Counterweight protective fence

Abstract

The utility model provides a counter-weight protective fence which comprises a front protective fence, two sets of side supporting arms arranged on the two sides of the front protective fence and two side protective fences arranged on the two sets of side supporting arms respectively, the front protective fence comprises a plurality of vertically-arranged front protective plates, and every two vertically-adjacent front protective plates form a set. A first reinforcing arm connected with the two front protection plates is arranged at the joint of the two front protection plates in the same set, a second reinforcing arm is arranged at the top of one side of the uppermost front protection plate, a third reinforcing arm is arranged at the bottom of one side of the lowermost front protection plate, and each set of side supporting arms comprises a plurality of side supporting arms. Wherein one side supporting arm is arranged at the top of one side of the uppermost front protection plate, the other side supporting arm is arranged at the bottom of one side of the lowermost front protection plate, and the rest side supporting arms correspond to the multiple sets of front protection plates in a one-to-one mode and are arranged on the two corresponding front protection plates. The counterweight protective guard is low in cost and high in strength.

Description

Technical Field

[0001] This utility model belongs to the field of elevator technology, and in particular relates to a counterweight guardrail. Background Technology

[0002] To prevent personnel from accidentally entering the counterweight's operating area while in the elevator shaft, counterweight guardrails need to be installed in the counterweight's operating area in the elevator pit. These guardrails must meet specific protective height and width requirements and possess sufficient strength. However, protective strength and material usage present a trade-off; balancing material costs with guardrail strength is a problem that elevator manufacturers need to solve. Utility Model Content

[0003] The purpose of this utility model is to provide a low-cost, high-strength counterweight guardrail.

[0004] This utility model is achieved through the following technical solution:

[0005] A counterweight guardrail includes a front guardrail, two sets of side arms on both sides of the front guardrail, and two side guardrails respectively set on the two sets of side arms. The front guardrail includes several vertically arranged front guard plates. Two adjacent front guard plates form a group. The joint of two front guard plates in the same group is provided with a first reinforcing arm that is connected to both of them. A second reinforcing arm is provided on the top of one side of the uppermost front guard plate, and a third reinforcing arm is provided on the bottom of one side of the lowermost front guard plate. Each set of side arms includes multiple side arms. One side arm is provided on the top of one side of the uppermost front guard plate, and one side arm is provided on the bottom of one side of the lowermost front guard plate. The remaining side arms correspond one-to-one with the multiple sets of front guard plates and are set on the corresponding two front guard plates.

[0006] Furthermore, the upper part of the first reinforcing arm is provided with a plurality of first through holes spaced apart, and the lower part of the first reinforcing arm is provided with a plurality of second through holes spaced apart. Of the two front guard plates connected to the first reinforcing arm, the bottom of the upper front guard plate is provided with a plurality of first strip holes corresponding one-to-one with the plurality of first through holes. Bolts are passed through the corresponding first strip holes and first through holes, and then nuts are screwed in to connect the upper front guard plate to the first reinforcing arm. The top of the lower front guard plate is provided with a plurality of second strip holes corresponding one-to-one with the plurality of second through holes. Bolts are passed through the corresponding second strip holes and second through holes, and then nuts are screwed in to connect the lower front guard plate to the first reinforcing arm. The front guard plate is connected to the first reinforcing arm. The second reinforcing arm is provided with several third through holes at intervals. The uppermost front guard plate is provided with several third strip holes corresponding to the third through holes. After bolts pass through the corresponding third strip holes and third through holes, nuts are screwed in to connect the uppermost front guard plate to the second reinforcing arm. The third reinforcing arm is provided with several fourth through holes at intervals. The lowermost front guard plate is provided with several fourth strip holes corresponding to the fourth through holes. After bolts pass through the corresponding fourth strip holes and fourth through holes, nuts are screwed in to connect the lowermost front guard plate to the third reinforcing arm.

[0007] Furthermore, a notch is provided on the bottom front guard plate for the compensation chain to pass through, and a lower support arm is detachably installed on both sides of the notch on the bottom front guard plate, with several fifth through holes on the lower support arm.

[0008] Furthermore, the lower support arm has a fifth strip hole on its upper part, and a sixth through hole corresponding to the fifth strip hole is provided on the bottom front guard plate. The lower support arm is connected to the bottom front guard plate by bolts passing through the corresponding fifth strip hole and sixth through hole and screwing nuts.

[0009] Furthermore, the side arm is L-shaped and includes a first connecting plate and a second connecting plate. The first connecting plate is connected to the corresponding front guard plate by bolts, and the second connecting plate is connected to the corresponding side guardrail by several bolts.

[0010] Furthermore, the second connecting plate has a plurality of sixth strip-shaped holes spaced apart on the end away from the first connecting plate.

[0011] Furthermore, the side guardrail includes a first side guard plate and a second side guard plate, with L-shaped side plates on both sides of the first and second side guard plates, and the bottom end of the first side guard plate nested inside the top end of the second side guard plate.

[0012] Furthermore, the front skid plate is Z-shaped, including a first front skid plate, a connecting surface, and a second front skid plate. The first reinforcing arm, the second reinforcing arm, and the third reinforcing arm are all Z-shaped to match the front skid plate.

[0013] Furthermore, a peephole is provided on the front fender.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: by connecting the reinforcing arm at the edge of the front guard plate to strengthen the front guard plate, the front guard plate can be made "extremely thin". The overall design is economical and simple, achieving low cost and high strength. It can be well adapted to the scenario where the counterweight guard railing of the elevator without machine room is close to the car frame structure, and the solution has good adaptability. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of the counterweight guardrail of this utility model;

[0016] Figure 2 This is a schematic diagram showing the connection between the front guard plates in the counterweight guardrail of this utility model;

[0017] Figure 3 This is a schematic diagram showing the connection between the front guard plate and the first reinforcing arm in the counterweight guardrail of this utility model;

[0018] Figure 4 This is a schematic diagram showing the connection between the front guard plate and the third reinforcing arm in the counterweight guardrail of this utility model;

[0019] Figure 5 This is a schematic diagram of the side guardrail in the counterweight protection railing of this utility model;

[0020] Figure 6 for Figure 5 Enlarged schematic diagram of part A;

[0021] Figure 7 This is a schematic diagram of the lower support arm in the counterweight guardrail of this utility model.

[0022] In the diagram, 1-front guard plate, 11-first strip hole, 12-second strip hole, 13-notch, 14-viewing hole, 15-first front guard surface, 16-connecting surface, 17-second front guard surface, 2-first reinforcing arm, 21-first through hole, 22-second through hole, 3-second reinforcing arm, 4-third reinforcing arm, 5-side support arm, 51-first connecting plate, 52-second connecting plate, 53-sixth strip hole, 6-side guardrail, 61-first side guard plate, 62-second side guard plate, 63-L-shaped side plate, 7-lower support arm, 71-fifth through hole, 72-fifth strip hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Please see Figures 1 to 4 , Figure 1 This is a structural schematic diagram of the counterweight guardrail of this utility model. Figure 2 This is a schematic diagram showing the connection between the front guard plates in the counterweight guardrail of this utility model. Figure 3 This is a schematic diagram showing the connection between the front guard plate and the first reinforcing arm in the counterweight guardrail of this utility model. Figure 4This is a schematic diagram showing the connection between the front guard plate and the third reinforcing arm in the counterweight guardrail of this utility model. A counterweight guardrail includes a front guardrail, two sets of side arms 5 disposed on both sides of the front guardrail, and two side guardrails 6 respectively disposed on the two sets of side arms 5. The front guardrail includes several vertically arranged front guard plates 1. Two adjacent front guard plates 1 form a group. At the junction of two front guard plates 1 in the same group, a first reinforcing arm 2 is provided, which is respectively connected to both. A second reinforcing arm 3 is provided on the top of one side of the uppermost front guard plate 1, and a third reinforcing arm 4 is provided on the bottom of one side of the lowermost front guard plate 1. Each set of side arms 5 includes multiple side arms 5. One side arm 5 is disposed on the top of one side of the uppermost front guard plate 1, and one side arm 5 is disposed on the bottom of one side of the lowermost front guard plate 1. The remaining side arms 5 correspond one-to-one with the multiple sets of front guard plates 1 and are disposed on the corresponding two front guard plates 1.

[0029] The front guard plate 1 and side guardrail 6 of this novel counterweight guardrail can be made of thin metal sheets bent into a specific shape. Two adjacent front guard plates 1 are then connected by a first reinforcing arm 2, reinforcing each other. A second reinforcing arm 3 and a third reinforcing arm 4 reinforce the top and bottom of the uppermost and lowermost front guard plates 1, respectively. This ensures that each front guard plate 1 has reinforcing arms at its edge, allowing for an extremely thin front guard plate. The overall design is economical and simple, achieving low cost and high strength. It is well-suited for machine-room-less elevators where the counterweight guardrail is close to the car frame structure, demonstrating good adaptability. In use, the side support arms 5 are fixed to the guide rails. Multiple side support arms 5 in the same group are detachably connected to a side guardrail 6, allowing the front guardrail and side guardrail 6 to surround the outside of the elevator counterweight frame, achieving a protective function. In one embodiment, the front guard plate 1 is Z-shaped and includes a first front guard surface 15, a connecting surface 16, and a second front guard surface 17. The first reinforcing arm 2, the second reinforcing arm 3, and the third reinforcing arm 4 are all Z-shaped to match the front guard plate 1.

[0030] The first reinforcing arm 2, the second reinforcing arm 3, and the third reinforcing arm 4 can be fixed to the corresponding front guard plate 1 by riveting, welding, or bolting. In one embodiment, the upper part of the first reinforcing arm 2 is provided with a plurality of first through holes 21 spaced apart, and the lower part of the first reinforcing arm 2 is provided with a plurality of second through holes 22 spaced apart. Among the two front guard plates 1 connected to the first reinforcing arm 2, the bottom of the upper front guard plate 1 is provided with a plurality of first strip holes 11 corresponding one-to-one with the plurality of first through holes 21. The upper front guard plate 1 is connected to the first reinforcing arm 2 by bolts passing through the corresponding first strip holes 11 and first through holes 21 and then screwing nuts. The top of the lower front guard plate 1 is provided with a plurality of second strip holes 12 corresponding one-to-one with the plurality of second through holes 22. The lower front guard plate 1 is connected to the first reinforcing arm 2 by bolts passing through the corresponding second strip holes 12 and second through holes 22 and then screwing in nuts. The second reinforcing arm 3 has several third through holes spaced apart. The uppermost front guard plate 1 has several third strip holes corresponding to the third through holes. Bolts passing through the corresponding third strip holes and third through holes are then screwed in nuts to connect the uppermost front guard plate 1 to the second reinforcing arm 3. The third reinforcing arm 4 has several fourth through holes spaced apart. The lowermost front guard plate 1 has several fourth strip holes corresponding to the fourth through holes. Bolts passing through the corresponding fourth strip holes and fourth through holes are then screwed in nuts to connect the lowermost front guard plate 1 to the third reinforcing arm 4. By bolting through the strip holes on the corresponding front guard plate 1 and the through holes on the reinforcing arm, the position of the reinforcing arm on the corresponding front guard plate 1 can be adjusted, facilitating the installation of the corresponding reinforcing arm on the front guard plate 1 and ensuring a secure and reliable installation. This also facilitates the processing and production of the front guard plate 1 and the reinforcing arm, reducing production costs. Additionally, a step is formed between the front skid plate 1 and the first reinforcing arm 2 for mounting adjacent front skid plates 1.

[0031] Please combine Figure 7 , Figure 7This is a schematic diagram of the lower support arm in the counterweight guardrail of this utility model. In one embodiment, a notch 13 is provided on the lowermost front guard plate 1 for the compensation chain to pass through. Lower support arms 7 are detachably installed on both sides of the notch 13 on the lowermost front guard plate 1. The lower support arms 7 are provided with several fifth through holes 71. The notch 13 on the lowermost front guard plate 1 allows the compensation chain to pass through, preventing the compensation chain from scratching the front guardrail. The compensation chain is also positioned close to the ground to avoid obstructing workers in the elevator shaft. The two lower support arms 7 can strengthen the lower guard plate on both sides of the notch 13 and are used to install the front guardrail on the ground. The lower support arms 7 can be connected to the ground by expansion bolts through the several fifth through holes 71. In one embodiment, the upper part of the lower support arm 7 is provided with a fifth strip hole 72, and the lowermost front guard plate 1 is provided with a sixth through hole corresponding to the fifth strip hole 72. The lower support arm 7 is connected to the lowermost front guard plate 1 by bolts passing through the corresponding fifth strip hole 72 and sixth through hole and then screwing in nuts. The lower support arm 7 is provided with a fifth strip-shaped hole 72, through which the installation position of the lower support arm 7 can be adjusted, thereby adjusting the distance between the front guardrail and the ground. In one embodiment, the lower support arm 7 is L-shaped, with the vertical part of the lower support arm 7 connected to the lowermost front guard plate 1, and the horizontal part of the lower support arm 7 used to connect with the ground.

[0032] In one embodiment, the side support arm 5 is L-shaped and includes a first connecting plate 51 and a second connecting plate 52. The first connecting plate 51 is bolted to the corresponding front guard plate 1, and the second connecting plate 52 is bolted to the corresponding side guardrail 6. The side support arm 5 is made of a rear metal plate bent into an L-shape. The first connecting plate 51 can be used to connect to one or two corresponding front guard plates 1, fixing the front guard plate 1 to the side support arm 5. The second connecting plate 52 can be used to connect to the side guardrail 6, fixing the side guardrail 6 to the side support arm 5, thereby surrounding the elevator counterweight frame through the front guardrail and the side guardrail 6. In one embodiment, the second connecting plate 52 has a plurality of sixth strip-shaped holes 53 spaced apart on the end away from the first connecting plate 51. The second connecting plate 52 is connected to the guide rail through the plurality of sixth strip-shaped holes 53, and its position is adjustable to adjust the overall position of the counterweight guardrail relative to the elevator counterweight frame. In one embodiment, the second connecting plate 52 is provided with a plurality of seventh through holes, and the side guardrail 6 is provided with a plurality of seventh strip holes corresponding to the plurality of seventh through holes. The side guardrail 6 is installed on the second connecting plate 52 by bolts passing through the corresponding seventh strip holes and seventh through holes and then screwing nuts. This arrangement facilitates the adjustment of the installation position of the side guardrail 6 and facilitates the processing and production of the side guardrail 6 and the side support arm 5, thereby reducing production costs.

[0033] In one embodiment, the multiple side arms 5 in the same group include several first side arms 5, one second side arm 5, and one third side arm 5. The connection between two adjacent front guard plates 1 and the first reinforcing arm 2 connected to the connection between the two front guard plates 1 form a first mounting part. The second reinforcing arm 3 is connected to the top of the uppermost front guard plate 1 to form a second mounting part. The third reinforcing arm 4 is connected to the bottom of the lowermost front guard plate 1 to form a third mounting part. The multiple first side arms 5 correspond one-to-one with the multiple first mounting parts. The first connecting plate 51 of the first side arm 5 is provided with two eighth through holes, and the first mounting part is provided with two corresponding eighth through holes. The first side arm 5 has an eighth through hole. A bolt passes through the corresponding eighth through hole and the eighth strip hole, and a nut is then screwed in to connect the first side arm 5 to the corresponding first mounting part. The second side arm 5 has a ninth through hole on its first connecting plate 51, and a ninth strip hole corresponding to the ninth through hole on its second mounting part. A bolt passes through the corresponding ninth through hole and the ninth strip hole, and a nut is then screwed in to connect the second side arm 5 to the second mounting part. The third side arm 5 has a tenth through hole on its first connecting plate 51, and a tenth strip hole corresponding to the tenth through hole on its third mounting part. A bolt passes through the corresponding tenth through hole and the tenth strip hole, and a nut is then screwed in to connect the third side arm 5 to the third mounting part. This design reduces the processing difficulty and production costs.

[0034] Please combine Figure 5 and Figure 6 , Figure 5 This is a structural schematic diagram of the side guardrail in the counterweight protection railing of this utility model. Figure 6 for Figure 5 An enlarged schematic diagram of part A is shown. In one embodiment, the side railing 6 includes a first side guard plate 61 and a second side guard plate 62. L-shaped side plates 63 are provided on both sides of the first side guard plate 61 and the second side guard plate 62. The bottom end of the first side guard plate 61 is nested within the top end of the second side guard plate 62. The side railing 6 adopts a split design, with the first side guard plate 61 slightly smaller than the second side guard plate 62, allowing the first side guard plate 61 to be nested within the second side guard plate 62. This facilitates packing and transportation, avoiding the problem of the side railing 6 being too long to pack if it were made as a single piece. In use, the first side guard plate 61 is pulled out from the second side guard plate 62 to a suitable length, and then the first side guard plate 61 and the second side guard plate 62 are installed on the corresponding side support arms 5 to form the side railing 6.

[0035] In one embodiment, the front guard plate 1 is provided with a viewing hole 14. The viewing hole 14 can be used to observe the position of the counterweight frame.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A counterweight guardrail, characterized in that The front guardrail comprises a plurality of vertically arranged front guard plates, two groups of side support arms arranged on both sides of the front guardrail, and two side guardrails arranged on the two groups of side support arms respectively.

2. The counterweight guardrail according to claim 1, wherein, The upper part of the first reinforcing arm is provided with a plurality of first through holes, and the lower part of the first reinforcing arm is provided with a plurality of second through holes.

3. The counterweight guardrail according to claim 1, wherein, The bottom of the upper front guard plate among the two front guard plates connected with the first reinforcing arm is provided with a plurality of first strip-shaped holes corresponding to the plurality of first through holes.

4. The counterweight guardrail according to claim 3, wherein, The top of the lower front guard plate among the two front guard plates connected with the first reinforcing arm is provided with a plurality of second strip-shaped holes corresponding to the plurality of second through holes.

5. The counterweight guardrail according to claim 1, wherein, The upper part of the second reinforcing arm is provided with a plurality of third through holes.

6. The counterweight guardrail according to claim 5, wherein, The top of the uppermost front guard plate is provided with a plurality of third strip-shaped holes corresponding to the plurality of third through holes.

7. The counterweight guardrail of claim 1, wherein, The bottom of the lowermost front guard plate is provided with a plurality of fourth strip-shaped holes corresponding to the plurality of fourth through holes. The lowermost front guard plate is provided with a gap for the compensation chain to pass through. The lowermost front guard plate is detachably installed with a lower support arm on both sides of the gap. The upper part of the lower support arm is provided with a fifth strip-shaped hole. The lowermost front guard plate is provided with a sixth through hole corresponding to the fifth strip-shaped hole. The side support arm is L-shaped and comprises a first connecting plate and a second connecting plate. The second connecting plate is provided with a plurality of sixth strip-shaped holes on the end away from the first connecting plate. The side guardrail comprises a first side guard plate and a second side guard plate. The bottom end of the first side guard plate is nested in the top end of the second side guard plate.

8. The counterweight guardrail of claim 1, wherein, The front guard plate is Z-shaped, comprising a first front guard surface, a connecting surface and a second front guard surface, and the first reinforcing arm, the second reinforcing arm and the third reinforcing arm are all Z-shaped and matched with the front guard plate.

9. The counterweight guardrail of claim 1, wherein, The front guard plate is provided with a peep hole.

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