Groove supporting device

Abstract

The utility model discloses a groove supporting device which comprises breast boards for supporting the side wall of a groove and a supporting assembly for supporting the breast boards on the two opposite sides, the supporting assembly comprises two supporting rods, and the middles of the two supporting rods are rotationally connected through a middle shaft hinge. The middle shaft hinges of every two vertically-adjacent supporting assemblies are connected through a distance adjusting mechanism, and the adjacent ends of the supporting rods of every two vertically-adjacent supporting assemblies are rotationally connected. The supporting rods which are connected together through the hinge are used as supporting assemblies between the soil retaining plates, and the supporting distance between the soil retaining plates can be conveniently adjusted by adjusting the included angle between the two supporting rods.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering construction equipment, in particular to a trench supporting device. Background Art

[0002] Urban pipeline (ditch) projects are an important part of municipal infrastructure, and trench excavation is an indispensable task. However, the safety hazards of shallow buried trench construction with an excavation depth of less than 3 meters are often the most easily neglected. According to statistics, in recent years, there have been many engineering accidents caused by pipeline (ditch) trench construction, resulting in trench slope collapse, pipeline damage, road collapse and instability, etc. It is an important requirement to reduce construction risks to select a safe and economical trench slope support system and handle engineering problems during excavation and support. For this purpose, support devices are required for support. The support device usually includes retaining plates and support members supported between the retaining plates. The length of the support member determines the support spacing. For this reason, different widths of trenches require different support members, making the device inconvenient to use. Utility Model Content

[0003] In order to solve the problem of poor adaptability of existing supporting devices, the utility model proposes a trench supporting device with a support member with adjustable length, so that the device can be adapted to the use of trench construction with different widths.

[0004] The technical solution adopted by the utility model is to design a trench support device, including a retaining plate supporting the trench side wall and a support assembly supporting the retaining plate on opposite sides, the support assembly including two support rods, the middle parts of the two support rods are rotatably connected by a middle axis hinge, the middle axis hinges of the upper and lower adjacent support assemblies are connected by a spacing adjustment mechanism, and the adjacent ends of the support rods of the upper and lower support assemblies are rotatably connected.

[0005] In some embodiments, the retaining plate is provided with a vertical positioning groove that is slidably matched with the end of the support rod.

[0006] In some embodiments, a positioning block supported on the positioning groove is provided at the end of the support rod, and the positioning block is rotatably connected to the end of the support rod.

[0007] In some embodiments, the spacing adjustment mechanism includes a telescopic cavity connected to the lower middle axis hinge and a telescopic rod connected to the upper middle axis hinge, the telescopic rod and the telescopic cavity are telescopically matched, and a one-way locking mechanism is arranged between the telescopic rod and the telescopic cavity, the one-way locking mechanism includes a ratchet arranged along the length direction of the telescopic rod and a locking head arranged on the edge of the telescopic cavity and facing the telescopic rod, and the locking head is controlled by the telescopic mechanism to be extended and retracted relative to the telescopic rod.

[0008] In some embodiments, adjacent ends of the support rods of the upper and lower support assemblies are rotatably connected to the same sliding block.

[0009] In some embodiments, a base supporting the ground is provided at the bottom of the telescopic cavity.

[0010] In some embodiments, the end of the locking head is provided with a guide inclined surface corresponding to the ratchet inclined surface, and a guide roller is provided on the guide inclined surface.

[0011] In some embodiments, the telescopic mechanism includes a guide cavity, the locking head is telescopically disposed in the guide cavity, and an elastic reset member is supported between the locking head and the guide cavity.

[0012] In some embodiments, a manual pull rod is provided on the locking head.

[0013] In some embodiments, the positioning groove is a sliding groove, and the positioning block is slidably engaged in the sliding groove.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model utilizes support rods connected together by hinges as support components between earth retaining plates. By adjusting the angle between the two support rods, the support spacing of the earth retaining plates can be conveniently adjusted. When the two earth retaining plates move to both sides, the hinge spacing of the middle axes of the upper and lower support components becomes smaller, so that the telescopic rods are extended into the telescopic cavity, so that the two ends of the support rods always press against the earth retaining plates to maintain the supporting effect on the earth retaining plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is described in detail below in conjunction with specific embodiments and drawings. In order to show details and facilitate understanding of its principles, it is not necessarily drawn to scale, and similar reference numerals may describe similar components in different views. The drawings generally illustrate the embodiments discussed herein by way of example and not limitation. Among them:

[0017] Figure 1 is a schematic diagram of an embodiment.

[0018] Figure 2 It is a schematic diagram of a one-way locking mechanism.

[0019] Figure 3 yes Figure 2 An enlarged schematic diagram of point A in FIG.

[0020] In the figure, 1. support rod; 2. middle shaft hinge; 3. positioning block; 4. earth retaining plate; 5. positioning groove; 6. telescopic cavity; 7. telescopic rod; 8. ratchet; 9. slider; 10. locking head; 11. telescopic cavity; 12. base; 13. elastic reset member; 14. guide roller; 15. manual pull rod; 16. guide notch; 17. end shaft hinge. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention, and the technical solution of the present invention is further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments, and the following embodiments do not limit the utility model involved in the claims. In addition, all combinations of the features described in the embodiments are not necessarily required for the solution of the utility model.

[0022] The principle and structure of the present utility model are described in detail below with reference to the accompanying drawings and embodiments. Example

[0023] like Figure 1 , 2 As shown in FIG. 3 , a trench supporting device includes a retaining plate 4 for supporting the side wall of the trench and a supporting assembly for supporting the retaining plate 4 on opposite sides of the trench.

[0024] The support assembly includes two support rods 1, and the middle parts of the two support rods 1 are rotatably connected through a middle axis hinge 2, so that the angle between the two support rods 1 is adjustable.

[0025] The middle shaft hinges of the two upper and lower adjacent support assemblies are connected via a spacing adjustment mechanism, and the adjacent ends of the support rods of the two upper and lower support assemblies are rotatably connected.

[0026] The adjacent ends of the support rods of the upper and lower support assemblies are rotatably connected to the same slider 9.

[0027] The retaining plate is provided with a vertical positioning groove which is slidably matched with the end of the support rod.

[0028] The end of the support rod 1 is provided with a positioning block 3 supported on the positioning groove 5, and the retaining plate 4 is provided with a vertical positioning groove 5, that is, the positioning groove 5 is arranged up and down, so that the positioning block 3 can move up and down along the positioning groove 5.

[0029] The positioning groove 5 is a slide groove, and the positioning block 3 is slidably fitted in the slide groove, so that the positioning block can slide in the slide groove but cannot fall out of the slide groove, that is, the slide groove is slidably fitted with the slider to facilitate the support rod 1 to move up and down along the slide groove.

[0030] The positioning block 3 is rotatably connected to the end of the support rod 1 via an end shaft hinge 17, so that no matter how the angle of the support rod 1 is adjusted, the positioning block 3 can stably support the positioning groove 5.

[0031] The adjacent ends of the support rods of the upper and lower support assemblies are rotatably connected to the same sliding block.

[0032] The spacing adjustment mechanism includes a telescopic cavity 6 connected to the lower middle axis hinge and a telescopic rod 7 connected to the upper middle axis hinge. The telescopic rod and the telescopic cavity are telescopically matched. A one-way locking mechanism is arranged between the telescopic rod and the telescopic cavity. The one-way locking mechanism includes a ratchet 8 arranged along the length direction of the telescopic rod and a locking head 10 arranged on the edge of the telescopic cavity and facing the telescopic rod. The locking head is controlled by the telescopic mechanism to extend and retract relative to the telescopic rod. The one-way locking mechanism allows the telescopic rod to extend downward into the telescopic cavity 11, but cannot extend upward under the locking action of the locking head. In this way, when the two retaining plates move to both sides, the spacing between the middle axis hinges of the upper and lower support assemblies becomes smaller, that is, the telescopic rod is extended into the telescopic cavity, so that the two ends of the support rod always press against the retaining plate to maintain the supporting effect on the retaining plate.

[0033] A base 12 supporting the ground is arranged at the bottom of the telescopic cavity so as to provide a certain support to the telescopic cavity and prevent the telescopic cavity from moving downward.

[0034] The telescopic mechanism includes a guide cavity, the locking head is telescopically arranged in the guide cavity, an elastic reset member 13 is supported between the locking head and the guide cavity, the elastic force of the elastic reset member keeps the locking head pressed against the ratchet, and the elastic reset member is a reset spring. A guide slope corresponding to the ratchet slope is arranged at the end of the locking head, and a guide roller 14 is arranged on the guide slope to reduce the contact resistance between the ratchet and the locking head.

[0035] The locking head is provided with a manual pull rod 15, and the guide cavity is provided with a guide slot. The manual pull rod is slidably engaged with the guide slot 16. By manually pulling the manual pull rod, the locking head can overcome the elastic force of the reset spring and retract into the guide cavity, so that the locking head leaves the ratchet. At this time, the telescopic rod can be extended from the telescopic cavity, so that the positioning block leaves the earth retaining plate.

[0036] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described, or replace them in similar ways, without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A trench support device, comprising a retaining plate for supporting the trench sidewall and a support assembly for supporting the retaining plates on opposite sides, characterized in that: The support assembly includes two support rods, the middle parts of the two support rods are rotatably connected by a middle axis hinge, the middle axis hinges of the two adjacent support assemblies are connected by a spacing adjustment mechanism, and the adjacent ends of the support rods of the upper and lower support assemblies are rotatably connected.

2. The trench support device according to claim 1, characterized in that: The retaining plate is provided with a vertical positioning groove which is slidably matched with the end of the support rod.

3. The trench support device according to claim 2, characterized in that: The end of the support rod is provided with a positioning block supported on the positioning groove, and the positioning block is rotatably connected to the end of the support rod.

4. The trench support device according to claim 1, characterized in that: The spacing adjustment mechanism includes a telescopic cavity hingedly connected to the lower middle axis and a telescopic rod hingedly connected to the upper middle axis, the telescopic rod and the telescopic cavity are telescopically matched, a one-way locking mechanism is arranged between the telescopic rod and the telescopic cavity, the one-way locking mechanism includes a ratchet arranged along the length direction of the telescopic rod and a locking head arranged on the edge of the telescopic cavity and facing the telescopic rod, and the locking head is controlled by the telescopic mechanism to be telescopically extended relative to the telescopic rod.

5. The trench support device according to claim 1, characterized in that: The adjacent ends of the support rods of the upper and lower support assemblies are rotatably connected to the same sliding block.

6. The trench support device according to claim 4, characterized in that: A base supporting the ground is arranged at the bottom of the telescopic cavity.

7. The trench support device according to claim 4, characterized in that: The end of the locking head is provided with a guide inclined surface corresponding to the ratchet inclined surface, and a guide roller is provided on the guide inclined surface.

8. The trench support device according to claim 4, characterized in that: The telescopic mechanism comprises a guide cavity, the locking head is telescopically arranged in the guide cavity, and an elastic reset member is supported between the locking head and the guide cavity.

9. The trench support device according to claim 8, characterized in that: A manual pull rod is arranged on the locking head.

10. The trench support device according to claim 3, characterized in that: The positioning groove is a sliding groove, and the positioning block is slidably engaged in the sliding groove.

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