Self-service opening and closing device for sand loading and unloading box
By designing a self-service switching device, the automatic switching of sand loading and unloading boxes is achieved using gravity and jacking columns. This solves the problems of time-consuming and labor-intensive operation and instability of automated devices in existing technologies, and realizes simple, fast and reliable switching operation.
Patent Information
- Application Number
- CN202423222475.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-26
AI Technical Summary
The operation of the switch panel of the existing sand loading and unloading box is time-consuming and labor-intensive. Manual operation is labor-intensive, while automated devices are costly, prone to jamming, and have a short service life.
Design a self-service switch device, including a sliding switch plug and a lower lifting bracket, to achieve automated operation of the switch by using gravity and a lifting column. The sliding switch plug closes by its own gravity and opens by the reaction force of the lifting column, simplifying the operation process.
It achieves simple, quick, flexible and reliable switching operation, reduces labor intensity, and improves safety and equipment lifespan.
Smart Images
Figure CN223771009U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a switch device, concretely relates to a self-help switch device for sand loading and unloading box. BACKGROUND
[0002] Sand casting refers to a casting method for producing castings in a sand mold. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting method. Since sand casting uses sand as mold material, the mold making material used is cheap and easy to obtain, and can be reused, and the mold manufacturing is simple, which can adapt to single piece production, batch production and mass production of castings, therefore, sand casting is an important and basic process method widely used in machine manufacturing.
[0003] When sand casting is carried out, the sand used for mold making needs to be transported by air hoisting, and the existing transport tool is a sand loading and unloading box. The bottom of the existing sand loading and unloading box is processed with a sand outlet, and a switch plate is installed on the sand outlet. The switch plate can be pushed and pulled or rotated to open or close the sand outlet. In the actual use of the sand loading and unloading box for air hoisting transportation of sand, the push and pull or rotation operation of most switch plates is manually operated by workers. Manual operation is time-consuming and laborious, and the labor intensity of workers is high, and the work safety is low. The push and pull or rotation operation of a small number of switch plates is automatically controlled by electric or hydraulic devices. Although the labor intensity of workers is reduced and the work safety is improved, the manufacturing and use cost is higher, the automatic switch is not smooth, the failure rate is high, and the service life is low. SUMMARY
[0004] The utility model aims at solving the deficiency existing in the prior art, and provides a self-help switch device for sand loading and unloading box, which is simple and novel in structure, practical in function, can be self-helped to operate, simple and fast to operate, and flexible and reliable in switching.
[0005] The utility model discloses a technical scheme is: a kind of for sand loading and unloading box's self-service switch device, including loading and unloading box body 1, upper sliding support 2, sliding switch plug 3, sealing ring 4 and lower jacking support 5, the bottom of loading and unloading box body 1 is provided with discharge pipe 11, the shape of discharge pipe 11 is funnel, sealing ring 4 is arranged on the lower end outlet of discharge pipe 11, sealing ring 4 is provided with discharge hole 41 in the middle, upper sliding support 2 includes sliding block 21 and upper support rod 22, sliding block 21 is provided with sliding hole in the middle, a plurality of upper support rod 22 is evenly arranged around sliding block 21 in circular array, upper support gap 23 is formed between a plurality of upper support rod 22, upper sliding support 2 is arranged inside discharge pipe 11, upper support rod 22 is fixedly connected with discharge pipe 11, sliding switch plug 3 is arranged between upper sliding support 2 and sealing ring 4, sliding switch plug 3 includes upper sliding rod 31 and lower switch plug 32, upper sliding rod 31 is inserted in the sliding hole of sliding block 21, the upper portion of upper sliding rod 31 is conical body, lower switch plug 32 is fusiform component, lower conical body of lower switch plug 32 is inserted in discharge hole 41, and the upper hole edge of discharge hole 41 is contacted, lower jacking support 5 is arranged directly below sliding switch plug 3, lower jacking support 5 includes jacking column 51 and lower support rod 52, a plurality of lower support rod 52 is evenly arranged around jacking column 51 in circular array, lower support gap 53 is formed between a plurality of lower support rod 5.
[0006] Further improvement is that the upper portion of sliding block 21 is a frustum.
[0007] Further improvement is that lower switch plug 32 is a spherical component.
[0008] Further improvement is that the lower bottom of lower switch plug 32 is provided with positioning taper hole 33, and the upper portion of jacking column 51 is provided with a cone.
[0009] Compared with prior art, the utility model has the following beneficial effects: simple and novel structure, practical function, self-service switching operation, simple and fast operation, flexible and reliable switching. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is the structure schematic view of the first embodiment of the utility model,
[0011] Figure 2 It is Figure 1 the plan view,
[0012] Figure 3 It is the structure schematic view of lower jacking support in the utility model,
[0013] Figure 4 It is the structure schematic view of the second embodiment of the utility model. DETAILED DESCRIPTION
[0014] The preferred embodiments of the utility model are described in detail below in combination with the drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, and the protection scope of the utility model can be more clearly and explicitly defined.
[0015] As Figure 1 , Figure 2 and Figure 3 shown in the first embodiment, a self-help opening and closing device for a sand loading and unloading box comprises a loading and unloading box body 1, an upper sliding support 2, a sliding switch plug 3, a sealing ring 4 and a lower jacking support 5, the bottom of the loading and unloading box body 1 is provided with a discharge pipe 11, the discharge pipe 11 is funnel-shaped, the upper end inlet is large in caliber, the lower end outlet is small in caliber, a connecting flange is fixedly installed at the lower end outlet of the discharge pipe 11, the sealing ring 4 is arranged on the lower end outlet of the discharge pipe 11, a discharge hole 41 is arranged in the middle of the sealing ring 4, the sealing ring 4 is connected with the connecting flange through connecting screws, when the sealing ring 4 needs to be replaced due to wear, the sealing ring 4 can be conveniently and quickly replaced, the upper sliding support 2 comprises a sliding block 21 and upper support rods 22, the sliding block 21 is provided with a sliding hole in the middle, the upper part of the sliding block 21 is a conical table, a plurality of upper support rods 22 are uniformly arranged in a circular array around the sliding block 21, upper support gaps 23 are formed between the plurality of upper support rods 22, the upper sliding support 2 is arranged inside the discharge pipe 11, the upper support rods 22 are fixedly connected with the discharge pipe 11, the sliding switch plug 3 is arranged between the upper sliding support 2 and the sealing ring 4, the sliding switch plug 3 comprises an upper sliding rod 31 and a lower switch plug 32, the upper sliding rod 31 is inserted into the sliding hole of the sliding block 21, the upper sliding rod 31 can freely slide up and down in the sliding hole, the upper part of the upper sliding rod 31 is a circular cone, the lower switch plug 32 is a spindle-shaped member, which is divided into an upper circular cone and a lower circular cone, the lower circular cone of the lower switch plug 32 is inserted into the discharge hole 41 and is in contact with the upper hole edge of the discharge hole 41 to seal and close, the lower jacking support 5 is arranged directly below the sliding switch plug 3, the lower jacking support 5 comprises a jacking column 51 and lower support rods 52, a plurality of lower support rods 52 are uniformly arranged in a circular array around the jacking column 51, lower support gaps 53 are formed between the plurality of lower support rods 52, the lower switch plug 32 is provided with a positioning conical hole 33 at the lower bottom, the upper part of the jacking column 51 is provided with a circular cone.
[0016] As Figure 4 shown in the second embodiment, the technical scheme is deformed and improved, the lower switch plug 32 is a circular spherical member, the lower half of the circular spherical member is inserted into the discharge hole 41 and is in contact with the upper hole edge of the discharge hole 41 to seal and close.
[0017] The working principle of the self-help switch device of the sand loading and unloading box is as follows: the loading and unloading box body 1 is suspended on a crane or a travelling crane, and the lower lifting support 5 is placed at a sand unloading position; when the loading and unloading box body 1 needs to be filled with sand, the sliding switch plug 3 slides downward under the action of its own gravity, so that the lower part of the lower switch plug 32 is in contact with the upper hole edge of the discharge hole 41 to seal and close, and the linear contact sealing is more compact; at this time, the sliding switch plug 3 is in a closed state; when the loading and unloading box body 1 is filled with sand, the sand exerts a downward extrusion force on the lower switch plug 32, so that the contact sealing is more firm and sand leakage is prevented; when the loading and unloading box body 1 needs to be unloaded at the upper position of the sand unloading position, the loading and unloading box body 1 moves downward, so that the lower switch plug 32 is in contact with the lifting column 51, the upper part of the lifting column 51 is inserted into the positioning taper hole 33, the loading and unloading box body 1 continues to move downward, the sliding switch plug 3 slides upward under the action of the reaction force of the lifting column 51, so that the lower switch plug 32 is away from the discharge hole 41, and a discharge gap is formed between the lower switch plug 32 and the discharge hole 41; at this time, the sliding switch plug 3 is in an open state, and the sand in the loading and unloading box body 1 flows out from the discharge gap and the discharge hole 41, and then flows into the sand unloading position through the lower support gap 53.
[0018] The sliding switch plug 3 slides downward under its own gravity to close, and slides upward under the action of the reaction force of the lifting column 51 to open when the loading and unloading box body 1 moves downward, so that the self-help switch operation is realized, and the operation is simple and fast, and the switch is flexible and reliable.
[0019] The upper part of the upper sliding rod 31 is a conical body, and the lower switch plug 32 is a spindle-shaped member or a spherical member, which is beneficial to reducing the upward sliding resistance of the sliding switch plug 3 when the sand is unloaded, so that the opening is flexible and smooth without jamming.
[0020] However, any change or replacement without creative labor is also covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be limited by the protection scope defined in the claims.
Claims
1. A self-service opening and closing device for a sand loading and unloading box, characterized by, The utility model relates to a box loading and unloading device, including loading and unloading box body (1), upper slide support (2), slide switch plug (3), sealing ring (4) and lower jacking support (5), the bottom of loading and unloading box body (1) is provided with discharge pipe (11), the shape of discharge pipe (11) is funnel shape, sealing ring (4) sets up on the lower end export of discharge pipe (11), the middle of sealing ring (4) is provided with discharge hole (41), upper slide support (2) includes slide block (21) and upper support rod (22), the middle of slide block (21) is equipped with slide hole, a plurality of upper support rod (22) is evenly arranged around slide block (21) in circular array, and upper support gap (23) is formed between a plurality of upper support rod (22), upper slide support (2) sets up inside discharge pipe (11), and upper support rod (22) is fixedly connected with discharge pipe (11), slide switch plug (3) is arranged between upper slide support (2) and sealing ring (4), and slide switch plug (3) includes upper slide rod (31) and lower switch plug (32), upper slide rod (31) is inserted in the slide hole of slide block (21), and the upper portion of upper slide rod (31) is conical body, and lower switch plug (32) is fusiform member, and the lower conical body of lower switch plug (32) is inserted in discharge hole (41), and is contacted with the upper orifice edge of discharge hole (41), lower jacking support (5) sets up directly below slide switch plug (3), and lower jacking support (5) includes jacking column (51) and lower support rod (52), a plurality of lower support rod (52) is evenly arranged around jacking column (51) in circular array, and lower support gap (53) is formed between a plurality of lower support rod (52).
2. A self-closing device for a sand box according to claim 1, wherein The upper portion of slide block (21) is conical frustum.
3. A self-closing device for a sand box according to claim 1, wherein Lower switch plug (32) is spherical member.
4. A self-closing device for a sand box according to claim 1, wherein The lower bottom of lower switch plug (32) is provided with positioning taper hole (33), and the upper portion of jacking column (51) is provided with conical body.