Compression pouring mold and compression pouring manufacturing device

Abstract

The utility model discloses a compression pouring mold and a compression pouring manufacturing device, and relates to the technical field of building materials. A compression opening is formed in the upper end of the mold body, and drain hole groups are formed in the side walls of the mold body. The drainage hole group comprises a plurality of drainage hole groups; at least one drainage hole group is distributed on each side wall of the mold body along the length direction of the mold body; at least one drainage hole group is distributed in the width direction of the drainage pipe; the drainage hole set comprises a plurality of drainage holes, and the drainage holes are evenly distributed around the axis in the circumferential direction. The gas and moisture discharge effect is improved, and the product strength and the overall durability are improved.

Description

Technical Field

[0001] This utility model relates to the field of building materials technology, and in particular to a compression casting mold and a compression casting production device. Background Technology

[0002] As a crucial component of road construction, the production quality of concrete curbs directly impacts the road's functionality and lifespan. Conventional concrete curbs utilize a high water-cement ratio and employ vibration compaction, which fails to eliminate numerous micro-air bubbles, resulting in high porosity in the finished concrete. This makes them vulnerable to water and corrosive ions during long-term service. Applying compression casting technology to curb production can significantly improve its durability and strength. This technology increases concrete density by applying pressure to the freshly mixed concrete before it is poured into the mold, eliminating internal air bubbles and micro-cracks, thus enhancing durability and strength. However, existing compression casting concrete molding equipment releases gas and moisture through the joint between the pressure surface and the mold. When the finished concrete is of considerable height, poor venting and drainage can lead to localized areas of low density in the concrete.

[0003] Therefore, the mold structure used for producing compressed concrete curb stones still needs to be improved and enhanced. Utility Model Content

[0004] The purpose of this invention is to provide a compression casting mold and compression casting device to solve the problems existing in the prior art, improve the gas and moisture discharge effect, and improve the strength and overall durability of the product.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides a compression casting mold, including a mold body; the upper end of the mold body has a compression opening, and each side wall of the mold body is provided with a group of drainage holes; the group of drainage holes includes multiple drainage hole sets; at least one drainage hole set is distributed along the length direction on each side wall of the mold body; and at least one drainage hole set is distributed along the width direction; the drainage hole set includes multiple discharge holes, and each discharge hole is evenly distributed circumferentially around an axis.

[0007] Preferably, the mold body includes a bottom mold and at least one upper mold; in the vertical direction, the upper molds are stacked sequentially, and the lowermost upper mold is fixed to the upper end of the bottom mold; the bottom mold has a first receiving groove, and the upper mold has a through channel running vertically through it; the through channel of the lowermost upper mold communicates with the first receiving groove of the bottom mold; the bottom mold and each of the upper molds are provided with the drainage hole group on their respective side walls.

[0008] Preferably, the bottom mold includes a bottom plate and a side mold; the shape of the side mold is consistent with the shape of the upper mold; the bottom plate is fixedly closed at the lower opening of the side mold.

[0009] Preferably, connecting edge plates are fixedly provided around the upper perimeter of the bottom mold, the upper perimeter of the top mold, and the lower perimeter of the top mold; the connecting edge plates are provided with multiple connecting holes; each connecting hole around the upper perimeter of the bottom mold corresponds one-to-one with each connecting hole around the upper perimeter of the top mold; each connecting hole around the upper perimeter of the top mold corresponds one-to-one with each connecting hole around the lower perimeter of the top mold.

[0010] Preferably, reinforcing ribs are fixedly provided on the outer walls of the bottom mold and each of the upper molds.

[0011] This embodiment also provides a compression casting apparatus, including a pressure applying frame, a pressure output mechanism, and a compression casting mold as described in any of the preceding embodiments; the pressure applying frame has a support platform; the pressure output mechanism is fixedly mounted on the pressure applying frame; the pressure output mechanism has a pressure head capable of extending and retracting in a vertical direction, the pressure head being located above the support platform; the compression casting mold is fixedly mounted on the support platform; on the vertical projection plane, the projection shape of the pressure head corresponds to the projection shape of the compression opening of the compression casting mold.

[0012] Preferably, the pressure output mechanism includes at least one telescopic mechanism; one end of each telescopic mechanism is fixedly connected to the pressure application frame; and the output end of each telescopic mechanism can be fixedly connected to the pressure head.

[0013] Preferably, a pressure detector is also provided between the output end of each of the telescopic mechanisms and the pressure head.

[0014] Preferably, the telescopic mechanism is a hydraulic jack.

[0015] Preferably, the pressure-applying frame includes an upper top plate, four connecting rods, and a lower bottom plate; the upper top plate is located above the lower bottom plate; each of the connecting rods is distributed at one of the four corners of the upper top plate and the lower bottom plate; the upper end of each connecting rod is fixedly connected to the upper top plate, and the lower end of each connecting rod is fixedly connected to the lower bottom plate; the pressure output mechanism is fixedly disposed on the side of the upper top plate near the lower bottom plate; the upper surface of the lower bottom plate forms the support platform.

[0016] The present invention achieves the following technical advantages over the prior art:

[0017] The compression casting mold provided by this utility model has drainage hole groups on each side wall of the mold body, and the drainage hole groups are distributed in both length and width directions. This multi-directional layout allows the gas and moisture generated during the compression casting process to be discharged from multiple directions. The discharge holes in the drainage hole group are evenly distributed circumferentially, so that the moisture can be discharged more evenly from all directions. Compared with drainage in one direction, this evenly distributed drainage hole can prevent moisture from accumulating locally in the mold, making the moisture distribution of the entire cast product more uniform, which is conducive to improving the quality of the product, thereby improving the product strength and overall durability.

[0018] Furthermore, the mold consists of a bottom mold and at least one upper mold. This layered design increases the mold's flexibility. When casting products of different heights or complex shapes, the number of upper molds can be increased or decreased to meet the needs. Drainage holes are provided on the side walls of the bottom mold and each upper mold, allowing gas and moisture to be discharged from each layer simultaneously. Gas and moisture can be discharged in a timely manner at different heights of the casting material, effectively reducing porosity inside the product and defects caused by moisture accumulation.

[0019] Furthermore, the bottom mold consists of a base plate and side molds, which makes mold assembly more convenient; the shape of the side mold is consistent with the shape of the upper mold, which makes the components more standardized and the manufacturing cost lower.

[0020] Furthermore, connecting edge plates are fixedly installed around the upper end of the bottom mold, the upper end of the top mold, and the lower end of the bottom mold, and connected through connecting holes. This design greatly enhances the stability of the connection between the various parts of the mold.

[0021] Furthermore, fixing reinforcing ribs on the outer walls of the bottom mold and each upper mold can significantly enhance the strength of the mold; the reinforcing ribs help improve the stability of the mold during use.

[0022] The compression casting device provided by this utility model has a pressure output mechanism whose pressure head extends and retracts in the vertical direction, and its projection shape corresponds to the projection shape of the compression opening of the compression casting mold. This allows the pressure to be precisely applied to the casting material inside the mold during the compression casting process.

[0023] Furthermore, the pressure output mechanism includes at least one telescopic mechanism. This design makes pressure control more flexible. By adjusting the degree of extension and retraction of the telescopic mechanism, the pressure applied by the pressure head to the compression casting mold can be precisely controlled.

[0024] Furthermore, a pressure detector is installed between the output end of the telescopic mechanism and the pressure head, which can monitor the pressure applied to the pressure head in real time. During the compression casting process, precise pressure control is crucial for the quality of the product. Through the pressure detector, the pressure at each moment can be accurately known, ensuring that the pressure is always kept within the appropriate process range. The pressure detector can also prevent pressure overload and ensure the safe operation of the device.

[0025] Furthermore, as a telescopic mechanism, the hydraulic jack possesses a powerful pressure output capability. During the compression casting process, for some high-density materials or products requiring high molding pressure, the hydraulic jack can provide sufficient pressure; the hydraulic jack can also achieve precise telescopic stroke control by controlling the flow rate and direction of the hydraulic oil.

[0026] Furthermore, the pressure frame consists of an upper top plate, four connecting rods, and a lower bottom plate. This four-corner support structure design gives it high structural stability. During the compression casting process, the pressure output mechanism applies a large pressure to the pressure head, and the sturdy frame can withstand this pressure well. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the overall structure of the compression casting mold provided by this utility model;

[0029] Figure 2 A schematic diagram of the drainage hole assembly in the compression casting mold provided by this utility model;

[0030] Figure 3 A front view of the compression casting mold provided by this utility model;

[0031] Figure 4 A top view of the compression casting mold provided by this utility model;

[0032] Figure 5 A side view of the compression casting mold provided by this utility model;

[0033] Figure 6 A schematic diagram of the overall structure of the compression casting production device provided by this utility model.

[0034] In the picture:

[0035] 10-Mold body; 11-Bottom mold; 111-Side mold; 112-Base plate; 12-Upper mold; 13-Drainage hole assembly; 131-Discharge hole; 14-Connecting edge plate; 141-Connecting hole; 15-Connecting bolt;

[0036] 20-Pressure frame; 21-Upper top plate; 22-Connecting rod; 23-Lower bottom plate;

[0037] 30 - Telescopic mechanism;

[0038] 40 - Pressure detector;

[0039] 50-pressure head. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] The purpose of this invention is to provide a compression casting mold and compression casting device to solve the problems existing in the prior art, improve the gas and moisture discharge effect, and improve the strength and overall durability of the product.

[0042] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] Example 1

[0044] This embodiment provides a compression casting mold, primarily but not limited to the production of concrete curb stones, such as... Figures 1-6 As shown, the mold includes a mold body 10; the upper end of the mold body 10 has a compression opening, and each side wall of the mold body 10 is provided with a group of drainage holes; the group of drainage holes includes a plurality of drainage hole sets 13; on each side wall of the mold body 10, at least one drainage hole set 13 is distributed along its length direction; and at least one drainage hole set 13 is distributed along its width direction; the drainage hole set 13 includes a plurality of discharge holes 131, and each discharge hole 131 is evenly distributed circumferentially around an axis.

[0045] Each side wall of the mold body 10 is provided with a group of drainage holes, which are distributed in both length and width directions. This multi-directional layout allows the gas and moisture generated during the compression casting process to be discharged from multiple directions. The discharge holes 131 in the drainage hole group 13 are evenly distributed circumferentially, allowing moisture to be discharged more evenly from all directions. Compared with drainage in one direction, this evenly distributed drainage hole can prevent moisture from accumulating locally in the mold, making the moisture distribution of the entire cast product more uniform, which is conducive to improving the quality of the product, thereby improving the product strength and overall durability.

[0046] Specifically, the drainage hole group set on the side wall of the mold body 10 can avoid uneven density caused by poor drainage and air release of concrete along the compression height, thereby better improving the production quality of compressed concrete curb stones.

[0047] Specifically, the discharge hole 131 is a circular hole with a diameter of 1 mm, and each drainage hole group 13 includes six discharge holes 131. When the centers of two adjacent discharge holes 131 are connected, they form a regular hexagon with a side length of 5 mm. Each discharge hole 131 penetrates through the side wall thickness direction of the mold body 10.

[0048] Specifically, the size of the discharge hole 131 will not leak concrete slurry, thereby ensuring uniform density of the concrete throughout the pressurization process and improving the strength and durability of the concrete curbstone.

[0049] Specifically, the drain hole can be round or other shapes.

[0050] Specifically, a filter screen can be installed inside the drainage hole to accommodate different concrete mix proportions.

[0051] Specifically, the shape of the product inside the mold body 10 is adapted to the shape of the concrete curbstone to be produced.

[0052] Specifically, the final product shape within the inner cavity of the mold body 10 can be as follows: Figure 1 The regular shape shown can also be other irregular shapes to accommodate the preparation of concrete curb stones of different shapes.

[0053] The structural composition of the mold body 10 is described below:

[0054] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 , Figure 3 and Figure 5As shown, the mold body 10 includes a bottom mold 11 and at least one upper mold 12. Vertically, the upper molds 12 are stacked sequentially, with the lowest upper mold 12 fixed to the top of the bottom mold 11. The bottom mold 11 has a first receiving groove and a through channel running vertically through the upper mold 12. The through channel of the lowest upper mold 12 communicates with the first receiving groove of the bottom mold 11. Drainage holes are provided on each side wall of the bottom mold 11 and each upper mold 12. The mold consists of a bottom mold 11 and at least one upper mold 12. This layered design increases the mold's flexibility. When casting products of different heights or complex shapes, the number of upper molds 12 can be increased or decreased to meet the requirements. The drainage holes on each side wall of the bottom mold 11 and each upper mold 12 allow gas and moisture to be discharged simultaneously from each layer, ensuring timely discharge of gas and moisture at different heights of the cast material, effectively reducing porosity inside the product and defects caused by moisture accumulation.

[0055] Specifically, such as Figure 1 As shown, the upper mold 12 is composed of four side panels connected end to end in sequence.

[0056] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 , Figure 3 and Figure 5 As shown, the bottom mold 11 includes a base plate 112 and a side mold 111; the shape of the side mold 111 is consistent with the shape of the upper mold 12; the base plate 112 is fixedly closed at the lower opening of the side mold 111. The bottom mold 11 is composed of a base plate 112 and a side mold 111, which makes mold assembly more convenient; the shape of the side mold 111 is consistent with the shape of the upper mold 12, which makes the components more universal and the manufacturing cost lower.

[0057] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 , Figure 4 and Figure 5 As shown, connecting edge plates 14 are fixedly installed around the upper perimeter of the bottom mold 11, the upper perimeter of the top mold 12, and the lower perimeter of the top mold 12. Multiple connecting holes 141 are provided on the connecting edge plates 14. Each connecting hole 141 around the upper perimeter of the bottom mold 11 corresponds one-to-one with each connecting hole 141 around the upper perimeter of the top mold 12; each connecting hole 141 around the upper perimeter of the top mold 12 corresponds one-to-one with each connecting hole 141 around the lower perimeter of the top mold 12. The fixed installation of connecting edge plates 14 around the upper perimeter of the bottom mold 11, the upper perimeter of the top mold 12, and the lower perimeter of the bottom mold, connected via connecting holes 141, greatly enhances the stability of the connections between the various parts of the mold.

[0058] Specifically, a connecting bolt 15 is installed in the connecting hole 141 to achieve the connection.

[0059] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 , Figure 3 and Figure 5 As shown, reinforcing ribs are fixedly provided on the outer walls of the bottom mold 11 and each upper mold 12. The fixed installation of reinforcing ribs on the outer walls of the bottom mold 11 and each upper mold 12 can significantly enhance the strength of the mold; the reinforcing ribs also help improve the stability of the mold during use.

[0060] Example 2

[0061] This embodiment provides a compression casting fabrication device, such as... Figures 1-6 As shown, the device includes a pressure frame 20, a pressure output mechanism, and a compression casting mold (i.e., mold body 10) as described in Embodiment 1. The pressure frame 20 has a support platform. The pressure output mechanism is fixedly mounted on the pressure frame 20. The pressure output mechanism has a pressure head 50 that can extend and retract in the vertical direction, and the pressure head 50 is located above the support platform. The compression casting mold is fixedly mounted on the support platform. On the vertical projection plane, the projection shape of the pressure head 50 corresponds to the projection shape of the compression opening of the compression casting mold. The pressure head 50 of the pressure output mechanism extends and retracts in the vertical direction, and its projection shape corresponds to the projection shape of the compression opening of the compression casting mold, which allows the pressure to be precisely applied to the casting material inside the mold during the compression casting process.

[0062] Specifically, during use, fresh-mixed concrete is first placed in the mold body 10 for shaping, and then the pressure output mechanism is activated to precisely apply pressure and maintain the load until demolding. Due to the presence of drainage holes, a large amount of air bubbles and water inside the fresh-mixed concrete are discharged from the pressure surface, joints and drainage hole groups 13 during the pressurization process, making the density of the concrete curbstone more uniform along the compression direction, effectively reducing the porosity and water-cement ratio in local locations, and effectively improving the strength and overall durability of the concrete curbstone.

[0063] Specifically, the pressure output mechanism can precisely apply pressure to fresh-mixed concrete and maintain the load until the concrete is demolded, preventing rebound due to unloading and thus reducing the quality of the compressed concrete curbstone.

[0064] Specifically, the telescopic mechanism 30 and the pressure detector 40 can be any existing type, and their models are not limited.

[0065] The structural description of the pressure frame 20 is as follows:

[0066] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 6As shown, the pressure-applying frame 20 includes an upper top plate 21, four connecting rods 22, and a lower bottom plate 23112. The upper top plate 21 is located above the lower bottom plate 23112. The connecting rods 22 are distributed at the four corners of the upper top plate 21 and the lower bottom plate 23112. The upper end of the connecting rod 22 is fixedly connected to the upper top plate 21, and the lower end of the connecting rod 22 is fixedly connected to the lower bottom plate 23112. The pressure output mechanism is fixedly installed on the side of the upper top plate 21 near the lower bottom plate 23112. The upper surface of the lower bottom plate 23112 forms a support platform. The pressure-applying frame 20 is composed of an upper top plate 21, four connecting rods 22, and a lower bottom plate 23112. This four-corner support structure design gives it high structural stability. During the compression casting process, the pressure output mechanism applies a large pressure to the pressure head 50, and the stable frame can withstand this pressure well.

[0067] Specifically, limit blocks are fixedly installed at both ends of the connecting rod 22 to ensure the firmness of the connection with the upper top plate 21 and the lower bottom plate 23112.

[0068] Specifically, the connecting rod 22 is made of solid metal.

[0069] The structural description of the pressure output mechanism is as follows:

[0070] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 6 As shown, the pressure output mechanism includes at least one telescopic mechanism 30; one end of each telescopic mechanism 30 is fixedly connected to the pressure application frame 20; and the output end of each telescopic mechanism 30 can be fixedly connected to the pressure head 50. The pressure output mechanism includes at least one telescopic mechanism 30, which makes pressure control more flexible. By adjusting the degree of extension and retraction of the telescopic mechanism 30, the pressure applied by the pressure head 50 to the compression casting mold can be precisely controlled.

[0071] In the optional embodiments of this example, a preferred embodiment is that the telescopic mechanism 30 is a hydraulic jack. As the telescopic mechanism 30, the hydraulic jack has a strong pressure output capability. During the compression casting process, for some high-density materials or products requiring high molding pressure, the hydraulic jack can provide sufficient pressure; the hydraulic jack can also achieve precise telescopic stroke control by controlling the flow rate and direction of the hydraulic oil.

[0072] Other settings regarding the relationship between the telescopic mechanism 30 and the pressure head 50 are as follows:

[0073] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 6As shown, a pressure detector 40 is also installed between the output end of each telescopic mechanism 30 and the pressure head 50. The pressure detector 40, installed between the output end of the telescopic mechanism 30 and the pressure head 50, can monitor the pressure applied to the pressure head 50 in real time. During the compression casting process, precise pressure control is crucial for the quality of the product. The pressure detector 40 allows for accurate determination of the pressure at each moment, ensuring that the pressure remains within the appropriate process range. The pressure detector 40 also prevents pressure overload, ensuring the safe operation of the device.

[0074] The construction steps are as follows:

[0075] Step 1: Place the pressure frame 20 on a level surface to prevent the device from tipping over during construction;

[0076] Step 2: Before construction, connect the telescopic mechanism 30 to the bottom surface of the upper plate 21 of the pressure frame 20 with internal bolts, then connect the pressure head 50, and place the pressure detector 40 between each telescopic mechanism 30 and the pressure head 50; then assemble the mold body 10 and place it on the surface of the lower plate 23112 of the pressure frame 20, spray the inner cavity of the mold body 10 with anti-stick coating and clear each drainage hole group 13;

[0077] Step 3: During construction, pour fresh-mixed concrete into the mold body 10 and vibrate it slightly. Then, activate the expansion mechanism 30 to discharge excess air bubbles and moisture inside the fresh-mixed concrete through the pressure surface, joints, and drainage holes. Apply pressure precisely according to the pressure detector 40 and maintain the load until demolding. After a certain period of curing, the high-strength and high-durability compressed concrete curbstone can be put into use.

[0078] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A compression casting mold, characterized in that: Including the mold body; The upper end of the mold body has a compression opening, and each side wall of the mold body is provided with a group of drainage holes. The drainage hole group includes multiple drainage hole sets; at least one drainage hole set is distributed along the length direction on each side wall of the mold body; and at least one drainage hole set is distributed along the width direction. The drainage hole group includes multiple discharge holes, and each discharge hole is evenly distributed circumferentially around an axis.

2. The compression casting mold according to claim 1, characterized in that: The mold body includes a bottom mold and at least one top mold; In the vertical direction, the upper molds are stacked in sequence, and the lowermost upper mold is fixed to the upper end of the bottom mold. The bottom mold has a first receiving groove, and the upper mold has a through channel running vertically through it. The through channel of the lowermost upper mold is connected to the first receiving groove of the lower mold; The bottom mold and each of the upper molds are provided with the drainage hole group on each side wall.

3. The compression casting mold according to claim 2, characterized in that: The bottom mold includes a base plate and a side mold; The shape of the side mold is the same as the shape of the upper mold; The base plate is fixedly closed at the lower opening of the side mold.

4. The compression casting mold according to claim 2, characterized in that: Connecting edge plates are fixedly provided around the upper end of the bottom mold, around the upper end of the top mold, and around the lower end of the top mold. The connecting edge plate has multiple connecting holes; The connecting holes around the upper end of the bottom mold correspond one-to-one with the connecting holes around the upper end of the top mold. The connecting holes around the upper end of the upper mold correspond one-to-one with the connecting holes around the lower end of the upper mold.

5. The compression casting mold according to claim 2, characterized in that: Reinforcing ribs are fixedly provided on the outer walls of the bottom mold and each of the upper molds.

6. A compression casting fabrication apparatus, characterized in that: Includes a pressure application frame, a pressure output mechanism, and a compression casting mold as described in any one of claims 1 to 5; The pressure-applying frame has a support platform; The pressure output mechanism is fixedly mounted on the pressure application frame; the pressure output mechanism has a pressure head that can extend and retract in the vertical direction, and the pressure head is located above the support platform; The compression casting mold is fixedly mounted on the support platform; On the vertical projection plane, the projection shape of the pressure head corresponds to the projection shape of the compression opening of the compression casting mold.

7. The compression casting apparatus according to claim 6, characterized in that: The pressure output mechanism includes at least one telescopic mechanism; One end of each of the telescopic mechanisms is fixedly connected to the pressure frame; and the output end of each of the telescopic mechanisms can be fixedly connected to the pressure head.

8. The compression casting apparatus according to claim 7, characterized in that: A pressure detector is also provided between the output end of each of the telescopic mechanisms and the pressure head.

9. The compression casting apparatus according to claim 7, characterized in that: The telescopic mechanism is a hydraulic jack.

10. The compression casting apparatus according to claim 6, characterized in that: The pressure-applying frame includes an upper top plate, four connecting rods, and a lower bottom plate; The upper top plate is located above the lower bottom plate; Each of the connecting rods is distributed at one of the four corners of the upper top plate and the lower bottom plate; the upper end of the connecting rod is fixedly connected to the upper top plate, and the lower end of the connecting rod is fixedly connected to the lower bottom plate. The pressure output mechanism is fixedly installed on the side of the upper top plate near the lower bottom plate; The upper surface of the lower base plate forms the placement platform.

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