Folding safety guardrail for crane

Abstract

The utility model discloses a folding type safety guardrail for a crane, and relates to the technical field of crane equipment, in particular to a folding type safety guardrail for a crane, which comprises a base, a stand column and a cross rod, grooves are arranged on two sides of the base, one side of the base is movably connected with the stand column through a rotating shaft, a first sliding groove is arranged on one side of the stand column, and a second sliding groove is arranged on the other side of the stand column. A sliding block is slidably connected into the first sliding groove, a handle is fixedly connected to the upper surface of the cross rod, two through holes are formed in the upper surface of the cross rod, second sliding grooves are formed in the two sides of the cross rod, sliding blocks are slidably connected into the second sliding grooves, third sliding grooves are formed in the upper surfaces of the sliding blocks, and elastic jacking mechanisms are movably connected to the third sliding grooves. Through the arrangement of the lifting mechanism, the folding safety guardrail for the crane has a folding effect, through the matched arrangement of the stand columns and the cross rods, the situation that the guardrail is damaged due to collision during operation in a narrow space is avoided, the operation that the guardrail needs to be assembled and disassembled is reduced, and operation is easy and safe.

Description

Technical Field

[0001] The utility model relates to the technical field related to crane equipment, in particular to a foldable safety guardrail for a crane. Background Art

[0002] A crane is a multi-action lifting machine that can lift heavy objects vertically and carry them horizontally within a certain range. It is also called a crane. The main features of a tire crane are: its driving cab and the operating cab are combined into one, and it is evolved from a crawler crane (crawler crane). The crawler and traveling bracket parts of the traveling mechanism are transformed into a chassis with tires, which overcomes the disadvantage of crawler cranes (crawler cranes) that the crawler plates damage the road surface. It is a material handling machinery. The guardrail installed on the outside of the crane platform is a device that plays a protective role during the maintenance and repair of the crane. However, traditional cranes are limited by site and space, and it is difficult to install this type of safety guardrail, and it is easy to touch the railing during operation and cause damage, which leads to major safety hazards in the crane, and it needs to be improved. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a foldable safety guardrail for a crane, which solves the problems raised in the above-mentioned background technology.

[0005] (II) Technical solution

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a foldable safety guardrail for a crane, comprising a base, a column and a cross bar, grooves are provided on both sides of the base, one side of the base is movably connected to the column through a rotating shaft, a pin hole is provided on one side of the column, a first slide groove is provided on the other side of the column, a slider is slidably connected inside the first slide groove, a handle is fixedly connected to the upper surface of the cross bar, two through holes are provided on the upper surface of the cross bar, second slide grooves are provided on both sides of the cross bar, a slider is slidably connected inside the second slide groove A block, a third slide groove is provided on the upper surface of the slider, the third slide groove is movably connected with a pop-up mechanism, the second slide groove is internally movably connected with an ejection mechanism, a first through hole is provided on the upper surface of the column, a pressing mechanism is movably connected inside the through hole, a second through hole is provided on one side of the column, a reset mechanism is movably connected inside the through hole, a lifting mechanism is movably connected to the lower part of the cross bar, a groove is provided on the upper surface of the base, the lifting mechanism is movably connected to the inner side wall of the groove, a pin hole is provided on the inner side wall of the groove, and a stop pin is inserted in the pin hole.

[0007] Optionally, the ejection mechanism includes an ejection block and a first spring, the inner bottom wall of the third slide groove is fixedly connected to the first spring, the top of the first spring is fixedly connected to the ejection block, and the ejection block is slidably connected to the third slide groove.

[0008] Optionally, the ejection mechanism includes a first push plate and a second spring, the inner side wall of the second slide groove is fixedly connected to the second spring, one side of the second spring is fixedly connected to the first push plate, and the first push plate is slidably connected to the second slide groove.

[0009] Optionally, the pressing mechanism includes a first push rod, a fixed block, a third spring, a push block and a fourth slide groove, the first push rod is slidably connected to the first through hole, a fourth slide groove is provided at the bottom of the first through hole, the inner top wall of the fourth slide groove is fixedly connected to the fixed block, the lower surface of the fixed block is fixedly connected to the third spring, the first push rod is slidably connected to the inside of the fixed block, the bottom of the first push rod is fixedly connected to the push block, the upper surface of the push block is fixedly connected to the third spring, and the push block is slidably connected to the fourth slide groove.

[0010] Optionally, the reset mechanism includes a second push rod, a fixed plate, a second push plate and a fourth spring, the second push rod is slidably connected to the second through hole, the inner side wall of the first slide groove is fixedly connected to the fixed plate, one side of the fixed plate is fixedly connected to the fourth spring, a through hole is opened on one side of the fixed plate, the inside of the through hole is slidably connected to the second push rod, the second push rod is sleeved with a fourth spring, one side of the second push rod is fixedly connected to the second push plate, the side of the second push plate close to the second push rod is fixedly connected to the fourth spring, and the second push plate is slidably connected to the first slide groove.

[0011] Optionally, the lifting mechanism includes a first connecting rod and a second connecting rod, the first connecting rod has two first connecting rods, and the front side of the first connecting rod is provided with four through holes, and the four through holes are arranged in a rectangular array, the second connecting rod has four second connecting rods, and the front side of the second connecting rod is provided with three through holes, the first connecting rod is hinged to the second connecting rod through a rotating shaft, one end of the first connecting rod is movably connected to a cross rod, and the other end of the first connecting rod is movably connected to a base.

[0012] (III) Beneficial effects

[0013] The utility model provides a foldable safety guardrail for a crane, which has the following beneficial effects:

[0014] 1. The foldable safety guardrail for a crane has a detachable and foldable effect through the coordinated arrangement of a lifting mechanism, a pop-up mechanism, an ejection mechanism, a pressing mechanism, a cross bar and a slider. Through the coordinated arrangement of a column and a cross bar, the lifting mechanism and the cross bar can be folded into the groove of the base during use, and the column can be removed from the limit by pulling out the anti-rotation pin to make the column flat, thereby avoiding damage to the railing due to collision when working in a narrow space, improving economy, reducing the work of installing and disassembling the railing, and the operation is simple and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the utility model cutaway;

[0017] Figure 3 for Figure 2 Schematic diagram of the local structure of A;

[0018] Figure 4 This is a structural schematic diagram of the slider of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the cross bar of the utility model.

[0020] In the figure: 1, base; 2, column; 3, cross bar; 4, first slide groove; 5, slider; 6, second slide groove; 7, third slide groove; 8, ejection mechanism; 801, ejection block; 802, first spring; 9, ejection mechanism; 901, first push plate; 902, second spring; 10, pressing mechanism; 101, first push rod; 102, fixed block; 103, third spring; 104, push block; 105, fourth slide groove; 11, reset mechanism; 111, second push rod; 112, fixed plate; 113, second push plate; 114, fourth spring; 12, lifting mechanism; 121, first connecting rod; 122, second connecting rod; 13, first through hole; 14, second through hole; 15, handle; 16, anti-rotation pin; 17 pin hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figures 1 to 5The utility model provides a technical solution: a foldable safety guardrail for a crane, comprising a base 1, a column 2 and a cross bar 3, grooves are provided on both sides of the base 1, one side of the base 1 is movably connected to the column 2 through a rotating shaft, a pin hole 17 is provided on one side of the column 2, a first slide groove 4 is provided on the other side of the column 2, a slider 5 is slidably connected inside the first slide groove 4, a handle 15 is fixedly connected to the upper surface of the cross bar 3, two through holes are provided on the upper surface of the cross bar 3, second slide grooves 6 are provided on both sides of the cross bar 3, a slider 5 is slidably connected inside the second slide groove 6, and the slider 5 The upper surface is provided with a third slide groove 7, and the third slide groove 7 is movably connected with a pop-up mechanism 8, and the second slide groove 6 is internally movably connected with an ejection mechanism 9, the upper surface of the column 2 is provided with a first through hole 13, and the through hole is internally movably connected with a pressing mechanism 10, a second through hole 14 is provided on one side of the column 2, and the through hole is internally movably connected with a reset mechanism 11, and the lower part of the cross bar 3 is movably connected with a lifting mechanism 12, and the upper surface of the base 1 is provided with a groove, and the inner side wall of the groove is movably connected with the lifting mechanism 12, and the inner side wall of the groove is provided with a pin hole 17, and a stop pin 16 is inserted in the pin hole 17. The pop-up mechanism 8 includes an ejection block 801 and a first spring 802, the inner bottom wall of the third slide groove 7 is fixedly connected with the first spring 802, and the top of the first spring 802 is fixedly connected with an ejection block 801, and the ejection block 801 is slidably connected with the third slide groove 7. The ejection mechanism 9 includes a first push plate 901 and a second spring 902. The inner side wall of the second slide groove 6 is fixedly connected with the second spring 902. One side of the second spring 902 is fixedly connected with the first push plate 901. The first push plate 901 is slidably connected with the second slide groove 6. The pressing mechanism 10 includes a first push rod 101, a fixed block 102, a third spring 103, a push block 104 and a fourth slide groove 105. The first push rod 101 is slidably connected with the first through hole 13. The bottom of the first through hole 13 is provided with a fourth slide groove 105. The inner top wall of the fourth slide groove 105 is fixedly connected with the fixed block 102. The lower surface of the fixed block 102 is fixedly connected with the third spring 103. The interior of the fixed block 102 is slidably connected with the first push rod 101. The bottom of the first push rod 101 is fixedly connected with the push block 104. The upper surface of the push block 104 is fixedly connected with the third spring 103. The push block 104 is slidably connected with the fourth slide groove 105. The reset mechanism 11 includes a second push rod 111, a fixed plate 112, a second push plate 113 and a fourth spring 114. The second push rod 111 is slidably connected to the second through hole 14. The inner side wall of the first slide groove 4 is fixedly connected with the fixed plate 112. One side of the fixed plate 112 is fixedly connected with the fourth spring 114. A through hole is opened on one side of the fixed plate 112. The inside of the through hole is slidably connected with the second push rod 111. The fourth spring 114 is sleeved on the second push rod 111. One side of the second push rod 111 is fixedly connected with the second push plate 113. The side of the second push plate 113 close to the second push rod 111 is fixedly connected with the fourth spring 114. The second push plate 113 is slidably connected to the first slide groove 4.The lifting mechanism 12 includes a first connecting rod 121 and a second connecting rod 122. The first connecting rod 121 has two first connecting rods, and four through holes are opened on the front of the first connecting rod 121. The four through holes are in a rectangular array. The second connecting rod 122 has four first connecting rods, and three through holes are opened on the front of the second connecting rod 122. The first connecting rod 121 is hinged to the second connecting rod 122 through a rotating shaft. One end of the first connecting rod 121 is movably connected to the cross bar 3, and the other end of the first connecting rod 121 is movably connected to the base 1.

[0023] When in use, the columns 2 on both sides of the base 1 are rotated through the rotating shafts so that the tops of the columns 2 are parallel to the upper surface of the base 1, and the pin holes 17 opened on the sides of the columns 2 are aligned with the pin holes 17 opened on the sides of the base, and the anti-rotation pins 16 are inserted into the pin holes 17 from one side of the groove opened on the upper surface of the base 1, so that the anti-rotation pins 16 pass through the column 2 and the side walls of the grooves of the base 1, and the columns 2 are limited. The handle 15 fixed on the upper surface of the cross bar 3 is pulled upward, and the cross bar 3 drives the first connecting rod 121 of the lifting mechanism 12 to move upward. The first connecting rod 121 is hinged with the second connecting rod 122, and drives the second connecting rod 122 to move upward, and presses the ejection block 801, so that the ejection block 801 compresses the first spring 802, and moves downward along the third slide groove 7. The first push plate 901 pushes the slider 5 to move outward, so that the slider 5 enters the first slide groove 4, and the slider 5 pushes the second push plate 113 to move outward, compressing the fourth spring 114. The second push plate 113 drives the second push rod 111 to move outward. When the third slide groove 7 is aligned with the fourth slide groove 105, the first spring 802 in the third slide groove 7 is extended, and the first spring 802 pushes the ejection block 801 to move upward, so that the ejection block 801 is inserted into the fourth slide groove 105, thereby completing the fixation of the cross bar 3 and the columns 2 on both sides to prevent the staff from falling.

[0024] When folding, pressing the first push rod 101 drives the push block 104 to move downward, so that the third spring 103 is extended, and the push block 104 pushes the ejection block 801 to move downward and squeeze the first spring 802. At this time, the contracted fourth spring 114 is extended, and the fourth spring 114 pushes the second push plate 113 to insert the slider 5 into the second slide groove 6 opened at one end of the cross bar 3, and continues to push the second push rod 111 to move in the direction of the cross bar 3. The second push rod 111 pushes the second push plate 113 to make the slider 5 continue to move along the second slide groove 6 toward the bottom of the second slide groove 6 Move until the third slide groove 7 is aligned with the through hole opened on the upper surface of the cross bar 3. At this time, the compressed first spring 802 stretches, pushing the ejection block 801 to move upward, so that the ejection block 801 is inserted into the through hole opened on the upper surface of the cross bar 3, limiting the slider 5, pushing the handle 15 to move downward, so that the lifting mechanism 12 is folded and retracted into the groove opened on the upper surface of the base 1, and the stop pin 16 is pulled out from the pin hole, so that the two columns 2 are rotated through the rotating shaft, so that the side of the column 2 is flush with the upper surface of the base 1, and the folding of the safety guardrail is completed.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A foldable safety guardrail for a crane, comprising a base (1), a column (2) and a crossbar (3), characterized in that: Grooves are provided on both sides of the base (1); one side of the base (1) is movably connected to a column (2) via a rotating shaft; a pin hole (17) is provided on one side of the column (2); a first slide groove (4) is provided on the other side of the column (2); a slider (5) is slidably connected inside the first slide groove (4); a handle (15) is fixedly connected to the upper surface of the cross bar (3); two through holes are provided on the upper surface of the cross bar (3); a second slide groove (6) is provided on both sides of the cross bar (3); a slider (5) is slidably connected inside the second slide groove (6); a third slide groove (7) is provided on the upper surface of the slider (5); the third slide groove (7) A pop-up mechanism (8) is movably connected, an ejection mechanism (9) is movably connected inside the second slide groove (6), a first through hole (13) is provided on the upper surface of the column (2), a pressing mechanism (10) is movably connected inside the through hole, a second through hole (14) is provided on one side of the column (2), a reset mechanism (11) is movably connected inside the through hole, a lifting mechanism (12) is movably connected at the lower part of the cross bar (3), a groove is provided on the upper surface of the base (1), the lifting mechanism (12) is movably connected to the inner side wall of the groove, a pin hole (17) is provided on the inner side wall of the groove, and a stop pin (16) is inserted into the pin hole (17).

2. A foldable safety guardrail for a crane according to claim 1, characterized in that: The ejection mechanism (8) comprises an ejection block (801) and a first spring (802); the inner bottom wall of the third slide groove (7) is fixedly connected to the first spring (802); the top of the first spring (802) is fixedly connected to the ejection block (801); and the ejection block (801) is slidably connected to the third slide groove (7).

3. The foldable safety guardrail for a crane according to claim 1, characterized in that: The ejection mechanism (9) comprises a first push plate (901) and a second spring (902); the second spring (902) is fixedly connected to the inner side wall of the second slide groove (6); one side of the second spring (902) is fixedly connected to the first push plate (901); and the first push plate (901) is slidably connected to the second slide groove (6).

4. The foldable safety guardrail for a crane according to claim 1, characterized in that: The pressing mechanism (10) comprises a first push rod (101), a fixed block (102), a third spring (103), a push block (104) and a fourth slide groove (105); the first push rod (101) is slidably connected to the first through hole (13); a fourth slide groove (105) is provided at the bottom of the first through hole (13); an inner top wall of the fourth slide groove (105) is fixedly connected to the fixed block (102); a lower surface of the fixed block (102) is fixedly connected to the third spring (103); the interior of the fixed block (102) is slidably connected to the first push rod (101); a push block (104) is fixedly connected to the bottom of the first push rod (101); a third spring (103) is fixedly connected to the upper surface of the push block (104); and the push block (104) is slidably connected to the fourth slide groove (105).

5. The foldable safety guardrail for a crane according to claim 1, characterized in that: The reset mechanism (11) comprises a second push rod (111), a fixed plate (112), a second push plate (113) and a fourth spring (114); the second push rod (111) is slidably connected to the second through hole (14); the inner side wall of the first slide groove (4) is fixedly connected to the fixed plate (112); one side of the fixed plate (112) is fixedly connected to the fourth spring (114); one side of the fixed plate (112) is provided with a through hole; the interior of the through hole is slidably connected to the second push rod (111); the fourth spring (114) is sleeved on the second push rod (111); one side of the second push rod (111) is fixedly connected to the second push plate (113); the side of the second push plate (113) close to the second push rod (111) is fixedly connected to the fourth spring (114); the second push plate (113) is slidably connected to the first slide groove (4).

6. The foldable safety guardrail for a crane according to claim 1, characterized in that: The lifting mechanism (12) comprises a first connecting rod (121) and a second connecting rod (122), wherein the first connecting rod (121) has two first connecting rods (121), and the front side of the first connecting rod (121) is provided with four through holes, and the four through holes are arranged in a rectangular array, and the second connecting rod (122) has four second connecting rods (122), and the front side of the second connecting rod (122) is provided with three through holes, the first connecting rod (121) is hingedly connected to the second connecting rod (122) via a rotating shaft, one end of the first connecting rod (121) is movably connected to a cross rod (3), and the other end of the first connecting rod (121) is movably connected to a base (1).

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