Heavy hammer device, heavy hammer limiting system and crane

Abstract

The utility model relates to the technical field of hoisting equipment, and provides a heavy hammer device, a heavy hammer limiting system and a crane, the heavy hammer device comprises a heavy hammer piece, a heavy hammer parent piece and a second transmission assembly, and the upper end of the heavy hammer piece is connected with a connecting piece; the heavy hammer parent part comprises a body and a first transmission assembly, the body is in sliding fit with the heavy hammer part, and the first transmission assembly is arranged at the top of the body; the second transmission assembly penetrates through the first transmission assembly and the heavy hammer part through one side of the first transmission assembly, and the body is suitable for driving the heavy hammer part to synchronously move upwards under cooperation of the first transmission assembly and the second transmission assembly. According to the heavy hammer device provided by the embodiment of the utility model, through the matching between the first transmission assembly and the second transmission assembly, synchronous upward movement of the heavy hammer part and the heavy hammer mother part can be ensured, and the spring buckle connected to the upper end of the heavy hammer part can be prevented from being extruded between the heavy hammer part and the heavy hammer mother part; the problem that the anti-falling failure is generated after the spring buckle is extruded and deformed can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, in particular to a weight device, a weight limiting system and a crane. Background Art

[0002] When the crane is working, it is necessary to use a weight device to limit the lifting height of the hook to a certain extent to avoid collision between the hook and the boom. When the crane changes its working condition, the weight device needs to be disassembled and reassembled. The weight device mainly includes a weight mother component and a weight sub-component, and the two are generally prevented from falling off by a spring buckle. However, during operation, the weight mother component is pushed by the hook and is prone to relative movement with the weight sub-component, thereby squeezing the spring buckle. After being squeezed, the spring buckle is easily deformed, resulting in anti-slip failure, which in turn causes the weight mother component and the weight sub-component to fall off by mistake, so that the weight device cannot be used normally. Utility Model Content

[0003] The first aspect of the embodiment of the utility model provides a weight device to solve the defect of spring buckle anti-slip failure in the prior art. Through the cooperation between the first transmission assembly and the second transmission assembly, the synchronous upward movement of the weight hammer component and the weight hammer mother component can be guaranteed. The spring buckle connected to the upper end of the weight hammer component can be free from being squeezed between the weight hammer component and the weight hammer mother component, which can solve the problem of anti-slip failure caused by the spring buckle being squeezed and deformed.

[0004] A second aspect of the embodiments of the present utility model provides a weight limiting system.

[0005] A third aspect of the embodiments of the utility model provides a crane.

[0006] The first aspect of the present invention provides a heavy hammer device, comprising:

[0007] A heavy hammer component, the upper end of which is connected to the connecting component;

[0008] The weight hammer mother component comprises a body and a first transmission assembly, the body and the weight hammer sub-component are slidably matched, and the first transmission assembly is arranged on the top of the body;

[0009] The second transmission assembly passes through the first transmission assembly and the heavy hammer component through one side of the first transmission assembly. Under the cooperation of the first transmission assembly and the second transmission assembly, the main body is suitable for driving the heavy hammer component to move upward synchronously.

[0010] According to the weight device provided in the embodiment of the utility model, when the main body is pushed upward by the hook, the first transmission assembly is suitable for abutting against the second transmission assembly, and the first transmission assembly is used to drive the second transmission assembly to move upward synchronously.

[0011] According to the weight device provided in an embodiment of the utility model, one end of the second transmission assembly is arranged on the first transmission assembly on one side of the weight component, and the other end of the second transmission assembly is arranged on the first transmission assembly on the other side of the weight component.

[0012] According to the weight device provided in an embodiment of the utility model, the first transmission assembly includes a first transmission member and a second transmission member, the first transmission member and the second transmission member are fixedly arranged on the top of the main body, and are symmetrically arranged on the opposite sides of the weight member; the second transmission assembly passes through the first transmission member, the weight member and the second transmission member in sequence.

[0013] According to the weight device provided in the embodiment of the utility model, the second transmission assembly includes a transmission rod and a stopper, the transmission rod sequentially passes through the first transmission member, the weight member and the second transmission member, and at least one end of the transmission rod is provided with the stopper;

[0014] When the stop member is arranged at one end of the transmission rod, the second transmission assembly also includes a stop boss arranged at the other end of the transmission rod, and the stop member and the stop boss are used to limit the transmission rod from sliding out of the first transmission member, the second transmission member and the heavy hammer member.

[0015] According to the weight device provided by the embodiment of the utility model, the stopper comprises at least one of a nut, a pin pin and a cotter pin.

[0016] According to the weight hammer device provided in the embodiment of the utility model, the body is provided with an opening side, and a slide groove is provided in the opening side;

[0017] A sliding block is arranged on the weight component at a position corresponding to the sliding groove, and the body is suitable for slidingly cooperating with the weight component through the sliding groove and the sliding block.

[0018] A second aspect of the embodiment of the utility model provides a weight limit system, comprising a height limiter, a controller and a weight device as described in any one of the above embodiments;

[0019] The weight device is suspended on the wire rope and slidably cooperates with the wire rope, and the weight device is located above the hook;

[0020] The height limiter is located above the weight device, and the height limiter is connected to the weight device through a connecting piece, and the height limiter is used to monitor the position information of the weight device;

[0021] The controller is electrically connected to the height limiter, and the controller issues a control command based on the position information of the weight device.

[0022] According to the weight limit system provided by the embodiment of the utility model, the height limiter includes a connecting rope, a travel switch and a reset spring, one end of the connecting rope is connected to the connecting piece, and the other end is connected to the reset spring, the travel switch is arranged on the connecting rope, and the travel switch is suitable for switching between a first state and a second state according to the displacement change of the connecting rope.

[0023] The crane provided in the third aspect of the embodiment of the utility model comprises a vehicle body and the weight limiting system described in the aforementioned embodiment, wherein the weight limiting system is arranged on the vehicle body.

[0024] The weight device provided by the embodiment of the utility model is provided with a first transmission assembly on the body of the weight mother component, and the second transmission assembly is passed through the weight sub-component, and the cooperation between the second transmission assembly and the first transmission assembly can make the weight mother component drive the weight sub-component to move up synchronously, thereby avoiding the problem of accidental detachment between the weight sub-component and the weight mother component. Compared with the prior art, the weight device provided by the embodiment of the utility model is provided with a first transmission assembly and a second transmission assembly, so that when the weight mother component is pushed by the hook, the weight sub-component and the weight mother component can be guaranteed to move up synchronously, thereby avoiding the relative displacement between the weight sub-component and the weight mother component, so that the spring buckle connected to the upper end of the weight sub-component can be exempted from being squeezed between the weight sub-component and the weight mother component, thereby solving the problem of anti-detachment failure caused by the spring buckle being squeezed and deformed, reducing the problem of accidental detachment between the weight sub-component and the weight mother component, and improving the safety and stability of the weight device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a structural schematic diagram of a heavy hammer limiting system provided in an embodiment of the utility model;

[0027] Figure 2 It is a schematic diagram of the overall structure of the weight hammer device provided in the embodiment of the utility model;

[0028] Figure 3 It is a structural schematic diagram of a heavy hammer component provided in an embodiment of the utility model;

[0029] Figure 4 It is a structural schematic diagram of a weight hammer mother component provided in an embodiment of the utility model;

[0030] Figure 5 It is a schematic diagram of the working process of the heavy hammer limiting system provided by the embodiment of the utility model;

[0031] Figure 6 It is a structural schematic diagram of a height limiter provided in an embodiment of the utility model;

[0032] Figure 7 It is a structural schematic diagram of a connecting piece provided by an embodiment of the utility model;

[0033] Figure 8 It is a schematic diagram of the overall structure of a crane provided by an embodiment of the utility model.

[0034] Reference numerals:

[0035] 10: vehicle body; 20: weight limit system; 30: wire rope; 40: boom; 50: hook; 21: weight device; 22: height limiter; 23: connecting rope; 24: travel switch; 25: connecting piece; 100: weight sub-piece; 200: weight mother piece; 210: body; 220: first transmission assembly; 221: first transmission member; 222: second transmission member; 300: second transmission assembly; 310: transmission rod; 320: stop member. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0038] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0040] Figure 1 It is a structural schematic diagram of a heavy hammer limiting system provided in an embodiment of the utility model; Figure 2 It is a schematic diagram of the overall structure of the weight hammer device provided in the embodiment of the utility model; Figure 3 It is a structural schematic diagram of a heavy hammer component provided in an embodiment of the utility model; Figure 4 It is a structural schematic diagram of a weight mother component provided by an embodiment of the utility model.

[0041] See also Figures 1 to 4 The first aspect of the utility model provides a weight device 21, which includes a weight component 100, a weight mother component 200 and a second transmission assembly 300. The upper end of the weight component 100 is provided with a connecting hole, and the weight component 100 can be connected to the connecting component 25 through the connecting hole. In use, the weight component 100 is suitable for being suspended on the wire rope 30 through the connecting component 25; the weight mother component 200 includes a main body 210 and a first transmission assembly 220, the main body 210 is suspended on the weight component 100, and the main body 210 and the weight component 100 are slidably matched, and the first transmission assembly 220 is arranged on the main body 210.

[0042] The second transmission assembly 300 is passed through the weight component 100 and is located below the connecting member 25. In other words, the second transmission assembly 300 is located below the connecting hole. Through the cooperation between the first transmission assembly 220 and the second transmission assembly 300, the weight mother component 200 can drive the weight component 100 to move upward synchronously.

[0043] Specifically, see Figures 2 to 4 The weight mother component 200 provided in the embodiment of the utility model is a tubular component, and an opening is provided on one side of the weight mother component 200, namely the opening side. During assembly, the weight component 100 can be inserted into the opening to form an integrated structure with the weight mother component 200; a slide groove is provided on the side wall of the opening, and a slider corresponding to the slide groove is provided on the side wall of the weight component 100. During assembly, the slider can be inserted into the slide groove from the lower end of the slide groove, and then the weight component 100 can be pushed upward until it reaches a suitable position.

[0044] In an optional embodiment of the present invention, a limiting protrusion can be set at the upper end of the opening side wall toward the direction of the opening. When the shoulder of the weight hammer component 100 abuts against the limiting protrusion, the movement of the weight hammer component 100 can be limited by the limiting protrusion to prevent the weight hammer component 100 from sliding out of the weight hammer mother component 200. In addition, the weight hammer component 100 can drive the weight hammer mother component 200 to move upward synchronously through the limiting protrusion. In other words, the weight hammer mother component 200 can be suspended on the shoulder of the weight hammer component 100 through the limiting protrusion.

[0045] It is easy to understand that when the weight device 21 is assembled with the crane wire rope 30, the weight component 100 is separated from the weight mother component 200, and the weight mother component 200 can be quickly put on the wire rope 30 or removed from the wire rope 30 through the aforementioned opening side.

[0046] Continue reading Figure 2 It can be understood that the weight device 21 provided in the embodiment of the utility model is provided with a first transmission assembly 220 on the main body 210 of the weight mother component 200, and the second transmission assembly 300 is passed through the weight component 100. Through the cooperation between the second transmission assembly 300 and the first transmission assembly 220, the weight mother component 200 can drive the weight component 100 to move up synchronously, thereby avoiding the problem of accidental detachment between the weight component 100 and the weight mother component 200.

[0047] Compared with the prior art, the weight device 21 provided in the embodiment of the utility model, through the cooperation between the first transmission component 220 and the second transmission component 300, can ensure the synchronous upward movement of the weight component 100 and the weight mother component 200 when the weight mother component 200 is pushed by the hook 50, and avoid relative displacement between the weight component 100 and the weight mother component 200. In this way, the spring buckle connected to the upper end of the weight component 100 can be free from being squeezed between the weight component 100 and the weight mother component 200, thereby solving the problem of anti-slip failure caused by the spring buckle being squeezed and deformed, reducing the problem of accidental slip between the weight component 100 and the weight mother component 200, and improving the safety and stability of the weight device 21.

[0048] Continue reading Figure 2 In an optional embodiment of the utility model, the first transmission assembly 220 is arranged on the upper end surface of the main body 210, and the first transmission assembly 220 is suitable for abutting against the second transmission assembly 300. In this way, when the weight mother component 200 is pushed up by the hook 50, the first transmission assembly 220 can drive the second transmission assembly 300 to move up synchronously, thereby realizing that the weight mother component 200 drives the weight sub-component 100 to move up synchronously.

[0049] In an optional embodiment of the utility model, different from the above-mentioned embodiment, the first transmission member 221 can be arranged on the side wall of the main body 210. The first transmission member 221 can specifically be a protrusion protruding from the side wall of the main body 210. The second transmission assembly 300 is passed through the side wall of the heavy hammer member 100 and is located above the protrusion. It can be understood that when the main body 210 is pushed by the hook 50 and moves upward, the protrusion can abut against the second transmission assembly 300, thereby driving the heavy hammer member 100 to move upward synchronously.

[0050] Continue reading Figure 2 In an optional embodiment of the present utility model, one end of the second transmission assembly 300 is arranged on the first transmission assembly 220 on one side of the heavy hammer member 100, and the other end of the second transmission assembly 300 is arranged on the first transmission assembly 220 on the other side of the heavy hammer member 100. It can be understood that when the body 210 is pushed upward by the hook 50, the first transmission assemblies 220 on both sides of the heavy hammer member 100 can respectively abut against the two ends of the second transmission assembly 300 and push the second transmission assembly 300 to move upward synchronously. In this way, the stability of the second transmission assembly 300 can be improved, so that the force on both sides of the heavy hammer member 100 is more uniform. It should be noted here that the first transmission assembly 220 can be formed by the upper surface of the shoulder of the body 210, or a boss can be set on the upper surface of the body 210. Specifically, it can be adaptively set according to actual conditions.

[0051] In an optional embodiment of the utility model, the first transmission assembly 220 may be provided only on the second transmission assembly 300 on one side of the weight member 100. In this case, the second transmission assembly 300 needs to be fixedly connected to the weight member 100 to prevent the second transmission assembly 300 from being separated from the weight member 100 under the push of the first transmission assembly 220. The fixed connection may be by clamping, threading or bonding, etc., and may be adaptively set according to actual conditions.

[0052] Continue reading Figures 2 to 4 In an optional embodiment of the present invention, the first transmission assembly 220 includes a first transmission member 221 and a second transmission member 222. The first transmission member 221 is disposed on the body 210 on one side of the heavy hammer member 100, and the second transmission member 222 is disposed on the body 210 on the other side of the heavy hammer member 100. The second transmission assembly 300 sequentially passes through the first transmission member 221, the heavy hammer member 100 and the second transmission member 222. It can be understood that the movement of the second transmission assembly 300 along the length direction of the heavy hammer member 100 can be limited by the first transmission member 221 and the second transmission member 222. In other words, the first transmission member 221 and the second transmission member 222 can be used to limit the movement of the second transmission assembly 300 along the length direction of the heavy hammer member 100. The cooperation between the moving part 221 and the second transmission part 222 and the second transmission assembly 300 can make the weight hammer component 100 and the weight hammer mother component 200 move synchronously; in this case, the limiting protrusion in the aforementioned embodiment can be omitted, and the second transmission assembly 300 can be restricted by the first transmission part 221 and the second transmission part 222. When the weight hammer component 100 moves upward, the movement of the weight hammer component 100 can be restricted to prevent the weight hammer component 100 from slipping out of the weight hammer mother component 200. In other words, the weight hammer mother component 200 can be suspended on the weight hammer component 100 through the first transmission part 221 and the second transmission part 222.

[0053] The first transmission member 221 and the second transmission member 222 can be formed by a boss protruding from the surface of the main body 210, or can be obtained by setting an external member, such as an external clamping ring or a clamping sleeve. In the embodiment of the utility model, a boss with a through hole is taken as an example for illustration and description.

[0054] Continue reading Figure 2 In an optional embodiment of the utility model, the second transmission assembly 300 includes a stopper 320 and a transmission rod 310. The transmission rod 310 is sequentially passed through the first transmission member 221, the heavy hammer member 100 and the second transmission member 222. At least one end of the transmission rod 310 is provided with a stopper 320, that is, the transmission rod 310 can be provided with a stopper 320 at only one end, or the transmission rod 310 can be provided with stoppers 320 at both ends.

[0055] When the stop member 320 is arranged at one end of the transmission rod 310, the second transmission assembly 300 also includes a stop boss arranged at the other end of the transmission rod 310. It can be understood that through the abutment between the stop member 320 and the stop boss and the adjacent first transmission member 221 and the second transmission member 222, the transmission rod 310 can be restricted from sliding out of the first transmission member 221, the second transmission member 222 and the heavy hammer member 100. In this way, the stability of the second transmission assembly 300 can be improved, and the problem of accidental detachment between the heavy hammer member 100 and the heavy hammer mother member 200 due to the transmission rod 310 sliding out during use can be avoided.

[0056] In an optional embodiment of the utility model, the stopper 320 includes at least one of a nut, a pin and a cotter pin. Specifically, when the stopper 320 is only provided at one end of the transmission rod 310, the stopper 320 can be selected from any one of the pin, nut and cotter pin. When the stopper 320 is provided at both ends of the transmission rod 310, the stopper 320 at both ends of the transmission rod 310 can be both pins, or both nuts, or both cotter pins, or one side can be a pin pin and the other side can be a nut, etc. Specifically, it can be adaptively selected according to actual conditions. It can be understood that the pin, nut and cotter pin are easy to obtain, have low manufacturing costs, and are easy to assemble with the transmission rod 310. In this way, the manufacturing difficulty and manufacturing cost of the second transmission assembly 300 can be reduced.

[0057] In an optional embodiment of the utility model, different from the aforementioned embodiment, the stopper 320 can be omitted in the embodiment of the utility model. In the present embodiment, at least one of the first transmission member 221 and the second transmission member 222 is fixedly connected to the second transmission assembly 300. The fixed connection method can be a method of mutual clamping between a buckle and a slot, or a method of threaded connection. For example, a threaded hole is provided on any one of the first transmission member 221 and the second transmission member 222, and an external thread is provided on the corresponding end of the second transmission assembly 300, that is, the corresponding end of the aforementioned transmission rod 310. The fixed connection between the first transmission member 221 or the second transmission member 222 and the second transmission assembly 300 is achieved by fastening internal and external threads. There are many ways to fix the connection, and it can also be a fastening connection achieved by fasteners such as screws or bolts, or a bonding achieved by an adhesive. Specifically, the embodiments of the utility model are not listed one by one here, and can be adaptively set according to actual conditions.

[0058] It can be understood that in the embodiment of the utility model, by making at least one of the first transmission member 221 and the second transmission member 222 fixedly connected to the second transmission assembly 300, it is possible to prevent the second transmission assembly 300 from slipping out of the first transmission member 221, the second transmission member 222 and the weight member 100. In this way, the stability of the second transmission assembly 300 can be improved, and the problem of accidental detachment between the weight member 100 and the weight mother member 200 due to slipping out of the second transmission assembly 300 during use can be avoided.

[0059] The second aspect of the utility model provides a weight limit system 20, which includes a height limiter 22, a controller (not shown in the figure) and a weight device 21 in any of the aforementioned embodiments, wherein the weight device 21 is suspended on a steel wire rope 30 and slidingly cooperates with the steel wire rope 30, and the weight device 21 is located above the hook 50; the height limiter 22 is provided on the boom 40 and is located above the weight device 21, and the height limiter 22 is connected to the weight device 21 through a connector 25, and the height limiter 22 is used to monitor the position information of the weight device 21, and the controller is electrically connected to the height limiter, and the controller can issue a control command based on the position information of the weight device 21. Specifically, taking the installation of the weight limit system 20 on a crane as an example, the controller can be further connected to the hoisting device of the crane, and the hoisting device can change its own operating state or maintain the current state based on the control command. For example, when the hoisting device receives the control command from the controller, the hoisting device can change from the operating state to the stop working state, that is, stop winding or releasing the wire rope 30. The hoisting device can also change from the non-operating state to the operating state, that is, start winding or releasing the wire rope 30. The hoisting device can also continue to maintain the current working state. Specifically, it can be adaptively set according to actual conditions.

[0060] Figure 5 It is a schematic diagram of the working process of the heavy hammer limiting system provided in the embodiment of the utility model.

[0061] See also Figure 5 Taking a crane as an example, it can be understood that by arranging a weight device 21 above the hook 50, when the hook 50 rises and contacts the weight device 21, the weight device 21 can be driven to rise, and the height limiter 22 can monitor the position information of the weight through the connecting piece 25. It can be understood that at this time, the position information of the weight device 21 is equal to the position information of the hook 50. After the controller obtains the position information of the weight, it can send corresponding control information according to the preset command, so as to stop the hoisting equipment from retracting the wire rope 30 in time, thereby avoiding the hook 50 from rising too high and colliding with the boom 40, thereby improving the safety of the crane.

[0062] Figure 6It is a structural schematic diagram of a height limiter provided in an embodiment of the utility model.

[0063] See also Figure 6 In an optional embodiment of the utility model, the height limiter 22 includes a connecting rope 23, a travel switch 24 and a reset spring. One end of the connecting rope 23 is connected to the connecting piece 25, and the other end of the connecting rope 23 is connected to the reset spring. The travel switch 24 is arranged on the connecting rope 23. Specifically, the gravity of the weight device 21 will generate a downward pulling force on the connecting piece 25, and the pulling force will be transmitted to the connecting rope 23, and then transmitted to the reset spring. The reset spring will be deformed. When the weight device 21 is abutted by the hook 50, the pulling force on the reset spring disappears, and the reset spring The connecting rope 23 can be driven to reset so as to return to the position before the reset spring is deformed. The travel switch 24 is arranged on the connecting rope 23. It can be understood that in the process of the position change of the connecting rope 23, the switch can be switched between the first state and the second state based on the position change of the connecting rope 23. The first state is the state in which the travel switch 24 is disconnected, and the second state is the state in which the travel switch 24 is normally open. By switching between the first state and the second state, the travel switch 24 can send a corresponding electrical signal to characterize the position information of the heavy hammer device 21. It should be noted here that the switching of the travel switch 24 between the first state and the second state can be when the connecting rope 23 starts to reset, or after the connecting rope 23 is completely reset. Specifically, it can be adaptively selected according to actual conditions.

[0064] Figure 7 It is a schematic diagram of the structure of the connecting piece provided in an embodiment of the utility model.

[0065] See also Figure 7 In an optional embodiment of the utility model, the connecting member 25 includes an iron chain and a spring buckle, and a spring buckle is respectively provided at both ends of the connecting member 25. It can be understood that the spring buckle is easy to connect, which can improve the assembly efficiency of the connecting member 25, the heavy hammer device 21 and the connecting rope 23, thereby improving the installation efficiency of the overall device.

[0066] Figure 8 It is a schematic diagram of the overall structure of a crane provided by an embodiment of the utility model.

[0067] See also Figure 8A third aspect of an embodiment of the utility model provides a crane, the crane comprising a vehicle body 10 and a weight limiting system 20 as described in any one of the aforementioned embodiments, the weight limiting system 20 being arranged on the vehicle body 10, since the crane provided by this embodiment comprises the weight limiting system 20 and the weight device 21 as described in any one of the aforementioned embodiments, the crane provided by this embodiment also has the beneficial effects of the weight limiting system 20 and the weight device 21 in the aforementioned embodiments, the specific beneficial effects can be referred to the foregoing description, and the embodiments of the utility model will not be repeated here.

[0068] It should be noted that the technical solutions in various embodiments of the present utility model can be combined with each other, but the basis for the mutual combination is that it can be implemented by ordinary technicians in the field; when the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist, that is, it does not belong to the protection scope of the present utility model.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A heavy hammer device, characterized in that: include: A heavy hammer component (100), the upper end of which is connected to a connecting component (25); The weight mother component (200) comprises a body (210) and a first transmission assembly (220), wherein the body (210) is slidably matched with the weight sub-component (100), and the first transmission assembly (220) is arranged on the top of the body (210); The second transmission assembly (300) passes through the first transmission assembly (220) and the heavy hammer component (100) via one side of the first transmission assembly (220). With the cooperation of the first transmission assembly (220) and the second transmission assembly (300), the main body (210) is suitable for driving the heavy hammer component (100) to move upward synchronously.

2. The heavy hammer device according to claim 1, characterized in that: When the body (210) is pushed upward by the hook (50), the first transmission assembly (220) is suitable for abutting against the second transmission assembly (300), and the first transmission assembly (220) is used to drive the second transmission assembly (300) to move upward synchronously.

3. The heavy hammer device according to claim 2, characterized in that: One end of the second transmission assembly (300) is arranged on the first transmission assembly (220) on one side of the heavy hammer component (100), and the other end of the second transmission assembly (300) is arranged on the first transmission assembly (220) on the other side of the heavy hammer component (100).

4. The heavy hammer device according to claim 3, characterized in that: The first transmission assembly (220) comprises a first transmission member (221) and a second transmission member (222); the first transmission member (221) and the second transmission member (222) are fixedly arranged on the top of the body (210) and symmetrically arranged on two opposite sides of the heavy hammer member (100); the second transmission assembly (300) is sequentially passed through the first transmission member (221), the heavy hammer member (100) and the second transmission member (222).

5. The weight device according to claim 4, characterized in that: The second transmission assembly (300) comprises a transmission rod (310) and a stopper (320), wherein the transmission rod (310) passes through the first transmission member (221), the heavy hammer member (100) and the second transmission member (222) in sequence, and the stopper (320) is provided at at least one end of the transmission rod (310); When the stop member (320) is arranged at one end of the transmission rod (310), the second transmission assembly (300) further includes a stop boss arranged at the other end of the transmission rod (310), and the stop member (320) and the stop boss are used to limit the transmission rod (310) from sliding out of the first transmission member (221), the second transmission member (222) and the heavy hammer member (100).

6. The weight device according to claim 5, characterized in that: The stopper (320) includes at least one of a nut, a pin, and a split pin.

7. The weight device according to any one of claims 1 to 6, characterized in that: The body (210) is provided with an open side, and a slide groove is provided in the open side; A sliding block is provided on the weight component (100) at a position corresponding to the sliding groove, and the body (210) is suitable for slidingly cooperating with the weight component (100) through the sliding groove and the sliding block.

8. A heavy hammer limit system, characterized in that: It comprises a height limiter (22), a controller and a weight device (21) according to any one of claims 1 to 7; The weight device (21) is suspended from the steel wire rope (30) and is slidably matched with the steel wire rope (30), and the weight device (21) is located above the hook (50); The height limiter (22) is located above the weight device (21), the height limiter (22) is connected to the weight device (21) via a connecting piece (25), and the height limiter (22) is used to monitor the position information of the weight device (21); The controller is electrically connected to the height limiter (22), and the controller issues a control command based on the position information of the weight device (21).

9. The weight limiting system according to claim 8, characterized in that: The height limiter (22) comprises a connecting rope (23), a travel switch (24) and a return spring. One end of the connecting rope (23) is connected to the connecting member (25), and the other end is connected to the return spring. The travel switch (24) is arranged on the connecting rope (23). The travel switch (24) is suitable for switching between a first state and a second state according to a displacement change of the connecting rope (23).

10. A crane, characterized in that: It comprises a vehicle body (10) and a weight limiting system (20) as claimed in claim 8 or 9, wherein the weight limiting system (20) is arranged on the vehicle body (10).

Images