CN212581400U

CN212581400U - Protection device and crane

Info

Publication number: CN212581400U
Application number: CN202021342793.2U
Authority: CN
Inventors: 王玉宝
Original assignee: Hunan Sany Medium Lifting Machinery Co Ltd
Current assignee: Hunan Sany Medium Lifting Machinery Co Ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2021-02-23
Anticipated expiration: 2030-07-09

Abstract

The utility model discloses a protector and hoist relates to engineering machine tool technical field. The protective device comprises a base, a connecting rod, a handle and a guardrail, wherein one end of the base is hinged with the connecting rod, the other end of the base is hinged with the guardrail, the connecting rod and the guardrail are arranged on the same side of the base, one end of the handle is hinged with the connecting rod, and the other end of the handle is hinged with the guardrail; when the guardrail is vertical to the base, the handle and the connecting rod are positioned on the same straight line, at the moment, the protective device is positioned at a dead point position, and the guardrail is in a locked state at the dead point position and does not swing any more; when the guardrail needs to be flatly placed, the four-bar mechanism can be separated from the dead point position and freely swing only by rotating the handle; the protection device can control the position and the inclination angle of the guardrail through the control handle, so that the guardrail can be erected and laid flat, and the guardrail can be automatically locked when erected. The crane with the protection device is high in safety and convenient to operate, the time of workers is effectively saved, and the safety of the workers is guaranteed.

Description

Protection device and crane

Technical Field

The utility model relates to an engineering machine tool technical field particularly, relates to a protector and hoist.

Background

The cantilever crane is a small and medium-sized hoisting device developed in recent years, has the characteristics of unique structure, safety, reliability, high efficiency, energy conservation, time and labor conservation, flexibility and the like, can be operated randomly in a three-dimensional space, and has better superiority than other conventional hoisting equipment on occasions of short distance and intensive dispatching. When a cantilever crane is used, an operator is required to work above a cantilever of the crane frequently, and the risk that the operator falls from a high position exists.

In the prior art, operating personnel are protected by installing guardrails on two sides of a crane cantilever. However, the opening and closing of the guardrail are mostly supported by the long rod and fixed by the bolts or the pins, the disassembly and assembly process is relatively troublesome, the fastening bolts or the pins are easy to fall off, and safety accidents are possibly caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a protector and hoist to among the solution prior art, the loaded down with trivial details and lower technical problem of security of guardrail installation on the hoist cantilever.

The embodiment of the utility model is realized like this:

the utility model discloses an aspect provides a protector, including base, connecting rod, handle and guardrail, the one end of base is articulated with the connecting rod, the other end is articulated with the guardrail, and connecting rod and guardrail setting are at the homonymy of base, and the one end of handle is articulated with the connecting rod, the other end is articulated with the guardrail, and when the guardrail was perpendicular with the base, handle and connecting rod were in same straight line.

The utility model discloses in the optional embodiment, above-mentioned guardrail includes guardrail body and first articulated seat, and first articulated seat is right angled triangle, and the first end of right angled triangle hypotenuse is articulated with the base, the second end is articulated with the handle, and the right angled side that right angled triangle and second end are connected is connected with the side of guardrail body.

In the optional embodiment of the present invention, the handle includes a first connecting rod and an operating rod connected to the first connecting rod at a first predetermined angle, both ends of the first connecting rod are respectively hinged to the guardrail and the connecting rod, and the operating rod and the connecting rod are located in the same plane and are disposed outside the ring frame formed by the base, the connecting rod, the first connecting rod and the guardrail together.

The utility model discloses in the optional embodiment, above-mentioned connecting rod includes the second connecting rod and is the bracing piece that the angle is connected is predetermine to the second with the second connecting rod, and the both ends of second connecting rod are articulated with handle and base respectively, and the bracing piece is located the coplanar with the handle and sets up within the ring frame that base, second connecting rod, handle and guardrail formed jointly.

The utility model discloses in the optional embodiment, above-mentioned base includes the supporting seat and sets up the articulated seat of second in supporting seat one end, and the articulated seat of second is articulated with guardrail and connecting rod respectively, and the articulated seat of second is the inclined plane with connecting rod and guardrail articulated one side, and when the guardrail was perpendicular with the base, the supporting seat was used for supporting the guardrail.

In an alternative embodiment of the present invention, the opening is disposed on the right-angle side of the first hinged seat connected to the first end, and the opening runs through two sides of the first hinged seat.

In an alternative embodiment of the present invention, the guardrail body is flush with the first hinge seat toward one side of the base.

The utility model discloses on the other hand of embodiment provides a crane, including cantilever and the protector of above-mentioned arbitrary, protector's base is connected with the cantilever, and protector's guardrail is located the top of cantilever.

The utility model discloses in the optional embodiment, above-mentioned hoist is still including setting up the couple device in the cantilever side, and the couple device is including couple body, fixed baseplate, swinging arms and control lever, and fixed baseplate's one end is articulated with the swinging arms, the other end is articulated with the couple body, and swinging arms and couple body setting are at fixed baseplate's homonymy, and the one end of control lever is articulated with the swinging arms, the other end is articulated with the couple body, and when the couple body is perpendicular with fixed baseplate, the control lever is in on the same straight line with the swinging arms.

In the optional embodiment of the present invention, the hook body includes a hinge portion and a hanging portion connected to the hinge portion, one side of the hinge portion away from the hanging portion is hinged to the fixing base and the control rod, and when the hinge portion is perpendicular to the fixing base, the hanging portion is abutted to the fixing base.

The utility model discloses beneficial effect includes:

the embodiment of the utility model provides a protective device and a crane, the protective device comprises a base, a connecting rod, a handle and a guardrail, one end of the base is hinged with the connecting rod, the other end is hinged with the guardrail, the connecting rod and the guardrail are arranged at the same side of the base, one end of the handle is hinged with the connecting rod, the other end is hinged with the guardrail, the base, the connecting rod, the handle and the guardrail jointly form a four-bar linkage; when the guardrail is vertical to the base, the handle and the connecting rod are positioned on the same straight line, at the moment, the protective device is positioned at a dead point position, and the guardrail is in a locked state at the dead point position and does not swing any more; when the guardrail needs to be flatly placed, the four-bar mechanism can be separated from the dead point position and freely swing only by rotating the handle; the protective device can control the position and the inclination angle of the guardrail through the control handle, so that the guardrail can be erected and laid flat, and the guardrail can be automatically locked during erection; the crane comprises a cantilever and a protective device, wherein the protective device is fixed on the cantilever through a base, and when the area above the cantilever needs to be protected, a handle is rotated to enable the guardrail to gradually stand until the guardrail is vertical to the base and is in a locked state; when the area above the cantilever is not required to be protected, the handle is rotated again, the protection device is separated from the dead point position, and the guardrail moves towards the cantilever until the guardrail is parallel to the cantilever and is stored above the cantilever; the safety of the crane during inspection and maintenance is high, the operation is convenient, the time of workers is effectively saved, and the safety of the workers is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a protection device according to an embodiment of the present invention;

fig. 2 is a second schematic structural view of a protection device according to an embodiment of the present invention;

fig. 3 is one of schematic structural diagrams of a hook according to an embodiment of the present invention;

fig. 4 is a second schematic structural diagram of a hook according to an embodiment of the present invention.

Icon: 100-a guard; 110-a base; 111-a support base; 112-a second articulated seat; 120-connecting rod; 121-a second connecting rod; 122-a support bar; 130-a handle; 131-a first connecting rod; 132-a lever; 140-a guardrail; 141-a guardrail body; 142-a first articulated seat; 200-a hook device; 210-a hook body; 211-a hinge; 212-a suspension; 220-a fixed base; 230-a swing lever; 240-control lever.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. The terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 is a schematic structural view of a protection device according to an embodiment of the present invention, please refer to fig. 1, which provides a protection device 100 according to an embodiment of the present invention, including a base 110, a connecting rod 120, a handle 130 and a guardrail 140, wherein one end of the base 110 is hinged to the connecting rod 120, the other end is hinged to the guardrail 140, the connecting rod 120 and the guardrail 140 are disposed at the same side of the base 110, one end of the handle 130 is hinged to the connecting rod 120, the other end is hinged to the guardrail 140, the base 110, the connecting rod 120, the handle 130 and the guardrail 140 jointly form a four-bar linkage mechanism, and rotate in the; when the guardrail 140 is perpendicular to the base 110, the handle 130 and the connecting rod 120 are in the same straight line, and at this time, the protection device 100 is in a dead point position, and the guardrail 140 is in a locked state at the dead point position and does not swing any more;

fig. 2 is a second schematic structural view of the protection device according to the embodiment of the present invention, please refer to fig. 2, when the guardrail 140 needs to be placed flat, the four-bar mechanism can be separated from the dead point position by only rotating the handle 130, and swing freely; the protection device 100 can control the position and the inclination angle of the guardrail 140 by controlling the handle 130, so as to realize the standing and the leveling of the guardrail 140 and ensure the automatic locking of the guardrail 140 during the standing.

Referring to fig. 1, when the protection is required to be performed on the upper portion of the area to be protected, the handle 130 is rotated to gradually raise the guardrail 140, and when the guardrail 140 is perpendicular to the base 110 (i.e., perpendicular to the area to be protected), the handle 130 and the connecting rod 120 are in the same straight line, and the guardrail 140 is in a locked state to protect the upper portion of the area to be protected; referring to fig. 2, when the protection is not needed above the area to be protected, the handle 130 is rotated again to separate the protection device 100 from the dead point position, and the guardrail 140 swings until being parallel to the area to be protected, so as to retract the protection device 100.

In order to prevent the guardrail 140 from further moving towards the side opposite to the retracting direction after being perpendicular to the base 110, optionally, the guardrail 140 includes a guardrail body 141 and a first hinge seat 142, the guardrail body 141 is used for protecting the region to be protected, and the first hinge seat 142 is used for being hinged with the handle 130 and the base 110, so as to control the movement of the guardrail body 141; the first hinge base 142 is a right triangle, the first end of the hypotenuse of the right triangle is hinged with the base 110, the second end is hinged with the handle 130, and the right-angle side of the right triangle connected with the second end is connected with the side surface of the guardrail body 141; the base 110, the connecting rod 120, the handle 130 and the first hinge base 142 form a four-bar linkage mechanism together, and rotate in the same plane; when the guardrail body 141 is perpendicular to the base 110, the right-angle side of the first hinge seat 142, which is not connected with the guardrail body 141, is engaged with the upper surface of the base 110, so that the first hinge seat 142 is prevented from further rotating around the base 110, and the included angle between the hinge part 211 of the base 110 and the guardrail body 141 is only 90 degrees at most; after the guardrail body 141 is perpendicular to the base 110 and the protection device 100 is located at the dead point position, the guardrail body 141 cannot further move towards the side opposite to the retracting direction even if the handle 130 is continuously operated, and the handle 130 is effectively prevented from being pressed over the dead point position through the arrangement of the guardrail 140 structure.

It should be noted that the connection mode of the guardrail body 141 and the first hinge seat 142 is not limited, and may be welding or bolt connection.

Optionally, an opening is formed on a right-angle side of the first hinge base 142 connected to the first end, and the opening penetrates through two side surfaces of the first hinge base 142; the weight of the first hinged seat 142 can be reduced when the first hinged seat 142 is attached to the upper surface of the base 110 by the aid of the opening, and accordingly operation and control of operators are facilitated.

Optionally, the side of the guardrail body 141 facing the base 110 is flush with the side of the first hinge seat 142 facing the base 110, and when the guardrail body 141 is perpendicular to the base 110, the guardrail body 141 and the first hinge seat 142 simultaneously engage with the upper surface of the base 110, further preventing the handle 130 from pressing over the dead point position.

In order to facilitate the operation and control of the protection device 100 by an operator, optionally, the handle 130 includes a first connecting rod 131 and an operating rod 132 connected to the first connecting rod 131 at a first preset angle, two ends of the first connecting rod 131 are respectively hinged to the guardrail 140 and the connecting rod 120, the operating rod 132 and the connecting rod 120 are located in the same plane and are arranged outside an annular frame formed by the base 110, the connecting rod 120, the first connecting rod 131 and the guardrail 140 together, the operator operates the handle 130 by controlling the operating rod 132, and then controls the retraction and release of the guardrail 140, which is convenient, flexible, time-saving and labor-saving in operation.

It should be noted that the value range of the first preset angle is not limited, and optionally, the first preset angle is not smaller than 45 ° and not larger than 135 °, and at this time, the space between the first connecting rod 131 and the operating rod 132 is large, so that an operator can conveniently grip the operating rod 132; if the first preset angle is too small or too large, the space between the first connecting rod 131 and the operating rod 132 is small, and the operator cannot smoothly insert his/her hand into the space between the first connecting rod 131 and the operating rod 132 and grasp the operating rod 132.

Also to avoid further movement of the guard rail 140 towards the side opposite to the retraction direction after being perpendicular to the base 110, here, another possible embodiment of the guard device 100 is given, optionally, the link 120 includes a second connecting rod 121 and a supporting rod 122 connected with the second connecting rod 121 at a second predetermined angle, both ends of the second connecting rod 121 are respectively hinged with the handle 130 and the base 110, the supporting rod 122 and the handle 130 are located in the same plane and are arranged in an annular frame formed by the base 110, the second connecting rod 121, the handle 130 and the guard rail 140 together; when the guardrail 140 is perpendicular to the base 110, the support rod 122 is attached to the upper surface of the base 110 to prevent the second connecting rod 121 from further rotating around the base 110, so that the included angle between the hinged part 211 of the base 110 and the guardrail 140 is only 90 degrees at most; after the guard rail 140 is perpendicular to the base 110 and the guard device 100 is located at the dead point position, the guard rail 140 cannot move further to the side opposite to the retracting direction even if the handle 130 is continuously operated, and the handle 130 is effectively prevented from being pressed over the dead point position through the arrangement of the structure of the connecting rod 120.

The retracting direction is a direction in which the guard rail 140 is changed from a vertical state to a horizontal state.

It should be noted that, the range of the second preset angle is not limited, and in order to prevent the handle 130 from pressing over the dead point position, when the second connecting rod 121 and the handle 130 are in the same straight line, the supporting rod 122 is just attached to the upper surface of the base 110.

Optionally, the base 110 includes a support seat 111 and a second hinge seat 112 disposed at one end of the support seat 111, the second hinge seat 112 is respectively hinged to the guard rail 140 and the connecting rod 120, one side of the second hinge seat 112 hinged to the connecting rod 120 and the guard rail 140 is an inclined surface, the inclined surface is disposed so that the connecting rod 120 can freely rotate, and interference between the base 110 and the connecting rod 120 is prevented in the process of erecting the guard rail 140, so that the guard rail 140 cannot reach a position perpendicular to the base 110; the support base 111 is used to support the guard rail 140 when the guard rail 140 is perpendicular to the base 110.

It should be noted that the inclined surface of the second hinge seat 112 is configured to enable the hinge point of the connecting rod 120 and the base 110 to be lower than the hinge point of the guardrail 140 and the base 110, so as to prevent the second hinge seat 112 and the connecting rod 120 from interfering with each other.

The embodiment also provides a crane, which comprises a cantilever and the protection device 100 of any one of the above parts, wherein the base 110 of the protection device 100 is connected with the cantilever, and the guardrail 140 of the protection device 100 is positioned above the cantilever; when the area above the cantilever needs to be protected, the handle 130 of the protection device 100 is rotated to gradually raise the guardrail 140 of the protection device 100 until the guardrail 140 is vertical to the base 110 and is in a locked state; when the area above the cantilever is not required to be protected, the handle 130 is rotated again to enable the protection device 100 to be separated from the dead point position, and the guardrail 140 moves towards the cantilever until the guardrail is parallel to the cantilever and is stored above the cantilever; the safety of the crane during inspection and maintenance is high, the operation is convenient, the time of workers is effectively saved, and the safety of the workers is ensured.

The protection devices 100 can be arranged on two sides of the cantilever side by side to realize long-distance protection on two sides of the cantilever, so that when an operator walks on the cantilever, the operator is always in a protection range, and the safety of the operator is guaranteed.

Fig. 3 is one of schematic structural diagrams of a hook provided in an embodiment of the present invention, referring to fig. 3, optionally, the crane further includes a hook device 200 disposed on a side surface of the cantilever, and the hook device 200 is used for hanging a hanging plate of the crane; the hook device 200 comprises a hook body 210, a fixed base 220, a swing rod 230 and a control rod 240, wherein one end of the fixed base 220 is hinged to the swing rod 230, the other end of the fixed base 220 is hinged to the hook body 210, the swing rod 230 and the hook body 210 are arranged on the same side of the fixed base 220, one end of the control rod 240 is hinged to the swing rod 230, the other end of the control rod 240 is hinged to the hook body 210, and when the hook body 210 is perpendicular to the fixed base 220, the control rod 240 and the swing rod 230 are on the same straight line.

The working principle of the hook device 200 is the same as that of the protective device 100, and the hook body 210, the fixed base 220, the swing rod 230 and the control rod 240 form a four-bar linkage mechanism together and rotate in the same plane; referring to fig. 3, when the hook body 210 is perpendicular to the fixed base 220, the control rod 240 and the swing rod 230 are in the same line, and at this time, the hook device 200 is at the dead point position, and the hook body 210 is in the locked state at the dead point position and does not swing any more; fig. 4 is a second schematic structural view of the hook according to the embodiment of the present invention, please refer to fig. 4, when the hook body 210 needs to be placed flat, the four-bar mechanism can be separated from the dead point position by rotating the control rod 240, and swing freely; the hook device 200 can control the position and the inclination angle of the hook body 210 through the control rod 240, so that the hook body 210 can be erected and laid flat, and the hook body 210 can be automatically locked when erected.

The hook device 200 is fixed on the side surface of the cantilever, when the hook device 200 is required to hang a hanging plate of a crane, the control rod 240 is rotated to enable the hook body 210 to gradually stand up, when the hook body 210 is vertical to the fixed base 220 (namely vertical to the side surface of the cantilever), the control rod 240 and the swing rod 230 are in the same straight line, and the hook body 210 is in a locked state; when the hook device 200 is not needed to hang the hanging plate of the crane, the control rod 240 is rotated again to enable the hook to be separated from the dead point position, and the hook body 210 swings until being parallel to the side face of the cantilever, so that the hook device 200 is retracted.

In order to prevent the hook body 210 from further moving toward the side opposite to the retracting direction after being perpendicular to the fixed base 220, optionally, the hook body 210 includes a hinge portion 211 and a hanging portion 212 connected to the hinge portion 211, and one side of the hinge portion 211, which is far away from the hanging portion 212, is hinged to the fixed base 220 and the control rod 240, respectively, referring to fig. 3, when the hinge portion 211 is perpendicular to the fixed base 220, the hanging portion 212 abuts against the fixed base 220, and the hinge portion 211 is prevented from further rotating around the fixed base 220, so that the included angle between the fixed base 220 and the hinge portion 211 can only be 90 ° at most; after the hinge portion 211 is perpendicular to the fixed base 220 and the hook device 200 is located at the dead point position, the suspension portion 212 cannot be further moved toward the side opposite to the retracting direction even if the control lever 240 is continuously operated, and the control lever 240 is effectively prevented from being pressed over the dead point position by the structure of the hook body 210.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a protection device, its characterized in that, includes base, connecting rod, handle and guardrail, the one end of base with the connecting rod is articulated, the other end with the guardrail is articulated, the connecting rod with the guardrail sets up the homonymy of base, the one end of handle with the connecting rod is articulated, the other end with the guardrail is articulated, works as the guardrail with when the base is perpendicular, the handle with the connecting rod is in on the same straight line.

2. The guard device of claim 1, wherein the guardrail includes a guardrail body and a first hinged seat, the first hinged seat is a right triangle, a first end of a hypotenuse of the right triangle is hinged to the base, a second end of the hypotenuse is hinged to the handle, and a right-angled side of the right triangle connected to the second end is connected to a side of the guardrail body.

3. The guard of claim 1, wherein the handle includes a first connecting rod and an operating rod connected to the first connecting rod at a first predetermined angle, the first connecting rod is hinged to the guard rail and the connecting rod at two ends, and the operating rod and the connecting rod are located in the same plane and are disposed outside an annular frame formed by the base, the connecting rod, the first connecting rod and the guard rail together.

4. The guard of claim 1, wherein the linkage includes a second link and a support rod connected to the second link at a second predetermined angle, the second link is hinged at two ends to the handle and the base, and the support rod and the handle are located in the same plane and are disposed within an annular frame formed by the base, the second link, the handle and the guard rail.

5. The guard device according to claim 1, wherein the base includes a support base and a second hinge base provided at one end of the support base, the second hinge base is respectively hinged to the guard rail and the connecting rod, and a side of the second hinge base hinged to the connecting rod and the guard rail is a slope, and when the guard rail is perpendicular to the base, the support base is used for supporting the guard rail.

6. The shielding device of claim 2, wherein the right-angle edge of the first hinged seat connected to the first end is provided with an opening, and the opening penetrates through two side surfaces of the first hinged seat.

7. Guard means according to claim 2 characterised in that the side of the guard rail body facing the base is flush with the side of the first hinge mount facing the base.

8. A crane comprising a jib and a guard according to any of claims 1 to 7, the base of the guard being connected to the jib and the guard rail of the guard being located above the jib.

9. The crane according to claim 8, further comprising a hook device disposed on a side surface of the cantilever, wherein the hook device comprises a hook body, a fixed base, a swinging rod and a control rod, one end of the fixed base is hinged to the swinging rod, the other end of the fixed base is hinged to the hook body, the swinging rod and the hook body are disposed on the same side of the fixed base, one end of the control rod is hinged to the swinging rod, the other end of the control rod is hinged to the hook body, and when the hook body is perpendicular to the fixed base, the control rod and the swinging rod are in the same straight line.

10. The crane according to claim 9, wherein the hook body comprises a hinge portion and a suspension portion connected to the hinge portion, a side of the hinge portion remote from the suspension portion being hinged to the fixed base and the control rod, respectively, the suspension portion resting on the fixed base when the hinge portion is perpendicular to the fixed base.