Telescopic foundation pit edge protective fence

Abstract

The utility model belongs to the technical field of constructional engineering, and particularly relates to a telescopic foundation pit edge protective fence which comprises a first protective fence. The end part of the first guardrail is fixedly connected with two groups of foot stools; connecting plates are fixedly connected to the middle parts of the foot stools, and the two groups of connecting plates are arranged in a staggered manner; the middle part of the connecting plate is slidably connected with a second guardrail; the inner wall of the second guardrail is fixedly connected with a plurality of groups of limiting rods, and the plurality of groups of limiting rods are arranged in the middle of the connecting plate in a sliding manner; according to the two sets of second guardrails which are arranged in a matched mode, the effective working length of the first guardrails in the using process can be increased, the problem that when multiple first guardrails with fixed shapes need to be spliced together, many bolts need to be used for fixing, and troubles exist is solved, and meanwhile the two sets of stored second guardrails are convenient to store. The space occupied by the first guardrail during storage or transportation can be reduced, and the second guardrail is limited under the action of the top plate.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering technology, specifically a telescopic foundation pit edge protection railing. Background Technology

[0002] The space below ground excavated for the construction of building foundations and basements is usually called a foundation pit. There are various methods for excavating foundation pits, such as slope protection, foundation pit wall support, and shotcrete wall protection. Based on factors such as excavation depth and surrounding environment, foundation pits can be mainly divided into Class I, Class II and Class III foundation pits.

[0003] Pit edge protection railings are one of the important pieces of equipment in the construction process. They not only serve as safety warnings, but also prevent construction workers from accidentally falling into the pit, effectively protecting their lives.

[0004] Through long-term observation, it has been found that existing guardrails are usually fixed in shape, which not only takes up a lot of space during transportation or storage, but also requires many complicated steps to install and dismantle shorter guardrails, which is troublesome. Therefore, a telescopic pit edge guardrail is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve at least one of the technical problems mentioned in the background technology, this utility model proposes a telescopic pit edge protection railing.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The telescopic pit edge protection railing of this utility model includes a first railing; two sets of legs are fixedly connected to the ends of the first railing; a connecting plate is fixedly connected to the middle of the legs, and the two sets of connecting plates are staggered; a second railing is slidably connected to the middle of the connecting plate; multiple sets of limiting rods are fixedly connected to the inner wall of the second railing, and the multiple sets of limiting rods are slidably connected to the middle of the connecting plate; two sets of top plates are fixedly connected to the side wall of the connecting plate; a first inner groove matching the shape of the top plate is opened in the middle of the second railing.

[0007] Preferably, a frame plate is fixed to the outer wall of the second guardrail; two sets of support members are fixed to the middle of the frame plate; elastic members are fixed to the ends of the support members, and the two sets of elastic members are symmetrically arranged; a locking pin is fixed to the end of the elastic member, and the locking pin is slidably arranged in the middle of the support member; a first magnetic block is fixed to the end of the locking pin; a second inner groove is opened in the middle of the top plate, and the second inner groove is shaped to match the end of the locking pin; a second magnetic block is fixed to the inner wall of the second inner groove, and the second magnetic block and the first magnetic block are attracted to each other.

[0008] Preferably, a fixing frame is fixedly connected to the outer wall of the frame plate; a sliding rod is slidably connected to the middle of the fixing frame, and the end of the sliding rod is fixedly connected to the top of a set of locking pins; a pull rope is fixedly connected to the other end of the sliding rod, and the pull rope is through the middle of the frame plate; the end of the pull rope is fixedly connected to the bottom of another set of locking pins.

[0009] Preferably, a conduit is fixedly connected to the middle of the frame plate, and the conduit is U-shaped; two sets of gaskets are fixedly connected to the top of the conduit; and the pull rope is slidably arranged on the inner wall of the conduit.

[0010] Preferably, two sets of extrusion plates are fixedly connected to the middle of the first guardrail; two sets of elastic sheets are fixedly connected to the outer wall of the second guardrail, and the elastic sheets and the extrusion plates are arranged in a planar manner.

[0011] Preferably, a guide groove is provided at the end of the first inner groove, and the inner wall of the guide groove is inclined.

[0012] Preferably, a friction pad is fixedly connected to the middle of the slide rod.

[0013] The beneficial effects of this utility model are:

[0014] This utility model provides a telescopic pit edge protection railing. By cooperating with two sets of second railings, the effective working length of the first railing can be increased during use. This reduces the troublesome problem of needing to use many bolts to fix multiple fixed-shape first railings together. At the same time, the two sets of second railings, after being stored, can reduce the space occupied by the first railing during storage or transportation. Under the action of the top plate, the second railings are limited.

[0015] This utility model provides a telescopic pit edge protection railing. With the help of the set locking pin, the stability of the top plate in limiting the second railing can be further improved, reducing the problem that the second railing will shift and retract at the side wall of the first railing during long-term use. At the same time, under the action of the elastic element, the problem that the hanging locking pin can only block the end of the top plate, making it difficult for the top plate to penetrate through the middle of the first inner groove can be reduced. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0017] In the attached diagram:

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 for Figure 1Enlarged view of point A;

[0020] Figure 3 This is a schematic diagram of the second guardrail structure in this utility model;

[0021] Figure 4 for Figure 3 Enlarged view of point B;

[0022] Figure 5 This is a schematic diagram of the slide bar structure in this utility model.

[0023] Legend:

[0024] 1. First guardrail; 11. Leg; 12. Connecting plate; 13. Second guardrail; 14. Limiting rod; 15. Top plate; 16. First inner groove; 2. Frame plate; 21. Support component; 22. Elastic component; 23. Locking pin; 24. First magnetic block; 25. Second inner groove; 26. Second magnetic block; 3. Fixing frame; 31. Sliding rod; 32. Pull rope; 4. Guide tube; 41. Gasket; 5. Extrusion plate; 51. Elastic sheet; 6. Guide groove; 7. Friction pad. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Specific implementation examples are given below.

[0027] like Figure 1-5As shown, a telescopic pit edge protection railing includes a first railing 1; two sets of legs 11 are fixedly connected to the ends of the first railing 1; a connecting plate 12 is fixedly connected to the middle of the legs 11, and the two sets of connecting plates 12 are staggered; a second railing 13 is slidably connected to the middle of the connecting plate 12; multiple sets of limiting rods 14 are fixedly connected to the inner wall of the second railing 13, and the multiple sets of limiting rods 14 are slidably set in the middle of the connecting plate 12; two sets of top plates 15 are fixedly connected to the side wall of the connecting plate 12; a first inner groove 16 matching the shape of the top plate 15 is opened in the middle of the second railing 13; during operation, after the workers move multiple first railings 1 to the vicinity of the pit, they can first lift the first railings 1 and then pull the two sets of second railings 13 outward in sequence. Because the second railings 13 are slidably set with the connecting plate 12, and with the cooperation of the multiple sets of limiting rods 14, the second railings 13 and the first railings 13 can be kept in close contact. The railings 1 can be horizontally extended until the two sets of top plates 15 in the middle of the connecting plate 12 penetrate the first inner groove 16 in the middle of the second guardrail 13. At this point, the multiple sets of extended first guardrails 1 and second guardrails 13 can be fixed. When the second guardrails 13 need to be stored later, the two sets of second guardrails 13 can be pushed in the direction again to complete the storage of the two sets of second guardrails 13 in the middle of the first guardrail 1. This step, together with the two sets of second guardrails 13, can increase the effective working length of the first guardrail 1 when in use, and reduce the trouble caused by the need to use a lot of bolts to fix multiple fixed shapes of first guardrails 1 together. At the same time, the two sets of second guardrails 13 after being stored can reduce the space occupied by the first guardrail 1 when it is stored or transported. Under the action of the top plate 15, the second guardrails 13 are limited.

[0028] like Figure 1-5As shown, a frame plate 2 is fixed to the outer wall of the second guardrail 13; two sets of support members 21 are fixed to the middle of the frame plate 2; elastic members 22 are fixed to the ends of the support members 21, and the two sets of elastic members 22 are symmetrically arranged; a locking pin 23 is fixed to the end of the elastic member 22, and the locking pin 23 is slidably arranged in the middle of the support member 21; a first magnetic block 24 is fixed to the end of the locking pin 23; a second inner groove 25 is opened in the middle of the top plate 15, and the second inner groove 25 and the end of the locking pin 23 are shaped to match; a second magnetic block 26 is fixed to the inner wall of the second inner groove 25, and the second magnetic block 26 and the first magnetic block 24 are attracted to each other; during operation, because the frame plate 2 is set in the middle of the second guardrail 13, and the top plate 15 subsequently penetrates the middle of the first inner groove 16, the second magnetic block 26 set in the inner wall of the top plate 15 will approach the first magnetic block 24. The position allows the two to approach each other and generate attraction, which then moves the entire locking pin 23 towards the position of the second magnetic block 26 until the first magnetic block 24 and the second magnetic block 26 are attracted and fixed together. Afterwards, if the two need to be separated, the ends of the two sets of locking pins 23 can be pulled in sequence to separate them. The elastic force of the elastic element 22 will reset the locking pins 23. This step, together with the locking pins 23, can further improve the limiting stability of the top plate 15 on the second guardrail 13, and reduce the problem that the second guardrail 13 will shift and retract at the side wall of the first guardrail 1 during long-term use. At the same time, under the action of the elastic element 22, the problem that the hanging locking pins 23 only block the end of the top plate 15, making it difficult for the top plate 15 to penetrate the middle of the first inner groove 16 can be reduced.

[0029] like Figure 1-5 As shown, a fixing frame 3 is fixedly connected to the outer wall of the frame plate 2; a sliding rod 31 is slidably connected to the middle of the fixing frame 3, and the end of the sliding rod 31 is fixedly connected to the top of a set of locking pins 23; a pull rope 32 is fixedly connected to the other end of the sliding rod 31, and the pull rope 32 is through the middle of the frame plate 2; the end of the pull rope 32 is fixedly connected to the bottom of another set of locking pins 23; during operation, because the fixing frame 3 is provided on the outer wall of the frame plate 2, when the worker needs to separate the two sets of first magnetic blocks 24 and second magnetic blocks 26, the worker can pull the sliding rod 3 upwards. In the middle section, the sliding rod 31 can simultaneously retract the upper locking pin 23 inwards. In conjunction with the pull rope 32, the bottom position of the other set of locking pins 23 can be pulled until the two sets of first magnetic blocks 24 and second magnetic blocks 26 are completely separated. This step, in conjunction with the sliding rod 31, can increase the speed of separating the two sets of first magnetic blocks 24 and second magnetic blocks 26, further improving the efficiency of disassembling the first guardrail 1 as a whole. At the same time, it can reduce the problem of workers having to frequently bend over and pull the bottom locking pins 23.

[0030] like Figure 1-5As shown, a conduit 4 is fixedly connected to the middle of the frame plate 2, and the conduit 4 is U-shaped; two sets of gaskets 41 are fixedly connected to the top of the conduit 4; the pull rope 32 is slidably arranged on the inner wall of the conduit 4; during operation, by setting the conduit 4 in the middle of the frame plate 2, when the operator pulls the slide bar 31, the pull rope 32 can slide synchronously on the inner wall of the arc-shaped conduit 4, and the position of the pull rope 32 is limited by the gaskets 41. Under the action of the conduit 4, this step can reduce the problem of the pull rope 32 sliding directly through the inner wall of the frame plate 2, which would cause greater wear on the middle of the pull rope 32. In addition, the soft material gaskets 41 further protect the pull rope 32.

[0031] like Figure 1-5 As shown, two sets of extrusion plates 5 are fixedly connected to the middle of the first guardrail 1; two sets of elastic plates 51 are fixedly connected to the outer wall of the second guardrail 13, and the elastic plates 51 and the extrusion plates 5 are arranged in a plane. During operation, because the elastic plates 51 are provided in the middle of the second guardrail 13, when the second guardrail 13 is subsequently stored, the protrusion in the middle of the slide bar 31 can contact the edge of the extrusion plate 5 in sequence, and extrude the protrusion in the middle of the elastic plate 51 to deform, and then reset. This step can improve the neatness of the middle of the second guardrail 13 under the action of vibration generated by the deformation of the elastic plate 51. At the same time, there is a certain resistance after the extrusion plate 5 and the elastic plate 51 come into contact, which can reduce the problem of the first guardrail 1 unfolding again when storing the second guardrail 13.

[0032] like Figure 1-5 As shown, a guide groove 6 is provided at the end of the first inner groove 16, and the inner wall of the guide groove 6 is inclined. During operation, the top plate 15 can first contact the guide groove 6 when penetrating the first inner groove 16, because the guide groove 6 is provided on the inner wall of the first inner groove 16. This step, together with the inclined and unfolded guide groove 6, can reduce the problem of slight deviation between the position of the top plate 15 and the first inner groove 16, which would cause them to get stuck when inserted.

[0033] like Figure 1-5 As shown, a friction pad 7 is fixedly connected to the middle of the slide rod 31. During operation, by setting the friction pad 7 in the middle of the slide rod 31, when the operator holds the slide rod 31, his / her hand can first contact the friction pad 7. This step, under the action of the friction pad 7, can improve the comfort of holding the slide rod 31 and reduce the problem of slippage between the slide rods 31.

[0034] Working principle: After moving multiple first guardrails 1 to the vicinity of the foundation pit, the first guardrails 1 can be lifted first, and then the two sets of second guardrails 13 can be pulled outward in sequence. Since the second guardrails 13 and the connecting plate 12 are slidably connected, and with the help of multiple sets of limiting rods 14, the second guardrails 13 and the first guardrails 1 can be horizontally unfolded until the two sets of top plates 15 in the middle of the connecting plate 12 penetrate the first inner groove 16 in the middle of the second guardrails 13. At this time, the unfolded sets of first guardrails 1 and second guardrails 13 can be fixed. When the second guardrails 13 need to be stored later, the two sets of first guardrails 13 are pushed in the direction again. The second guardrail 13 is then used to store the two sets of second guardrails 13 into the middle of the first guardrail 1. A frame plate 2 is provided in the middle of the second guardrail 13. After the top plate 15 penetrates the middle of the first inner groove 16, the second magnetic block 26 on the inner wall of the top plate 15 will approach the position of the first magnetic block 24, causing them to come close together and generate attraction. This will then drive the locking pin 23 to move towards the position of the second magnetic block 26 until the first magnetic block 24 and the second magnetic block 26 are attracted and fixed together. To separate them, the ends of the two sets of locking pins 23 can be pulled sequentially to separate them, with the help of an elastic element. The elastic force of 22 resets the locking pin 23 as a whole. A fixing bracket 3 is provided on the outer wall of the frame plate 2. When the operator needs to separate the two sets of first magnetic blocks 24 from the second magnetic blocks 26, the operator can pull the middle of the sliding rod 31 upwards. This causes the sliding rod 31 to simultaneously pull the upper locking pin 23 inwards. In conjunction with the pull rope 32, the bottom of the other set of locking pins 23 can be pulled until the two sets of first magnetic blocks 24 and second magnetic blocks 26 are completely separated. A guide tube 4 is provided in the middle of the frame plate 2. When the operator pulls the sliding rod 31, the pull rope 32 simultaneously moves along the inner wall of the arc-shaped guide tube 4. The slide bar 31 slides at a certain position and, in conjunction with the pad 41, limits the position of the pull rope 32. An elastic piece 51 is provided in the middle of the second guardrail 13. When the second guardrail 13 is subsequently stored, the protrusion in the middle of the slide bar 31 can contact the edge of the extrusion plate 5 in sequence, and compress the protrusion in the middle of the elastic piece 51 to deform it, and then reset it. A guide groove 6 is provided on the inner wall of the first inner groove 16. When the top plate 15 passes through the first inner groove 16, it can first contact the guide groove 6. A friction pad 7 is provided in the middle of the slide bar 31. When the staff holds the slide bar 31, their hands can first contact the friction pad 7.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A telescopic pit edge protection railing, comprising a first railing (1); two sets of legs (11) are fixedly connected to the ends of the first railing (1); characterized in that: The leg (11) is fixedly connected to a connecting plate (12) in the middle, and the two sets of connecting plates (12) are staggered; the connecting plate (12) is slidably connected to a second guardrail (13); the inner wall of the second guardrail (13) is fixedly connected to multiple sets of limiting rods (14), and the multiple sets of limiting rods (14) are slidably connected in the middle of the connecting plate (12); the side wall of the connecting plate (12) is fixedly connected to two sets of top plates (15); the second guardrail (13) has a first inner groove (16) in the middle that matches the shape of the top plate (15).

2. The telescopic pit edge protection railing as described in claim 1, characterized in that: The second guardrail (13) has a frame plate (2) fixed to its outer wall; two sets of support members (21) are fixed to the middle of the frame plate (2); elastic members (22) are fixed to the ends of the support members (21), and the two sets of elastic members (22) are symmetrically arranged; a locking pin (23) is fixed to the end of the elastic member (22), and the locking pin (23) is slidably arranged in the middle of the support member (21); a first magnetic block (24) is fixed to the end of the locking pin (23); a second inner groove (25) is opened in the middle of the top plate (15), and the second inner groove (25) and the end of the locking pin (23) are shaped to match; a second magnetic block (26) is fixed to the inner wall of the second inner groove (25), and the second magnetic block (26) and the first magnetic block (24) are attracted to each other.

3. A telescopic pit edge protection railing as described in claim 2, characterized in that: A fixing frame (3) is fixedly connected to the outer wall of the frame plate (2); a sliding rod (31) is slidably connected to the middle of the fixing frame (3), and the end of the sliding rod (31) is fixedly connected to the top of a set of locking pins (23); a pull rope (32) is fixedly connected to the other end of the sliding rod (31), and the pull rope (32) is through the middle of the frame plate (2); the end of the pull rope (32) is fixedly connected to the bottom of another set of locking pins (23).

4. A telescopic pit edge protection railing as described in claim 3, characterized in that: A conduit (4) is fixedly connected to the middle of the frame plate (2), and the conduit (4) is U-shaped; two sets of gaskets (41) are fixedly connected to the top of the conduit (4); the pull rope (32) is slidably connected to the inner wall of the conduit (4).

5. A telescopic pit edge protection railing as described in claim 1, characterized in that: Two sets of extrusion plates (5) are fixedly connected to the middle of the first guardrail (1); two sets of elastic sheets (51) are fixedly connected to the outer wall of the second guardrail (13), and the elastic sheets (51) and the extrusion plates (5) are arranged in a plane.

6. A telescopic pit edge protection railing as described in claim 1, characterized in that: The first inner groove (16) has a guide groove (6) at its end, and the inner wall of the guide groove (6) is inclined.

7. A telescopic pit edge protection railing as described in claim 3, characterized in that: A friction pad (7) is fixedly connected to the middle of the slide rod (31).

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