Detachable duct piece mold hand hole box

Abstract

The utility model relates to the technical field of duct piece molds, and particularly discloses a detachable duct piece mold hand hole box which comprises a mold steel plate, a plurality of hand hole box assemblies are detachably installed on the surface of the mold steel plate, installation grooves are formed in the connecting positions of the hand hole box assemblies and the mold steel plate, and positioning nuts are welded in the installation grooves. The interior of the positioning nut is in threaded connection with a fixing screw rod; the hand hole box assembly comprises a hand hole box body movably installed on the mold steel plate, a detachable supporting plate is installed in the hand hole box body, the middle of the supporting plate is fixedly connected with an installation nut in threaded connection with the fixing screw rod, and the hand hole box assembly further comprises an installation sliding groove formed in the connecting position of the hand hole box body and the supporting plate. And a mounting sliding block is mounted in the mounting sliding groove in a sliding manner. The hand hole box can be detached from the die steel plate, the hand hole box and concrete are directly separated from the die steel plate, and then the concrete and the hand hole box are separated.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe segment molds, in particular to a detachable pipe segment mold hand hole box. Background Art

[0002] Segment molds are made of mold steel and consist of a base plate, four side plates, and two upper covers. These are specialized precast concrete molds used for tunnel segment production. During shield tunnel construction, segments may develop defects, breakage, or insecure installation, requiring repair or replacement. Furthermore, after segment placement, ventilation and grouting operations are also required. Without handhole boxes, these operations would be extremely difficult. Therefore, the installation of handhole boxes facilitates construction workers' inspection, repair, ventilation, and grouting operations, thereby improving construction efficiency and quality.

[0003] Currently, most of the hand hole boxes are welded to the segment mold plate. When demoulding, the hand hole box on the segment mold plate and the concrete are separated from each other as a whole.

[0004] However, with this hand hole box structure, if the demoulding angle of the hand hole box is insufficient, the concrete may not be separated from the hand hole box normally, thus causing demoulding failure. Summary of the Invention

[0005] The purpose of the present utility model is to provide a detachable hand hole box for a pipe segment mold, which can be removed from the mold steel plate, and the hand hole box can be directly separated from the mold steel plate together with the concrete, and then the concrete and the hand hole box can be separated to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a detachable segment mold hand hole box, comprising a mold steel plate, a plurality of groups of hand hole box assemblies being detachably mounted on the surface of the mold steel plate, and a mounting groove being formed at the connection between the hand hole box assemblies and the mold steel plate, a positioning nut being welded inside the mounting groove, and a fixing screw being threadedly connected to the interior of the positioning nut;

[0007] The hand hole box assembly includes a hand hole box body movably mounted on the mold steel plate, a detachable support plate is installed inside the hand hole box body, and a mounting nut threadedly connected to the fixing screw is fixedly connected to the middle of the support plate.

[0008] Preferably, the hand hole box assembly further comprises a mounting slot provided at the connection between the hand hole box body and the support plate, and a mounting slider is slidably mounted inside the mounting slot.

[0009] Preferably, the mounting slide blocks are fixed on both sides of the support plate, and a support piece welded to the inner wall of the hand hole box body is provided in parallel on the top of the support plate.

[0010] Preferably, the internal thread of the mounting slider is connected with a connecting screw, and the connecting screw passes through the mounting slider and is threadedly connected with the mounting slot.

[0011] Preferably, a protective rubber pad coinciding with the axis of the mounting nut is further provided inside the hand hole box body, and a core rod through-hole for mounting a core rod is provided on the hand hole box body.

[0012] Preferably, a limiting bracket is provided on the outside of the fixing screw, and a rubber gasket is provided at the connection between the fixing screw and the limiting bracket.

[0013] Preferably, the end of the fixing screw is configured as a hexagonal head, and the hexagonal head and the fixing screw are integrally formed.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The mounting nut and positioning nut are provided to allow the hand hole box assembly to be mounted on the mold steel plate under the action of the fixing screw. When demoulding, the fixing screw can be directly rotated to separate the fixing screw and the mounting nut from each other, so that the hand hole box can be automatically demoulded along with the pipe segment, solving the problem of insufficient demoulding angle for the hand hole box;

[0016] 2. The support plate can be disassembled under the action of the connecting screws. When the thread in the mounting nut is damaged, the support plate can be replaced with a new mounting nut to ensure the normal use of the hand hole box assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is the overall structural view of the utility model;

[0019] Figure 2 This is a structural diagram of the hand hole box body of the utility model;

[0020] Figure 3 For the utility model Figure 2 A magnified view of middle A;

[0021] Figure 4 This is a schematic diagram of the half-section structure of the hand hole box body of the present utility model.

[0022] Description of reference numerals:

[0023] 1. Mold steel plate; 2. Hand hole box assembly; 201. Hand hole box body; 202. Core rod perforation; 203. Mounting slide; 204. Support plate; 205. Mounting nut; 206. Mounting slider; 207. Connecting screw; 208. Support piece; 209. Protective rubber pad; 3. Mounting slot; 4. Positioning nut; 5. Fixing screw; 6. Limit bracket. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The utility model provides a technical solution:

[0026] See also Figures 1 to 4 A detachable segment mold hand hole box comprises a mold steel plate 1, on the surface of which several groups of hand hole box assemblies 2 are detachably mounted, and a mounting groove 3 is provided at the connection between the hand hole box assembly 2 and the mold steel plate 1, a positioning nut 4 is welded inside the mounting groove 3, and a fixing screw 5 is connected to the internal thread of the positioning nut 4, a limiting bracket 6 is provided outside the fixing screw 5, and a rubber gasket is provided at the connection between the fixing screw 5 and the limiting bracket 6, the end of the fixing screw 5 is provided with a hexagonal head, and the hexagonal head and the fixing screw 5 are integrally formed;

[0027] The hand hole box assembly 2 includes a hand hole box body 201 movably mounted on the mold steel plate 1 , a detachable support plate 204 is mounted inside the hand hole box body 201 , and a mounting nut 205 threadedly connected to the fixing screw 5 is fixedly connected to the middle of the support plate 204 .

[0028] By adopting the above technical solution, the hand hole box assembly 2 is placed in the installation groove 3 of the mold steel plate 1, and the axes of the positioning nut 4 and the mounting nut 205 are coincident with each other, so that the fixing screw 5 can fix the positioning nut 4 and the mounting nut 205. The fixing screw 5 is inserted into the positioning nut 4 from the outside of the mold steel plate 1 and threadedly connected with the positioning nut 4. After passing through the positioning nut 4, it enters the mounting nut 205 and is threadedly connected with the mounting nut 205 on the hand hole box assembly 2 to realize the installation of the hand hole box assembly 2. After the mold is closed, concrete is poured into the mold. After oscillation and solidification, the fixing screw 5 can be directly rotated to separate the fixing screw 5 and the mounting nut 205 from each other. At this time, the hand hole box can be automatically demoulded along with the pipe segment, which solves the problem that the demoulding angle of the hand hole box is not enough and cannot be demoulded normally.

[0029] Specifically, such as Figure 3 and Figure 4 As shown, the hand hole box assembly 2 also includes a mounting groove 203 provided at the connection between the hand hole box body 201 and the support plate 204, and a mounting slider 206 is slidably installed inside the mounting groove 203, and the mounting slider 206 is fixed on both sides of the support plate 204, and a support member 208 welded to the inner wall of the hand hole box body 201 is provided in parallel on the top of the support plate 204, and the internal thread of the mounting slider 206 is connected with a connecting screw 207, and the connecting screw 207 passes through the mounting slider 206 and is threadedly connected to the mounting groove 203.

[0030] A protective rubber pad 209 coinciding with the axis of the mounting nut 205 is further provided inside the hand hole box body 201 , and a core rod through hole 202 for mounting a core rod is provided on the hand hole box body 201 .

[0031] By adopting the above technical solution, mounting sliders 206 are provided on both sides of the support plate 204, and mounting grooves 203 are opened on the inner walls of the side edges parallel to each other of the hand hole box body 201. The mounting sliders 206 are fixed inside the mounting grooves 203 using connecting screws 207. The length of the mounting grooves 203 is adapted to the position of the support members 208. The support plate 204 cannot continue to slide after being fitted with the support members 208, which facilitates the replacement of damaged mounting nuts 205 and ensures the stability of the mounting nuts 205 when connected to the fixing screw 5. The protective rubber pad 209 on one side of the mounting nut 205 can prevent the fixing screw 5 from excessively penetrating the mounting nut 205, thereby causing deformation of the hand hole box body 201. The core rod through-hole 202 provided in the hand hole box body 201 can be used for normal installation of the core rod.

[0032] Working principle: the hand hole box assembly 2 is placed in the mounting groove 3 of the mold steel plate 1, and the axes of the positioning nut 4 and the mounting nut 205 coincide with each other. A limiting bracket 6 is sleeved on the outside of the fixing screw 5, and the end of the limiting bracket 6 is pressed against the mold steel plate 1 and a rubber gasket can be provided on its contact surface. The fixing screw 5 is inserted into the positioning nut 4 from the outside of the mold steel plate 1 and threadedly connected with it, enters the mounting nut 205, and is threadedly connected with the mounting nut 205 on the hand hole box assembly 2 to realize the installation of the hand hole box assembly 2. After the mold is closed, concrete is poured into the mold. After oscillation and solidification, the fixing screw 5 can be directly rotated to separate the fixing screw 5 and the mounting nut 205 from each other. The connecting screw 207 can fix the mounting slider 206 inside the mounting slide 203. The length of the mounting slide 203 is adapted to the position of the support 208. After the support plate 204 is attached to the support 208, the support plate 204 cannot continue to slide, which is convenient for replacing the damaged mounting nut 205.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detachable segment mold hand hole box, comprising a mold steel plate (1), characterized in that: A plurality of hand hole box assemblies (2) are detachably mounted on the surface of the mold steel plate (1), and a mounting groove (3) is provided at the connection between the hand hole box assemblies (2) and the mold steel plate (1), a positioning nut (4) is welded inside the mounting groove (3), and a fixing screw (5) is connected to the internal thread of the positioning nut (4); The hand hole box assembly (2) comprises a hand hole box body (201) movably mounted on the mold steel plate (1), a detachable support plate (204) being mounted inside the hand hole box body (201), and a mounting nut (205) threadedly connected to the fixing screw (5) being fixedly connected to the middle portion of the support plate (204).

2. The detachable segment mold hand hole box according to claim 1, characterized in that: The hand hole box assembly (2) further comprises a mounting slot (203) provided at the connection between the hand hole box body (201) and the support plate (204), and a mounting slider (206) is slidably mounted inside the mounting slot (203).

3. The detachable segment mold hand hole box according to claim 2, characterized in that: The mounting slide blocks (206) are fixed on both sides of the support plate (204), and a support member (208) welded to the inner wall of the hand hole box body (201) is provided parallel to the top of the support plate (204).

4. The detachable segment mold hand hole box according to claim 3, characterized in that: The internal thread of the installation slider (206) is connected with a connecting screw (207), and the connecting screw (207) passes through the installation slider (206) and is threadedly connected to the installation slot (203).

5. The detachable segment mold hand hole box according to claim 4, characterized in that: The interior of the hand hole box body (201) is further provided with a protective rubber pad (209) that coincides with the axis of the mounting nut (205), and the hand hole box body (201) is provided with a core rod through hole (202) for mounting a core rod.

6. The detachable segment mold hand hole box according to claim 5, characterized in that: A limiting bracket (6) is provided outside the fixing screw (5), and a rubber gasket is provided at the connection between the fixing screw (5) and the limiting bracket (6).

7. The detachable segment mold hand hole box according to claim 6, characterized in that: The end of the fixing screw (5) is provided with a hexagonal head, and the hexagonal head and the fixing screw (5) are integrally formed.

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