Protective fence for balance arm of tower crane

Abstract

The utility model discloses a protective fence for a balance arm of a tower crane, relates to the technical field of tower cranes, and solves the technical problem of lower safety of the balance arm of the tower crane in the prior art. The protective fence for the balance arm of the tower crane comprises two transverse rods, and the two transverse rods are arranged in a spaced mode and are horizontally arranged; the two ends of the vertical rod are installed on the two transverse rods respectively; the number of the external connecting parts is four, and the four external connecting parts are fixedly installed at the two ends of the two transverse rods correspondingly and used for externally connecting the transverse rods to an external object. Through the structure, the protective guard for the balance arm of the tower crane is mounted on the balance arm of the tower crane, so that the protective guard for the balance arm of the tower crane is positioned behind the balancing weight on the outermost side, and the part provided with the balancing weight is separated from the part not provided with the balancing weight; according to the protective guard for the balance arm of the tower crane, safety accidents caused by the fact that workers step into the hollowed-out positions during inspection or operation are avoided, and therefore the safety of the balance arm of the tower crane is improved through the protective guard for the balance arm of the tower crane.

Description

Technical Field

[0001] The utility model belongs to the technical field of tower cranes, and in particular relates to a tower crane balance arm guardrail. Background Art

[0002] Tower crane, also known as tower crane, originated in Western Europe. It is a rotating crane with a boom mounted on the top of a tall tower. It has a large working space and is mainly used for vertical and horizontal transportation of materials and installation of building components in house construction. It consists of three parts: metal structure, working mechanism and electrical system. The metal structure includes tower body, boom and base, etc. The working mechanism has four parts: lifting, luffing, rotation and travel. The electrical system includes motors, controllers, distribution cabinets, connecting lines, signals and lighting devices, etc.

[0003] During the use of tower cranes, the length of the boom will be selected according to the project conditions. In some projects, due to the influence of the surrounding environment, the boom cannot be fully installed and needs to be cut off. However, after the boom is cut off, the counterweight installed at the rear end of the balance arm also needs to be reduced accordingly. At this time, the position where the counterweight is installed on the balance arm will be hollowed out. Therefore, there are safety hazards when personnel inspect it, which will directly affect personnel safety. Utility Model Content

[0004] The utility model provides a tower crane balance arm guardrail, which is used to solve the technical problem of low safety of the tower crane balance arm in the prior art.

[0005] The utility model is realized through the following technical solutions:

[0006] A tower crane balance arm guardrail, comprising:

[0007] There are two cross bars, which are arranged at intervals and horizontally;

[0008] A vertical rod, both ends of which are respectively mounted on the two cross rods, and the vertical rod and the cross rod are arranged perpendicular to each other;

[0009] There are four external connection parts, which are respectively fixedly mounted on the two ends of the two cross bars, and are used to connect the cross bars to external objects.

[0010] Furthermore, the crossbar comprises:

[0011] a first connecting rod;

[0012] There are two first sliding rods, which are slidably mounted on two ends of the first connecting rod respectively;

[0013] The first positioning member is installed between the first sliding rod and the first connecting rod, and the first positioning member is used to fix the position of the first sliding rod.

[0014] Furthermore, the first positioning member is a pin.

[0015] Furthermore, the vertical rod comprises:

[0016] A second connecting rod, one end of which is fixedly mounted on any of the cross bars;

[0017] A second sliding rod, one end of which is fixedly mounted on the other cross rod, and the other end of the second connecting rod is slidably plugged into the other end of the second sliding rod;

[0018] The second positioning member is installed between the second connecting rod and the second sliding rod, and the second positioning member is used to fix the position of the second sliding rod.

[0019] Furthermore, the second positioning member is a pin.

[0020] Furthermore, there are multiple vertical rods, and the multiple vertical rods are installed between the two horizontal rods.

[0021] Furthermore, the external connection part includes:

[0022] There are two connecting blocks, one end of each of the two connecting blocks is mounted on the same end of the cross bar, and the two connecting blocks are spaced apart;

[0023] Bolt, a first threaded hole and a second threaded hole are respectively opened on the two connecting blocks, and the axes of the first threaded hole and the second threaded hole are located on the same straight line, and the bolt is screwed in the first threaded hole and the second threaded hole.

[0024] Furthermore, there are multiple first threaded holes and multiple second threaded holes, and the multiple first threaded holes and multiple second threaded holes are evenly distributed on the two connecting blocks, and the multiple first threaded holes and multiple second threaded holes are arranged in a one-to-one correspondence.

[0025] Furthermore, the cross bar and the vertical bar are both structural members made of Q235B material.

[0026] Furthermore, the horizontal rod and the vertical rod are coated with a yellow and black paint layer.

[0027] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0028] The tower crane balance arm guardrail provided by the utility model comprises a crossbar, a vertical bar and an external connection part, wherein the number of the crossbars is two, the two crossbars are arranged at intervals, and the two crossbars are arranged horizontally, the two ends of the vertical bar are respectively installed on the crossbars, and the vertical bar and the crossbar are arranged perpendicular to each other, the number of the external connection parts is four, and the four external connection parts are respectively fixedly installed at the two ends of the two crossbars, and the external connection part is used to connect the crossbar to an external object. Through the above structure, after the tower crane arm is cut and the balance arm reduces the corresponding counterweight block, the tower crane balance arm guardrail provided by the utility model is installed on the tower crane balance arm through the external connection part, so that the tower crane balance arm guardrail is located after the outermost counterweight block, and the part with the counterweight block installed is separated from the part without the counterweight block installed, so as to avoid the staff from stepping into the hollow part during inspection or operation and causing safety accidents, and the setting of the external connection part makes the tower crane balance arm guardrail provided by the utility model easier to install or disassemble, so that the setting of the tower crane balance arm guardrail provided by the utility model improves the safety of the tower crane balance arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0030] Figure 1 A schematic structural diagram of a tower crane balance arm guardrail provided in an embodiment of the utility model.

[0031] Marks and corresponding parts names in the attached drawings:

[0032] 1-cross bar, 11-first connecting rod, 12-first sliding rod, 13-first positioning member, 2-vertical rod, 21-second connecting rod, 22-second sliding rod, 23-second positioning member, 3-external connecting part, 31-connecting block, 32-bolt. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0034] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component.

[0035] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] Example:

[0038] This embodiment provides a tower crane balance arm guardrail, which is used to solve the technical problem of low safety of tower crane balance arms in the prior art. The tower crane balance arm guardrail includes a horizontal bar 1, a vertical bar 2 and an external connection part 3, wherein:

[0039] There are two cross bars 1 , which are spaced apart and arranged horizontally.

[0040] Both ends of the vertical rod 2 are respectively installed on the two cross rods 1, and the vertical rod 2 and the cross rod 1 are arranged perpendicular to each other. It can be understood that the two cross rods 1 and the vertical rod 2 are arranged in an I-shape. It should be noted that the vertical rod 2 can be connected to the two cross rods 1 by welding, bonding or hot melting.

[0041] There are four external connecting parts 3, which are respectively fixedly mounted at the two ends of the two cross bars 1. The external connecting parts 3 are used to connect the cross bars 1 to external objects. The arrangement of the external connecting parts 3 facilitates the disassembly and assembly of the cross bars 1.

[0042] Through the above structure, after the tower crane arm is cut and the corresponding counterweight blocks are reduced in the counterweight arm, the tower crane counterweight arm guardrail provided by the utility model is installed on the tower crane counterweight arm through the external connecting part 3, so that the tower crane counterweight arm guardrail is located behind the outermost counterweight block, and the part with the counterweight block is separated from the part without the counterweight block, so as to avoid safety accidents caused by workers stepping into the hollow part during inspection or operation, and the setting of the external connecting part 3 makes the tower crane counterweight arm guardrail provided by the utility model easier to install or disassemble. Therefore, the setting of the tower crane counterweight arm guardrail provided by the utility model improves the safety of the tower crane counterweight arm.

[0043] An optional implementation of this embodiment is as follows: the crossbar 1 includes a first connecting rod 11, a first sliding rod 12 and a first positioning member 13, wherein:

[0044] The first connecting rod 11 is a rod body with a square cross section.

[0045] There are two first sliding bars 12, and the two first sliding bars 12 are respectively slidably inserted at the two ends of the first connecting bar 11. In this way, through the setting of the two slidably installed first sliding bars 12, the two first sliding bars 12 can slide outside the first connecting bar 11, so as to adjust the distance between the two sliding bars to increase or shorten the length of the cross bar 1 to adapt to balance arms of different sizes, which is more practical.

[0046] The first positioning member 13 is installed between the first slide bar 12 and the first connecting rod 11. The first positioning member 13 is used to fix the position of the first slide bar 12. In this way, by setting the first positioning member 13, the distance between the two slide bars is fixed, making it more convenient to use.

[0047] Optionally, the first positioning member 13 is a pin shaft. Specifically, a plurality of first through holes are provided at one end of the first slide rod 12. The plurality of first through holes are evenly distributed on the first slide rod 12 along the length direction of the first slide rod 12, and the first through holes pass through the front end and the rear end of the first slide rod 12. Second through holes are provided at both ends of the first connecting rod 11, so that the axis of any first through hole and the axis of the second through hole are on the same straight line, and the pin shaft is then inserted into the first through hole and the second through hole to achieve the purpose of fixing the first slide rod 12.

[0048] An optional implementation of this embodiment is as follows: the vertical rod 2 includes a second connecting rod 21, a second sliding rod 22 and a second positioning member 23, wherein:

[0049] One end of the second connecting rod 21 is fixedly mounted on any cross bar 1 .

[0050] One end of the second slide bar 22 is fixedly mounted on the other cross bar 1, and the other end of the second connecting rod 21 is slidably inserted into the other end of the second slide bar 22. In this way, the two cross bars 1 are connected and fixed by the setting of the second connecting rod 21 and the second slide bar 22, and the distance between the second slide bar 22 and the second connecting rod 21 can be adjusted by the slidingly installed second slide bar 22, thereby adjusting the distance between the two cross bars 1 to adapt to balance arms of different sizes.

[0051] The second positioning member 23 is installed between the second connecting rod 21 and the second slide rod 22. The second positioning member 23 is used to fix the position of the second slide rod 22. In this way, the distance between the second slide rod 22 and the second connecting rod 21 is fixed by the setting of the second positioning member 23, making it more convenient to use.

[0052] Optionally, the second positioning member 23 is a pin.

[0053] Optionally, there are multiple vertical rods 2, and the multiple vertical rods 2 are installed between the two cross rods 1. In this way, the connection between the two cross rods 1 is more firmly established through the arrangement of the multiple vertical rods 2. At the same time, the more densely packed vertical rods 2 reduce the gap between two adjacent vertical rods 2, further reducing the probability of accidents.

[0054] An optional implementation of this embodiment is as follows: the external connection part 3 includes a connection block 31 and a bolt 32, wherein:

[0055] There are two connecting blocks 31 , one end of each of the two connecting blocks 31 is mounted on the same end of the crossbar 1 , and the two connecting blocks 31 are spaced apart.

[0056] A first threaded hole and a second threaded hole are respectively formed on the two connection blocks 31 , and the axes of the first threaded hole and the second threaded hole are located on the same straight line. The bolts 32 are screwed into the first threaded hole and the second threaded hole.

[0057] Through the above structure, when the tower crane balance arm guardrail provided by the embodiment of the utility model needs to be installed on the balance arm, the balance arm is first clamped between the two connecting blocks 31, and then the bolts 32 are screwed into the first threaded hole and the second threaded hole, which is convenient and quick.

[0058] Optionally, there are multiple first threaded holes and multiple second threaded holes, and the multiple first threaded holes and the multiple second threaded holes are evenly distributed on the two connecting blocks 31, and the multiple first threaded holes and the multiple second threaded holes are arranged one by one. In this way, by setting the multiple first threaded holes and the second threaded holes, the balance arms of different sizes can be adapted.

[0059] An optional implementation of this embodiment is as follows: the crossbar 1 and the vertical bar 2 are both structural members made of Q235B material, and Q235B has good toughness and castability.

[0060] Optionally, both the horizontal bar 1 and the vertical bar 2 are coated with a yellow and black paint layer, so that the eye-catching paint layer allows the staff to see the hollow in front more clearly during maintenance, reminding the staff not to pass.

[0061] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A tower crane balance arm guardrail, characterized in that: include: There are two cross bars (1), the two cross bars (1) are arranged at intervals, and the two cross bars (1) are arranged horizontally; A vertical rod (2), both ends of which are respectively mounted on the two cross rods (1), and the vertical rod (2) and the cross rod (1) are arranged perpendicular to each other; There are four external connection parts (3), which are respectively fixedly mounted on the two ends of the two cross bars (1), and the external connection parts (3) are used to connect the cross bars (1) to an external object; The crossbar (1) comprises: A first connecting rod (11); Two first sliding rods (12), the two first sliding rods (12) are slidably mounted on two ends of the first connecting rod (11) respectively; A first positioning member (13) is installed between the first sliding rod (12) and the first connecting rod (11), and the first positioning member (13) is used to fix the position of the first sliding rod (12).

2. A tower crane balance arm guardrail according to claim 1, characterized in that: The first positioning member (13) is a pin.

3. The tower crane balance arm guardrail according to claim 1, characterized in that: The vertical rod (2) comprises: A second connecting rod (21), one end of which is fixedly mounted on any one of the cross bars (1); A second sliding rod (22), one end of which is fixedly mounted on the other cross rod (1), and the other end of the second connecting rod (21) is slidably plugged into the other end of the second sliding rod (22); The second positioning member (23) is installed between the second connecting rod (21) and the second sliding rod (22), and the second positioning member (23) is used to fix the position of the second sliding rod (22).

4. A tower crane balance arm guardrail according to claim 3, characterized in that: The second positioning member (23) is a pin.

5. A tower crane balance arm guardrail according to claim 4, characterized in that: There are multiple vertical rods (2), and each of the multiple vertical rods (2) is installed between two horizontal rods (1).

6. The tower crane balance arm guardrail according to claim 1, characterized in that: The external connection part (3) comprises: There are two connecting blocks (31), one end of each of the two connecting blocks (31) is mounted on the same end of the crossbar (1), and the two connecting blocks (31) are spaced apart; The bolt (32) is provided with a first threaded hole and a second threaded hole respectively on the two connecting blocks (31), and the axes of the first threaded hole and the second threaded hole are located on the same straight line, and the bolt (32) is screwed into the first threaded hole and the second threaded hole.

7. A tower crane balance arm guardrail according to claim 6, characterized in that: The number of the first threaded holes and the second threaded holes is multiple, the multiple first threaded holes and the multiple second threaded holes are evenly distributed on the two connecting blocks (31), and the multiple first threaded holes and the multiple second threaded holes are arranged in a one-to-one correspondence.

8. A tower crane balance arm guardrail according to any one of claims 1 to 7, characterized in that: The cross bar (1) and the vertical bar (2) are both structural parts made of Q235B material.

9. A tower crane balance arm guardrail according to any one of claims 1 to 7, characterized in that: The horizontal rod (1) and the vertical rod (2) are both coated with yellow and black paint layers.

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