Precast block demolding device

Abstract

The utility model belongs to the technical field of concrete precast block production, and particularly relates to a precast block demolding device. Comprising a rectangular frame, a telescopic piece arranged at the front end of the rectangular frame, a U-shaped rocker arm with the front end located on the outer side of the rectangular frame and hinged to the rectangular frame, a limiting strip arranged in the bottom of the rear end of the rectangular frame and a transmission piece connected with the limiting strip. According to the utility model, the limiting strip and the transmission part are specifically arranged, so that the precast block mold can be quickly limited without the help of an external rod piece, the design is ingenious, and the demolding efficiency is favorably improved. Besides, the relative position relation of the front limiting arm and the rocker arm can be adjusted according to needs, the rear supporting leg can collide with the ground to generate impact, the front supporting leg can collide with the ground to generate impact, and the demolding effect can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of concrete precast block production, and particularly relates to a precast block demolding device. BACKGROUND

[0002] In the production and manufacturing of concrete precast blocks, corresponding precast block molds are currently used for production. Concrete is poured into the precast block molds, a vibrating rod is used for vibration, and curing is carried out. After the concrete solidifies and the precast block components reach the required strength, manual demolding is performed. However, when the precast block and the precast mold are large, manual demolding is inconvenient, especially when there is a large frictional resistance between the precast block and the precast mold, which increases the difficulty of demolding.

[0003] In the prior art, there are related devices for precast block demolding. For example, CN216465296U discloses a precast cover plate overturning demolding device, which includes front legs and rear legs. Each leg is connected by a lower frame beam and an upper frame beam to form a frame structure that is adapted to the shape of the mold. The rear side of the prime number rear leg is fixed with an arc-shaped rocker rail for supporting and overturning the frame structure. The lower frame beam is located in the middle of the leg, and the left and right sides of the frame structure are provided with a rocking handle. The frame structure formed by the connection of the leg and the frame beam can clamp the mold therein, so that the mold moves with the frame structure. The rear side of the rear leg is fixed with an arc-shaped rocker rail. During the overturning process, the arc-shaped rocker rail contacts the ground, which can effectively reduce the force required for overturning the mold. The precast cover plate overturning demolding device disclosed in the patent uses the principle of leverage to overturn the mold with less force, achieving the effect of saving labor. In addition, by pulling the rocking handle, the mold shakes with the demolding device, and the impact force caused by the collision of the demolding device with the ground makes the precast cover plate and the mold loose, achieving the demolding effect.

[0004] It is undeniable that the precast cover plate overturning demolding device disclosed in the patent can achieve the above effects, but it still has some shortcomings. After overturning the mold, a limiting rod needs to be inserted into the front side of the upper frame beam to limit the mold. After demolding is completed, the limiting rod needs to be removed again. The removed limiting rod cannot be placed randomly for the next demolding, which is inconvenient to operate and may affect the demolding efficiency to some extent. In addition, when demolding by pulling the rocking handle and using the impact force caused by the collision of the demolding device with the ground, the rocking handle abuts against the top of the rear arm, which separates the front leg from the ground. The subsequent collision of the front leg with the ground generates an impact force, which helps the precast cover plate and the mold at the position of the front leg to loosen, but the demolding effect at the position of the rear leg is poor.

[0005] The information disclosed in this BACKGROUND section is only intended to increase an understanding of the general background of the present utility model and is not intended to be a recognition or a suggestion that this information forms a prior art that is already known to those of ordinary skill in the art. SUMMARY

[0006] The utility model discloses a prefabricated block demoulding device to solve the problem of the prefabricated cover plate turnover demoulding device in the background art.

[0007] To achieve the above object, the utility model provides the following technical scheme:

[0008] A prefabricated block demoulding device, comprising:

[0009] The bottom of the rectangular frame is fixed with a limiting groove on both sides and the front side, and the slot of the limiting groove faces inwards; the front end of the rectangular frame is fixed with a front support leg at both top corners, and the rear end is fixed with a rear support leg at both top corners; the front side of the front support leg is welded with an arc-shaped rocking rail; the top outside of the rear support leg is vertically fixed with a rear limiting arm;

[0010] The telescopic piece arranged at the front end of the rectangular frame comprises a fixed tube fixed at the middle part of the front side of the front support leg and a front limiting arm inserted into both ends of the fixed tube; wherein, a push rod is welded at the middle position of the top of the front limiting arm, and a sliding groove corresponding to the push rod is formed in the top of the fixed tube;

[0011] The "U"-shaped rocker arm is arranged at the front end outside the rectangular frame and is hinged with the rectangular frame;

[0012] The limiting strip is arranged in the bottom of the rear end of the rectangular frame;

[0013] The transmission member is arranged at the top of the rear end of the rectangular frame and is connected with the limiting strip; after the rectangular frame is turned over, the transmission member pushes the limiting strip out of the rectangular frame.

[0014] As a preferred, when the push rod is located at the inner end position of the sliding groove, the outer end of the front limiting arm enters the fixed tube; when the push rod is located at the outer end position of the sliding groove, the outer end of the front limiting arm extends out and blocks the rocker arm in the turnover process.

[0015] As a preferred, both sides of the rectangular frame are hollow structures, the rear support leg is provided with a through hole communicated with the internal hollow structure of the rectangular frame; the rear support leg is provided with a giving slot corresponding to the limiting groove of both sides of the rectangular frame.

[0016] As a preferred, the rear end of the rectangular frame is concave with a containing groove corresponding to the limiting strip.

[0017] As preferred, the transmission member comprises a fixed plate fixedly connected to the rear supporting leg near the top position, a connecting plate above the fixed plate, a plurality of limiting cylinders fixedly connected to the top of the fixed plate and the top of the rear end of the rectangular frame, a plurality of limiting rods fixedly connected to the connecting plate at the top and sequentially penetrating through the fixed plate, the limiting cylinder and the rear of the rectangular frame and fixedly connected to the limiting strip, and a reset spring sleeved on the limiting rod and abutting against the connecting plate at the top and the fixed plate at the top; wherein the top of the connecting plate is higher than the top of the rear supporting leg, and the reset spring is in a compressed state.

[0018] As preferred, the rectangular frame is fixed with a pin shaft at the middle of the two sides, and the front end of the rocker arm is welded with a shaft sleeve, which is sleeved on the pin shaft and rotationally matched with the pin shaft.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] (1) The utility model discloses a limiting strip is arranged in the rectangular frame bottom, and the transmission member connected therewith is arranged. When the transmission member does not contact the ground, the limiting strip is located in the containing groove in the rectangular frame bottom, and the limiting strip hinders the prefabricated block mold flanging into the containing groove. When the rectangular frame is turned over to the inverted state, the connecting plate contacts the ground first, the connecting plate exerts pressure on the reset spring, the reset spring is further compressed, the limiting rod slides in the limiting cylinder and pushes the limiting strip out of the containing groove, and the limiting rod limits the prefabricated block. It can be seen that the application can realize the rapid limiting of the prefabricated block mold by the specific arrangement of the limiting strip and the transmission member without the aid of external rods, and the design is ingenious, which helps to improve the demolding efficiency.

[0021] (2) The utility model discloses a telescopic piece comprising a front limiting arm, and the relative position relationship between the front limiting arm and the rocker arm can be adjusted according to needs, so that the rear supporting leg and the ground can collide and impact, and the front supporting leg and the ground can collide and impact, which helps the prefabricated block at the position of the supporting leg and the rear supporting leg to be demolded, and the demolding effect can be improved. ACCURACY OF DRAWINGS

[0022] Figure 1 It is a structure diagram of the prefabricated block mold.

[0023] Figure 2 It is a whole mechanism schematic view of the utility model.

[0024] Figure 3 It is Figure 2 It is an enlarged view of the middle A.

[0025] Figure 4 It is Figure 2 It is an enlarged view of the middle B.

[0026] Figure 5 for Figure 2 The left view;

[0027] Figure 6 This is a diagram showing the rectangular frame in its upright position.

[0028] Figure 7 for Figure 6 The main view;

[0029] Figure 8 This is a diagram showing the rectangular frame in an inverted position.

[0030] Figure 9 for Figure 8 Enlarged view of point C in the middle;

[0031] Figure 10 This is a schematic diagram of the front limiting arm of this utility model.

[0032] Explanation of key figure labels:

[0033] 10. Rectangular frame; 11. Limiting groove; 12. Front support foot; 13. Rear support foot; 131. Through hole; 132. Clearance groove; 14. Arc-shaped rocker rail; 15. Rear limiting arm; 16. Pin; 17. Receiving groove;

[0034] 20. Telescopic component; 21. Fixed tube; 211. Sliding groove; 22. Front limit arm; 221. Toggle lever;

[0035] 30. Rocker arm; 31. Bushing; 32. Reinforcing rod;

[0036] 40. Limiting strip;

[0037] 50. Transmission component; 51. Fixing plate; 52. Connecting plate; 53. Limiting cylinder; 54. Limiting rod; 55. Return spring;

[0038] 60. Precast block mold; 61. Flanging. Detailed Implementation

[0039] The technical solution of this utility model patent will be clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0040] Example

[0041] See appendix Figures 1-10 A precast block demolding device, comprising:

[0042] The rectangular frame 10, the two sides and the front side of the bottom of the rectangular frame 10 are fixed with a limiting groove 11, the slot of the limiting groove 11 is inward, it is necessary to supplement here is that the limiting groove 11 adopts channel steel, the web of the channel steel is outward; The front end of the rectangular frame 10 is fixed with a front support leg 12 at two top corners, the rear end of the rectangular frame 10 is fixed with a rear support leg 13 at two top corners; The front side of the front support leg 12 is welded with an arc-shaped rocker 14; The top outside of the rear support leg 13 is vertically fixed with a rear limiting arm 15;

[0043] The telescopic piece 20 is arranged at the front end of the rectangular frame 10, the telescopic piece 20 includes a fixed tube 21 fixed at the middle part of the front side of the front support leg 12 of the two sides of the rectangular frame 10 and a front limiting arm 22 inserted into the two ends of the fixed tube 21, in the embodiment, one front limiting arm 22 is inserted into each end of the fixed tube 21; Wherein, a push rod 221 is welded at the middle position of the top of the front limiting arm 22, a sliding groove 211 corresponding to the push rod 221 is formed in the top of the fixed tube 21;

[0044] The "U"-shaped rocker 30 is located outside the rectangular frame 10 and is hinged with the rectangular frame 10, specifically, the middle part of the two sides of the rectangular frame 10 is fixed with a pin shaft 16, the front end of the rocker 30 is welded with a shaft sleeve 31, the shaft sleeve 31 is sleeved on the pin shaft 16 and is in rotating cooperation with the pin shaft 16, in order to improve the stability of the rocker 30, the middle part of the rocker 30 is welded with a reinforcing rod 32; When the push rod 221 is located at the inner end position of the sliding groove 211, the outer end of the front limiting arm 22 enters the fixed tube 21, at this time, the front limiting arm 22 will not block the rocker 30 in the process of turning over; When the push rod 221 is located at the outer end position of the sliding groove 211, the outer end of the front limiting arm 22 extends out of the fixed tube 21 and blocks the rocker 30 in the process of turning over;

[0045] The limiting strip 40 is arranged in the bottom of the rear end of the rectangular frame 10, specifically, the bottom of the rear end of the rectangular frame 10 is recessed with a containing groove 17 corresponding to the limiting strip 40; The top of the limiting strip 40 is chamfered at four edges;

[0046] A transmission member 50 is arranged at the top of the rear end of the rectangular frame 10 and connected with the limiting strip 40; after the rectangular frame 10 is turned over, the transmission member 50 pushes the limiting strip 40 out of the rectangular frame 10; specifically, the transmission member 50 comprises a fixed plate 51 fixedly connected at the position close to the top of the rear support leg 13, a connecting plate 52 arranged above the fixed plate 51, a plurality of limiting cylinders 53 fixedly connected at the top of the fixed plate 51 and at the bottom of the rear end of the rectangular frame 10, a plurality of limiting rods 54 fixedly connected at the top of the connecting plate 52 and sequentially penetrating through the fixed plate 51, the limiting cylinders 53 and the rectangular frame 10 at the bottom and fixedly connected with the limiting strip 40, and a reset spring 55 sleeved on the limiting rod 54 and abutting against the connecting plate 52 at the top and abutting against the fixed plate 51 at the bottom; wherein the top of the connecting plate 52 is higher than the top of the rear support leg 13, and the reset spring 55 is in a compressed state.

[0047] In the embodiment, the two sides of the rectangular frame 10 are hollow structures, and the rear support leg 13 is provided with a penetrating hole 131 communicated with the hollow structure inside the rectangular frame 10; the rear support leg 13 is provided with a giving-way slot 132 corresponding to the sliding groove 211 on the two sides of the rectangular frame 10.

[0048] It should be noted here that the structure of the prefabricated block mold 60 is as shown in Figure 1 The prefabricated block mold 60 has a turned-up edge 61 around the top, and when the prefabricated block mold 60 needs to be turned over, the turned-up edges 61 on the two sides and the front side of the prefabricated block mold 60 enter the limiting grooves 11 on the two sides and the front side of the bottom of the rectangular frame 10, so that the prefabricated block mold 60 is limited.

[0049] In the prefabricated block manufacturing process, the concrete is poured into the prefabricated block mold 60, a vibrating rod is used for vibration, and curing is performed; after the concrete is solidified and the prefabricated block component reaches the design strength requirement, demolding can be performed. Figure 1 Referring to the orientation shown inWhen demolding, the prefabricated block mold 60 is located at the rear end of the rectangular frame 10, the rectangular frame 10 is pulled close to the prefabricated block mold 60 by means of the rocker arm 30, the turned-up edge 61 of the prefabricated block mold 60 passes through the giving-way slot 132 on the rear support leg 13 and enters the limiting groove 11. After the prefabricated block mold 60 completely enters, the rocker arm 30 is turned over upward (the rocker arm 30 is turned over in the direction of the arrow), and the rocker arm 30 is rotated and abuts below the rear limiting arm 15. The rocker arm 30 is continuously turned over upward, the rocker arm 30 lifts the rear support leg 13, the rectangular frame 10 is turned over with the rear support leg 12 as the fulcrum, the rectangular frame 10 enters the vertical state in Figure 1 from the horizontal state, and finally enters the inverted state in Figure 6 , in which the prefabricated block mold 60 and the rectangular frame 10 are both in the inverted state; Figure 8 Figure 3

[0050] ​In this turning process, the arc-shaped rail 14 is in contact with the ground, which can not only reduce the force required for turning, but also facilitate the slow transition of the rectangular frame 10 from the vertical state to the inverted state, avoiding causing safety accidents. During the transition of the rectangular frame 10 from the vertical state to the inverted state, the connecting plate 52 will contact the ground first, at which time the connecting plate 52 will generate pressure on the return spring 55, and the return spring 55 will be further compressed. The limiting rod 54 slides in the limiting cylinder 53 and pushes the limiting strip 40 out of the containing groove 17. After the limiting strip 40 is pushed out of the containing groove 17, the limiting strip 40 generates a limiting effect on the precast block mold 60. It is not difficult to understand that, after the connecting plate 52 is separated from the ground, the return spring 55 is stretched to generate a pushing force on the connecting plate 52. Under the action of the pushing force, the connecting plate 52 drives the limiting rod 54 to move downward, and then pulls the limiting strip 40 back into the containing groove 17. Of course, when the connecting plate 52 is not in contact with the ground, the limiting strip 40 is always located in the containing groove 17, so it will not hinder the turning-up edge 61 of the precast block mold 60 entering the limiting groove 11.

[0051] The lever 221 is pushed to the outer end position of the sliding groove 211, at which time the front limiting arm 22 extends out of the fixed tube 21. After the rocker arm 30 is turned counterclockwise by a certain angle, the bottom of the rocker arm 30 abuts against the top of the front limiting arm 22. The end of the rocker arm 30 away from the shaft sleeve 31 is pressed downward, and the rectangular frame 10 at the position of the rear supporting leg 13 is raised upward. Then the rocker arm 30 is released, and the bottom of the rear supporting leg 13 collides with the ground to generate an impact force, which helps to loosen the precast blocks near the position of the rear supporting leg 13 from the precast block mold 60. Of course, at this time, an external lifting lever can also be used to lift the rectangular frame 10 at the position of the rear supporting leg 13 upward. Specifically, two workers hold the external lifting lever, insert the lever through the penetrating hole 131 into the hollow structure on both sides of the rectangular frame 10, then lift the lever upward, and then drop the lever, so that the bottom of the rear supporting leg 13 collides with the ground to generate an impact force. This repeated process can also loosen the precast blocks near the position of the rear supporting leg 13 from the precast block mold 60.

[0052] Then the lever 221 is pushed to the inner end position of the sliding groove 211, and the outer end of the front limiting arm 22 enters the fixed tube 21, and the rocker arm 30 is placed below the fixed tube 21. At this time, the end of the rocker arm 30 away from the shaft sleeve 31 will not be in contact with the ground. Then the lever 221 is pushed to the outer end position of the sliding groove 211, at which time the front limiting arm 22 extends out of the fixed tube 21. The rocker arm 30 is turned upward (the rocker arm 30 is turned clockwise), and the rocker arm 30 rotates and abuts against the lower side of the front limiting arm 22. The rocker arm 30 is continuously turned upward, and the rocker arm 30 lifts the front supporting leg 12. Then the rocker arm 30 is released, and the bottom of the front supporting leg 12 collides with the ground to generate an impact force. This repeated process can loosen the precast blocks near the position of the front supporting leg 12 from the precast block mold 60.

[0053] After the preform block is released from the preform block mold 60, the preform block slides from the opening of the preform block mold 60 under the action of gravity, that is, the demolding operation is completed.

[0054] The foregoing description of the specific exemplary embodiments of the present application is for the purpose of illustrating and describing, not for the purpose of limiting the application. It is clear that many changes and variations can be made according to the above teachings, and it is explicitly contemplated to be within the scope of the application. These examples were chosen and described in order to explain the principles of the application and the practical application, and to enable others skilled in the art to understand the application for various exemplary embodiments with various modifications as are suited to the particular use contemplated. The scope of the application is defined by the following claims and their equivalents.

Claims

1. A precast block stripping apparatus, characterized by, The utility model relates to a kind of rectangular frame, the two sides and front side of the bottom of the rectangular frame are fixed with limiting slot, the slot of the limiting slot is inward;Two top corners of the front end of the rectangular frame are fixed with front support leg, two top corners of the rear end are fixed with rear support leg;The front side of the front support leg is welded with arc-shaped rocker rail;The top outer side of the rear support leg is vertically fixed with a rear limiting arm; The utility model relates to a kind of rectangular frame, the two sides and front side of the bottom of the rectangular frame are fixed with limiting slot, the slot of the limiting slot is inward;Two top corners of the front end of the rectangular frame are fixed with front support leg, two top corners of the rear end are fixed with rear support leg;The front side of the front support leg is welded with arc-shaped rocker rail;The top outer side of the rear support leg is vertically fixed with a rear limiting arm; The utility model relates to a kind of rectangular frame, the two sides and front side of the bottom of the rectangular frame are fixed with limiting slot, the slot of the limiting slot is inward;Two top corners of the front end of the rectangular frame are fixed with front support leg, two top corners of the rear end are fixed with rear support leg;The front side of the front support leg is welded with arc-shaped rocker rail;The top outer side of the rear support leg is vertically fixed with a rear limiting arm; The utility model relates to a kind of rectangular frame, the two sides and front side of the bottom of the rectangular frame are fixed with limiting slot, the slot of the limiting slot is inward;Two top corners of the front end of the rectangular frame are fixed with front support leg, two top corners of the rear end are fixed with rear support leg;The front side of the front support leg is welded with arc-shaped rocker rail;The top outer side of the rear support leg is vertically fixed with a rear limiting arm; When the front limiting arm outer end head is in the fixed pipe when the push rod is located at the sliding groove inner end head position, the front limiting arm outer end head is in the fixed pipe;When the push rod is located at the sliding groove outer end head position, the front limiting arm outer end head is stretched and generates the blocking of rocker arm in the process of turning over. The two sides of the rectangular frame are hollow structure, the rear support leg is provided with the through hole that is communicated with the hollow structure inside the rectangular frame;The rear support leg is provided with the let go slot that is corresponded with the limiting slot of the two sides of the rectangular frame.

2. The preform block stripper as defined in claim 1, wherein, The rear end bottom of the rectangular frame is recessed with the accommodating groove that is corresponded with the limiting strip.

3. The preform block stripper of claim 1, wherein, The utility model relates to a kind of rectangular frame, the two sides and front side of the bottom of the rectangular frame are fixed with limiting slot, the slot of the limiting slot is inward;Two top corners of the front end of the rectangular frame are fixed with front support leg, two top corners of the rear end are fixed with rear support leg;The front side of the front support leg is welded with arc-shaped rocker rail;The top outer side of the rear support leg is vertically fixed with a rear limiting arm; 4. The preform block stripper of claim 1, wherein, The two sides of the rectangular frame are fixed with pin shaft in the middle, the front end of the rocker arm is welded with shaft sleeve, the shaft sleeve is sleeved on the pin shaft and is rotationally cooperated with it.

5. The preform block stripper of claim 1, wherein, The utility model relates to a kind of rectangular frame, the two sides and front side of the bottom of the rectangular frame are fixed with limiting slot, the slot of the limiting slot is inward;Two top corners of the front end of the rectangular frame are fixed with front support leg, two top corners of the rear end are fixed with rear support leg;The front side of the front support leg is welded with arc-shaped rocker rail;The top outer side of the rear support leg is vertically fixed with a rear limiting arm; 6. The preform block stripper of claim 1, wherein, ​

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