Folding hopper

Abstract

The invention discloses a folding hopper, and relates to the technical field of building construction. The hopper sequentially comprises a folding hopper body and a discharging hopper body from top to bottom, the folding hopper body comprises two folding walls arranged side by side, the two ends of the two folding walls are in transition connection through connecting walls respectively, and the bottom ends of the folding walls and the bottom ends of the connecting walls are connected with the discharging hopper body in a sealed mode; a sealing plate used for sealing an opening in the bottom of the discharging hopper is connected to the side wall of the discharging hopper in an inserted mode. The discharging hopper is further provided with two supporting frames, the two supporting frames are hinged to the two sides of the top of the discharging hopper respectively, retainer rods are arranged on the two sides of the two supporting frames, the suspended ends of the retainer rods located on the same side are connected in a hinged mode, and a locking mechanism is arranged between every two corresponding retainer rods. The hopper used for containing concrete is arranged to be of a foldable structure, the overall size of the hopper can be adjusted according to the space requirement of a construction site, and therefore the hopper can conduct concrete pouring operation in a narrow space conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly to a folding hopper. Background Art

[0002] Concrete pouring is a key construction process in building engineering to pour the prepared concrete into the formwork and compact it into shape, and its quality directly affects the strength, durability and integrity of the structure.

[0003] In some concrete pouring scenarios where it is not suitable to use a pump truck (reasons such as small pouring volume, site restrictions, economy, etc., such as the construction of cable trenches, parapets, etc.), the hopper feeding method is usually adopted for concrete pouring. This pouring method can usually meet the requirements of small-volume pouring, construction in narrow spaces, and low-cost pouring.

[0004] The hoppers for pouring concrete in the prior art are of fixed size and are not convenient for adjusting the size of the hopper itself according to the actual space. The hopper cannot be folded and shrunk to reduce its occupied space when not in use. Summary of the Invention

[0005] The purpose of the present invention is to provide a folding hopper to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A folding hopper, which successively includes a folding hopper and a feeding hopper from top to bottom. The folding hopper includes two juxtaposed folding walls, and both ends of the two folding walls are respectively connected by connecting walls through transition. The bottom ends of the folding walls and the connecting walls are hermetically connected to the feeding hopper;

[0007] A sealing plate for plugging the bottom opening of the feeding hopper is inserted on the side wall of the feeding hopper;

[0008] The feeding hopper is also provided with a support frame, and the support frame is composed of two and is respectively hinged to both sides of the top of the feeding hopper. Both sides of the two support frames are provided with retaining frame rods. The suspended ends of the retaining frame rods on the same side are hinged, and a locking mechanism is arranged between the corresponding two retaining frame rods.

[0009] Preferably, a sealing gasket is arranged between the folding wall and the feeding hopper. The top surface of the sealing gasket is hermetically connected to the wrinkled part of the bottom surface of the folding wall, and the bottom surface of the sealing gasket is hermetically connected to the feeding hopper.

[0010] Preferably, the bottom of the connecting wall is provided with a first extension wall extending into the interior of the feeding hopper, and the inner side edge of the sealing gasket is provided with a second extension wall extending into the interior of the feeding hopper.

[0011] Preferably, an avoidance opening for inserting the sealing plate is provided on the side wall of the hopper, and a support plate is provided at the inner wall of the hopper and below the avoidance opening, and the top surface of the support plate coincides with the bottom surface of the avoidance opening.

[0012] Preferably, a handle is further provided on the sealing plate.

[0013] Preferably, the corresponding two cage rods are respectively a first cage rod and a second cage rod. The locking mechanism includes a collar fixedly connected to the first cage rod. A chute parallel to the axis of the collar is provided on the inner wall of the collar. A first positioning disk is slidably arranged in the collar, and a limiting slider matched with the chute is arranged around the first positioning disk. The locking mechanism further includes a second positioning disk fixedly connected to the second cage rod. A connecting shaft is coaxially arranged on the second positioning disk. A shaft hole for the connecting shaft to pass through is arranged on the first positioning disk. First limiting teeth are arranged on the first positioning disk, and second limiting teeth meshing with the first limiting teeth are arranged on the second positioning disk. A spring is arranged between the first positioning disk and the second positioning disk. Threads are arranged on the connecting shaft, and a locking bolt is in threaded connection with the threads on the connecting shaft. The locking bolt is located on the side corresponding to the first positioning disk.

[0014] Preferably, a shaft seat corresponding to the support frame is provided at the top of the hopper, and the bottom of the support frame is rotationally and cooperatively connected to the corresponding shaft seat through a connecting shaft.

[0015] Preferably, a hook is provided at the top of the support frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. In the present invention, the hopper for accommodating concrete is set to a foldable structure, and the overall size of the hopper can be adjusted according to the space requirements of the construction site, so as to facilitate the concrete pouring operation of the hopper in a narrow space.

[0018] 2. In the present invention, the hopper for accommodating concrete is set to a foldable structure. When the cement is not being poured, the folding hopper can be adjusted to the state with the maximum shrinkage amplitude, reducing the occupied space of the entire hopper.

[0019] 3. In the present invention, by adjusting the locking mechanism, the fixed state of the folding hopper can be quickly adjusted. The two cage rods are rotatably connected and cooperate with the locking mechanism to adjust the opening and closing angle between the two cage rods at any time, and at the same time, the functions of adjusting the size of the folding hopper and fixing the angle after adjustment are realized. Description of the Drawings

[0020] Figure 1Structural schematic of the present invention Figure 1 (Folding wall unfolded);

[0021] Figure 2 Structural schematic of the present invention Figure 2 (Folding wall unfolded);

[0022] Figure 3 Structural schematic of the present invention Figure 3 (Folding wall retracted);

[0023] Figure 4 Structural schematic of the folding hopper of the present invention Figure 1 ;

[0024] Figure 5 Structural schematic of the folding hopper of the present invention Figure 2 ;

[0025] Figure 6 Cooperating relationship between the sealing plate and the blanking hopper of the present invention Figure 1 (Sealing plate not inserted into the blanking hopper);

[0026] Figure 7 Cooperating relationship between the sealing plate and the blanking hopper of the present invention Figure 2 (Sealing plate inserted into the blanking hopper);

[0027] Figure 8 Structural schematic diagram of the locking mechanism of the present invention;

[0028] Figure 9 Internal structural schematic diagram of the locking mechanism of the present invention.

[0029] In the figure:

[0030] 11 - Folding wall, 12 - Connecting wall, 121 - First extension wall, 13 - Sealing gasket, 131 - Second extension wall, 2 - Blanking hopper, 21 - Sealing plate, 211 - Handle, 22 - Support plate, 23 - Axle seat, 24 - Avoidance opening, 3 - Support frame,

[0031] 41 - First cage rod, 42 - Second cage rod,

[0032] 5 - Locking mechanism, 51 - Ring sleeve, 511 - Chute, 52 - First positioning disk, 521 - First limiting tooth, 522 - Limiting slider, 523 - Axle hole, 53 - Second positioning disk, 531 - Second limiting tooth, 532 - Connecting shaft, 54 - Locking bolt, 55 - Spring. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] As Figures 1 to 5 shown, a folding hopper includes a folding hopper and a blanking hopper 2 from top to bottom in sequence. The folding hopper includes two folding walls 11 arranged in parallel. The two ends of the two folding walls 11 are respectively connected by connecting walls 12 through transition connection. In this way, the folding walls 11 and the connecting walls 12 together form a concrete receiving hopper with open upper and lower ends. The bottom ends of the folding walls 11 and the connecting walls 12 are hermetically connected to the top opening part of the blanking hopper 2, and the concrete stored inside the folding hopper is discharged through the blanking hopper 2.

[0035] The blanking hopper 2 is arranged in a funnel-shaped structure, with open upper and lower ends. A sealing plate 21 for plugging the bottom opening of the blanking hopper 2 is inserted on the side wall of the blanking hopper 2.

[0036] The blanking hopper 2 is also provided with a support frame 3 for supporting and maintaining the shape of the folding hopper. The support frame 3 is composed of two parts and is respectively hinged to both sides of the top of the blanking hopper 2. The two support frames 3 are respectively located on both sides of the two connecting walls 12. Both sides of the two support frames 3 are provided with retaining rods. The suspended ends of the retaining rods on the same side are hinged, and a locking mechanism 5 is arranged between the corresponding two retaining rods. The locking mechanism 5 is used to lock the rotation angle between the two retaining rods, thereby forming the angle fixation of the support frame 3 and finally realizing the locking of the unfolding size of the folding wall 11.

[0037] Specifically in this embodiment, the folding wall 11 is made of a soft material and is arranged in a folding fan-shaped structure. The soft material is preferably synthetic rubber used for manufacturing automobile tires, etc. The thickness of the folding wall 11 is preferably set between 3 mm and 8 mm, the height is preferably set at 500 mm, the maximum unfolded length is preferably set at 1000 mm, and the distance between two adjacent folding walls 11 is preferably set at 300 mm. Of course, the size of the folding wall 11 and the distance between the two folding walls 11 can also be adjusted according to actual applications, and the thickness of the folding wall 11 can be adjusted adaptively according to the overall capacity of the folding hopper, ensuring that under the toughness strength of the folding wall 11 itself and the support of the support frame 3 and the retaining rods, the folding wall 11 will not be deformed due to the extrusion of the concrete stored inside and cause the concrete to flow out.

[0038] Preferably, the connecting wall 12 is also made of a soft material.

[0039] Further, as shown in Figure 1 , Figure 4 and Figure 5 , a sealing gasket 13 is provided between the folding wall 11 and the hopper 2. The top surface of the sealing gasket 13 is hermetically connected to the wrinkled part of the bottom surface of the folding wall 11, and the bottom surface of the sealing gasket 13 is hermetically connected to the hopper 2. The main function of such a design is to increase the sealing performance between the wrinkled part of the folding wall 11 and the hopper 2, and prevent concrete from leaking here.

[0040] Further, a first extension wall 121 extending into the interior of the hopper 2 is provided at the bottom of the connecting wall 12, and a second extension wall 131 extending into the interior of the hopper 2 is provided at the inner side edge of the sealing gasket 13. The transition connection between the folding hopper and the hopper 2 is realized through the first extension wall 121 and the second extension wall 131, further increasing the connection sealing performance between the folding hopper and the hopper 2, and preventing concrete from leaking at the transition between the folding hopper and the hopper 2.

[0041] As a specific implementation manner, as shown in Figure 6 and Figure 7 , an avoidance opening 24 for inserting the sealing plate 21 is provided on the side wall of the hopper 2, and a support plate 22 is provided at the inner wall of the hopper 2 and below the avoidance opening 24. The top surface of the support plate 22 coincides with the bottom surface of the avoidance opening 24. After the sealing plate 21 is inserted into the avoidance opening 24 in this way, the support plate 22 forms a support for the sealing plate 21, ensuring that the sealing plate 21 has sufficient supporting force to bear the concrete in the folding hopper and the hopper 2.

[0042] For facilitating the insertion and extraction of the sealing plate 21, a handle 211 is further provided on the sealing plate 21.

[0043] Specifically in this embodiment, a shaft seat 23 corresponding to the support frame 3 is provided at the top of the hopper 2, and the bottom of the support frame 3 is rotationally and cooperatively connected to the corresponding shaft seat 23 through a connecting shaft.

[0044] For the convenience of description, the two mutually rotatably connected cage rods are tentatively named the first cage rod 41 and the second cage rod 42 respectively.

[0045] As a specific implementation manner, as shown in Figure 1 , Figure 8 and Figure 9As shown, the locking mechanism 5 includes a collar 51 fixedly connected to the first cage rod 41. On the inner wall of the collar 51, a sliding groove 511 arranged parallel to the axis of the collar 51 is provided. A first positioning disk 52 is slidably arranged in the collar 51. Around the first positioning disk 52, limit sliding blocks 522 matching with the sliding groove 511 are provided. In this way, the first positioning disk 52 can only reciprocate along the axis direction of the collar 51 in the collar 51. The locking mechanism 5 further includes a second positioning disk 53 fixedly connected to the second cage rod 42. A connecting shaft 532 is coaxially arranged on the second positioning disk 53. On the first positioning disk 52, a shaft hole 523 for the connecting shaft 532 to pass through is provided. The shaft hole 523 is coaxially arranged with the first positioning disk 52. On the side of the first positioning disk 52 facing the second positioning disk 53, a first limit tooth 521 is provided. On the side of the second positioning disk 53 facing the first positioning disk 52, a second limit tooth 531 meshing with the first limit tooth 521 is provided. A spring 55 for preventing the first positioning disk 52 from approaching the second positioning disk 53 is arranged between the first positioning disk 52 and the second positioning disk 53. The connecting shaft 532 is provided with threads, and a locking bolt 54 is in threaded connection with the threads on the connecting shaft 532. The locking bolt 54 is located on the side corresponding to the first positioning disk 52.

[0046] Working principle of the locking mechanism 5: Since the first positioning disk 52 is sleeved outside the connecting shaft 532 and slidably arranged in the collar 51, when the locking bolt 54 is loosened, under the elastic force of the spring 55, the first positioning disk 52 is pushed to the side away from the second positioning disk 53, and the meshing relationship between the first limit tooth 521 and the second limit tooth 531 is disengaged. At this time, the first positioning disk 52 can rotate around the connecting shaft 532. At the same time, due to the limiting relationship between the limit sliding block 522 and the sliding groove 511, a limit for rotating around the axis is formed between the collar 51 and the first positioning disk 52. Therefore, when the first positioning disk 52 rotates, it will drive the collar 51 to rotate synchronously, and finally a relative angular rotation adjustment is formed between the first cage rod 41 and the second cage rod 42. After adjusting to the appropriate angle, tighten the locking bolt 54 to re - establish the meshing relationship between the first limit tooth 521 and the second limit tooth 531. Under the action of the teeth, a lock is formed between the first positioning disk 52 and the second positioning disk 53, and the first positioning disk 52 cannot rotate around the connecting shaft 532, thereby fixing the first cage rod 41 and the second cage rod 42.

[0047] The opening angle between two corresponding cage rods can be adjusted through the locking mechanism 5, so as to adjust the opening and closing angle between the two support frames 3, and finally adjust the telescopic size of the folding wall 11. The greater the stretching amplitude of the folding wall 11, the larger the volume of the overall folding hopper and the larger the occupied space; the greater the contraction amplitude of the folding wall 11, the smaller the volume of the overall folding hopper and the smaller the occupied space. Therefore, the size of the folding hopper can be adjusted according to different construction spaces to meet the needs of the on-site operation environment. When concrete pouring is not carried out, the folding hopper can be adjusted to the state with the maximum contraction amplitude to reduce the occupied space of the entire hopper.

[0048] When using this hopper to pour concrete, the main application scenarios are those where it is not suitable to use a pump truck for concrete pouring (reasons such as small pouring volume, site restrictions, economy, etc., such as the construction of cable trenches, parapets, etc.). For example, first, the discharge port of the feeding hopper 2 is blocked by the sealing plate 21, and then an appropriate amount of concrete is added to the folding hopper for standby. The hopper is lifted by a crane or manually, and pulling out the sealing plate 21 outward can make the concrete flow out from the discharge port of the feeding hopper 2. Controlling the blocking amplitude of the sealing plate 21 on the feeding hopper 2 can further adjust the outflow rate of the concrete per unit time.

[0049] Furthermore, in this embodiment, a lifting hook (not shown in the figure) is provided at the top of the support frame 3 to facilitate lifting the hopper.

[0050] After the concrete pouring is completed, the residue in the hopper needs to be cleaned in time to prevent solidification residues from affecting the next use of the hopper.

[0051] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A folding hopper, characterized in that: It includes a folding hopper and a blanking hopper (2) from top to bottom in sequence. The folding hopper includes two folding walls (11) arranged in parallel. The two ends of the two folding walls (11) are respectively transitionally connected through connecting walls (12). The bottom ends of the folding walls (11) and the connecting walls (12) are hermetically connected to the blanking hopper (2). A sealing plate (21) for plugging the bottom opening of the blanking hopper (2) is inserted on the side wall of the blanking hopper (2). A support frame (3) is further arranged on the blanking hopper (2). The support frame (3) is composed of two parts and is respectively hinged to both sides of the top of the blanking hopper (2). Retaining frame rods are arranged on both sides of the two support frames (3). The suspended ends of the retaining frame rods on the same side are hinged, and a locking mechanism (5) is arranged between the corresponding two retaining frame rods.

2. The foldable hopper according to claim 1, wherein: A sealing gasket (13) is arranged between the folding wall (11) and the blanking hopper (2). The top surface of the sealing gasket (13) is hermetically connected to the wrinkled part of the bottom surface of the folding wall (11), and the bottom surface of the sealing gasket (13) is hermetically connected to the blanking hopper (2).

3. The foldable hopper according to claim 2, characterized in that: The bottom of the connecting wall (12) is provided with a first extending wall (121) extending into the blanking hopper (2), and the inner side edge of the sealing gasket (13) is provided with a second extending wall (131) extending into the blanking hopper (2).

4. A foldable hopper according to claim 1, wherein: An avoidance opening (24) for inserting the sealing plate (21) is arranged on the side wall of the blanking hopper (2). A support plate (22) is arranged at the inner wall of the blanking hopper (2) and below the avoidance opening (24). The top surface of the support plate (22) coincides with the bottom surface of the avoidance opening (24).

5. The foldable hopper according to claim 4, characterized in that: A handle (211) is further arranged on the sealing plate (21).

6. The foldable hopper according to claim 1, wherein: The corresponding two retaining frame rods are respectively a first retaining frame rod (41) and a second retaining frame rod (42). The locking mechanism (5) includes a ring sleeve (51) fixedly connected to the first retaining frame rod (41). A sliding groove (511) arranged parallel to the axis of the ring sleeve (51) is arranged on the inner wall of the ring sleeve (51). A first positioning disk (52) is slidably arranged in the ring sleeve (51). A limiting slider (522) matching with the sliding groove (511) is arranged around the first positioning disk (52). The locking mechanism (5) further includes a second positioning disk (53) fixedly connected to the second retaining frame rod (42). A connecting shaft (532) is coaxially arranged on the second positioning disk (53). A shaft hole (523) for the connecting shaft (532) to pass through is arranged on the first positioning disk (52). A first limiting tooth (521) is arranged on the first positioning disk (52). A second limiting tooth (531) meshing with the first limiting tooth (521) is arranged on the second positioning disk (53). A spring (55) is arranged between the first positioning disk (52) and the second positioning disk (53). A thread is arranged on the connecting shaft (532), and a locking bolt (54) is in threaded connection with the thread on the connecting shaft (532). The locking bolt (54) is located on the side corresponding to the first positioning disk (52).

7. A folding hopper according to claim 1, characterized in that: A shaft seat (23) corresponding to the support frame (3) is provided at the top of the blanking hopper (2), and the bottom of the support frame (3) is rotationally and cooperatively connected to the corresponding shaft seat (23) through a connecting shaft.

8. A foldable hopper according to claim 1, wherein: A hook is provided at the top of the support frame (3).

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