The longitudinal moving assembly (23) comprises a longitudinal support beam (231), a longitudinal driving source (232) and a longitudinal sliding frame (233); the longitudinal support beam (231) is mounted on both sides of the horizontal frame body (121); the longitudinal driving source (232) is mounted in the middle of the longitudinal support beam (231); the longitudinal sliding frame (233) is mounted at the bottom of the longitudinal driving source (232); one side of the longitudinal sliding frame (233) is slidably arranged with the vertical support frame (221); and a hook (4) is mounted at the bottom of the longitudinal sliding frame (233).

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