A horizontal sand casting device

Abstract

The invention relates to the technical field of casting equipment, and discloses a horizontal sand casting device, comprising a bottom plate, a bracket, a compressor, a movable component, an adjusting component and a molding component, wherein the bottom plate and the bracket are used to support the various components, the compressor is used to provide pressure for the molding component, the movable component is used to limit and fix the molding component and to take it, the adjusting component plays an adjusting role when the molding component is being molded, and the molding component is used to extrude and mold the sand mold, and by arranging the molding component, the sand above and below the mold bin are molded at the same time, thereby improving the production efficiency, and at the same time, the sand molds in the upper and lower sand bins are fully squeezed, thereby ensuring the quality of the sand mold molding; by arranging the adjusting component and the movable component, the mold bin can be taken and installed, the operation is facilitated, and the production efficiency is improved; by replacing the mold in the partition, the production of different sand molds can be completed and products of different shapes can be produced, thereby improving the adaptability of the device.

Description

Technical Field

[0001] The invention relates to the technical field of casting equipment, in particular to a horizontal sand casting device. Background Art

[0002] Sand casting refers to a casting method that produces castings in sand molds. Steel, iron and most nonferrous alloy castings can be obtained by sand casting. Since the molding materials used in sand casting are cheap and easy to obtain, the mold is easy to manufacture, and it can adapt to the single-piece production, batch production and mass production of castings, it has long been the basic process in casting production. At present, there are many sand casting machines, but they all require two molds to be made separately for splicing and casting, which affects production efficiency. The sand molds pressed in this way are also insufficient, and there will be differences in texture, which affects product quality. It is inconvenient to operate during repeated production. Therefore, it is urgent to invent a horizontal sand casting device to solve the above problems. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a horizontal sand casting device.

[0004] To achieve the above-mentioned solution, the present invention provides the following technical solutions: a horizontal sand casting device, comprising a base plate, a bracket, a compressor, a movable component, an adjusting component and a molding component, the base plate and the bracket are used to support each component, the compressor is used to provide pressure for the molding component, the movable component is used to limit and fix the molding component and take it, the adjusting component plays an adjusting role during molding of the molding component, the molding component is used to extrude and mold the sand mold, an adjusting component is fixedly connected to the front and rear sides above the base plate, a movable component is movably connected to the left and right sides of the base plate, the middle position above the base plate is the molding component, and a rotating groove is provided in the middle position of the base plate, and the rotating groove facilitates the rotation of the molding component above the base plate.

[0005] Preferably, the adjustment component includes a fixed plate, an adjustment chamber is opened in the middle position inside the fixed plate, one is opened on the left and right sides above the adjustment chamber, and adjustment grooves are opened in the middle position of the front and rear sides of the adjustment chamber, and the bottom of the fixed plate is fixedly installed on the base plate.

[0006] Preferably, the molding assembly includes a mold bin and two sand bins, and the openings of the two sand bins are both facing the mold bin.

[0007] Preferably, a groove is provided on both the left and right sides of the bottom plate, and a first gear is movably installed in the groove.

[0008] Preferably, the movable component includes a movable side plate, two first connecting rods are movably installed on one side of the movable side plate, a first rotating shaft is fixedly installed between the first connecting rods, a second gear is fixedly installed in the middle position of the first rotating shaft, the second gear is engaged with the groove, a second connecting rod is movably installed at both ends of the first rotating shaft, and the second connecting rod is fixedly connected to the base plate.

[0009] Preferably, a movable adjusting rod is movably installed in the adjustment bin, a first connecting hole is opened in the middle position of the movable adjusting rod, second connecting holes are opened on both sides of the movable adjusting rod, a third rotating shaft is movably installed in the first connecting hole in the fixed plate on the front side of the base plate, a second rotating shaft is movably installed in the first connecting hole in the fixed plate on the rear side of the base plate, and a turntable is fixedly installed on the outside of the third rotating shaft.

[0010] Preferably, a limit rod is movably connected in the second connecting hole, the top of the limit rod is located in the middle, the bottom of the second connecting hole is fixedly mounted on the base plate, a second spring is provided between the movable adjustment rod and the base plate, the second spring is located on the outside of the limit rod, when the movable adjustment rod moves up and down, the limit rod can limit the movable adjustment rod to ensure its stability.

[0011] Preferably, a partition is fixedly installed in the middle position of the mold bin, the middle position of the front end of the mold bin is fixedly connected to the third rotating shaft, and the middle position of the rear end of the mold bin is fixedly connected to the second rotating shaft.

[0012] Preferably, a limit block is fixedly installed on both the front and rear sides of the sand bin, and the limit block can facilitate the installation and access between the sand bin and the mold bin.

[0013] Preferably, the length of the rotating groove is equal to the side length of the sand bin. When the bottom surface of the sand bin is located on the bottom plate, the limit blocks are located exactly on the front and rear sides of the rotating groove, so as to limit the sand bin.

[0014] Compared with the prior art, the present invention provides a horizontal sand casting device, which has the following beneficial effects:

[0015] 1. The horizontal sand casting device is provided with a molding component. When the pressure plate moves downward, it will squeeze the sand bin. During the process of the pressure plate squeezing the sand bin, the sand bin squeezes the mold bin. The mold bin will drive the second rotating shaft and the third rotating shaft to move downward. The downward movement of the second rotating shaft and the third rotating shaft will drive the movable adjustment rod to move downward in the adjustment bin of the fixed plate. The limit rod will make the movable adjustment rod move smoothly. The downward movement of the movable adjustment rod will compress the second spring. The compression of the second spring will provide an upward force for the movable adjustment rod, so that the movable adjustment rod provides an upward force to the third rotating shaft and the second rotating shaft, which will make The mold bin and the sand bin above the mold bin are squeezed more fully, which is convenient for molding the sand in the upper sand bin; when the second rotating shaft and the third rotating shaft move downward to the bottom of the mold bin and the limit blocks at both ends of the sand bin hit the bottom plate, the limit blocks will no longer move downward, and the bottom plate will provide an upward force to the limit blocks below, and the limit blocks will make the squeeze between the sand bin below and the mold bin more sufficient, which is convenient for molding the sand in the sand bin below, and this process will mold the sand above and below the mold bin at the same time, thereby improving production efficiency. At the same time, the sand molds in the upper and lower sand bins are fully squeezed to ensure the quality of sand mold molding.

[0016] 2. The horizontal sand casting device is provided with an adjusting component. When the sand mold is formed, the compressor is controlled to drive the first connecting plate to move upward. The upward movement of the first connecting plate will drive the movable connecting rod and the first spring to move upward. The upward movement of the movable connecting rod will drive the pressure plate to move upward. At this time, the second spring will provide an upward force for the movable adjusting rod, so that the movable adjusting rod provides an upward force for the third rotating shaft and the second rotating shaft, and the second rotating shaft and the third rotating shaft will drive the mold bin to move upward and reset. At this time, the first gear is controlled to rotate to drive the second gear to rotate. When the second gear rotates, it will drive the first rotating shaft to rotate. The rotation of the first rotating shaft will drive the first connecting rod to rotate. The rotation of the first connecting rod will drive the movable side plate to rotate. The rotation of the movable side plates on both sides of the adjusting bin can open the two sides of the adjusting component. At this time, the turntable is rotated, and the turntable will drive the third rotating shaft to rotate, thereby driving the mold bin to rotate. The sand bins on both sides of the mold bin are taken out from the left and right sides of the adjusting component respectively, and the sand molds in the two sand bins are taken out and spliced, so that casting in the sand mold can be completed, thereby improving production efficiency.

[0017] 3. The horizontal sand casting device, by setting a movable component, controls the rotation of the first gear to drive the rotation of the second gear, the rotation of the second gear will drive the rotation of the first rotating shaft, the rotation of the first rotating shaft will drive the rotation of the first connecting rod, the rotation of the first connecting rod will drive the movable side plate to rotate, the movable side plates on both sides of the adjustment bin can rotate to take out the molding components between the adjustment components, when the movable side plates are rotated to fit with the fixed plates, the two movable side plates fit with the two sides of the mold bin to fix its left and right sides, and no rotation will occur, the mold bin is limited, so it is convenient to take out and install the mold bin, easy to operate, and improve production efficiency.

[0018] 4. The horizontal sand casting device is provided with a movable adjustment rod. The mold bin drives the second rotating shaft and the third rotating shaft to move downward. The downward movement of the second rotating shaft and the third rotating shaft drives the movable adjustment rod to move downward in the adjustment bin of the fixed plate. The limit rod makes the movable adjustment rod move smoothly. The downward movement of the movable adjustment rod compresses the second spring. The compression of the second spring provides an upward force for the movable adjustment rod, so that the movable adjustment rod provides an upward force for the third rotating shaft and the second rotating shaft, which makes the mold bin and the sand bin above the mold bin more fully squeezed, which is convenient for molding the sand in the upper sand bin. When the second rotating shaft and the third rotating shaft move downward to the limit blocks at both ends of the sand bin at the bottom of the mold bin and touch the bottom plate, the limit blocks will no longer move downward. At this time, the bottom plate provides an upward force for the limit blocks below, and the limit blocks make the squeeze between the lower sand bin and the mold bin more sufficient, which is convenient for molding the sand in the lower sand bin. In this process, the sand above and below the mold bin will be molded at the same time, thereby improving production efficiency.

[0019] 5. The horizontal sand casting device can produce multiple identical sand molds by repeatedly adding sand to the upper and lower sides of the partition and fixing the mold bin and the sand bin, and repeating the operation steps. By replacing the mold in the partition, different sand molds can be made and products of different shapes can be produced, thereby improving the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the bottom plate structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the active component of the present invention;

[0023] Figure 4 This is a schematic diagram of the front structure of the front fixing plate of the present invention;

[0024] Figure 5 It is a schematic diagram of the back structure of the rear fixing plate of the present invention;

[0025] Figure 6 This is a schematic diagram of the internal structure of the fixing plate of the present invention;

[0026] Figure 7 It is a schematic diagram of the connection structure between the third rotating shaft and the movable adjustment rod of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the movable adjustment rod of the present invention;

[0028] Fig. 9 It is a schematic diagram of the structure of the molding assembly of the present invention;

[0029] Fig.10 It is a schematic diagram of the mold bin structure of the present invention.

[0030] In the figure: 100, bottom plate; 101, rotating groove; 102, groove; 103, first gear; 104, bracket; 105, compressor; 106, first connecting plate; 107, movable connecting rod; 108, first spring; 109, pressure plate; 200, movable assembly; 201, movable side plate; 202, first connecting rod; 203, first rotating shaft; 204, second gear; 205, second connecting rod; 300, Adjustment assembly; 301, fixed plate; 302, adjustment bin; 303, adjustment slot; 304, second rotating shaft; 305, third rotating shaft; 306, turntable; 307, movable adjustment rod; 308, limit rod; 309, second spring; 310, first connecting hole; 311, second connecting hole; 312, hole; 400, molding assembly; 401, mold bin; 402, partition; 403, sand bin; 404, limit block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figures 1 to 10 A horizontal sand casting device includes a base plate 100, a bracket 104, a compressor 105, a movable component 200, an adjusting component 300 and a molding component 400. The base plate 100 and the bracket 104 are used to support each component. The compressor 105 is used to provide pressure for the molding component 400. The movable component 200 is used to limit and fix the molding component 400 and take it. The adjusting component 300 plays an adjusting role when the molding component 400 is molded. The molding component 400 is used to extrude and mold the sand mold. An adjusting component 300 is fixedly connected to the front and rear sides of the base plate 100, and a movable component 200 is movably connected to the left and right sides of the base plate 100. The molding component 400 is located in the middle position above the base plate 100. A rotating groove 101 is provided in the middle position of the base plate 100. The rotating groove 101 facilitates the rotation of the molding component 400 above the base plate 100.

[0033] The adjustment component 300 includes a fixed plate 301, an adjustment chamber 302 is opened in the middle position inside the fixed plate 301, a hole 312 is opened on the left and right sides above the adjustment chamber 302, and an adjustment groove 303 is opened in the middle position of the front and back sides of the adjustment chamber 302. The bottom of the fixed plate 301 is fixedly installed on the base plate 100.

[0034] The molding assembly 400 includes a mold bin 401 and two sand bins 403 , and the openings of the two sand bins 403 are both facing the mold bin 401 .

[0035] A groove 102 is formed on both sides of the bottom plate 100 , and a first gear 103 is movably installed in the groove 102 .

[0036] The movable component 200 includes a movable side plate 201, two first connecting rods 202 are movably installed on one side of the movable side plate 201, a first rotating shaft 203 is fixedly installed between the first rotating shaft 202, a second gear 204 is fixedly installed at the middle position of the first rotating shaft 203, the second gear 204 is engaged with the groove 102, and a second connecting rod 205 is movably installed at both ends of the first rotating shaft 203, and the second connecting rod 205 is fixedly connected to the base plate 100.

[0037] A movable adjustment rod 307 is movably installed in the adjustment bin 302, a first connecting hole 310 is opened in the middle position of the movable adjustment rod 307, second connecting holes 311 are opened on both sides of the movable adjustment rod 307, a third rotating shaft 305 is movably installed in the first connecting hole 310 in the fixed plate 301 on the front side of the base plate 100, a second rotating shaft 304 is movably installed in the first connecting hole 310 in the fixed plate 301 on the rear side of the base plate 100, and a turntable 306 is fixedly installed on the outer side of the third rotating shaft 305.

[0038] A limiting rod 308 is movably connected in the second connecting hole 311, and the top of the limiting rod 308 is located in the hole 312. The bottom of the second connecting hole 311 is fixedly installed on the base plate 100. A second spring 309 is provided between the movable adjustment rod 307 and the base plate 100. The second spring 309 is located on the outside of the limiting rod 308. When the movable adjustment rod 307 moves up and down, the limiting rod 308 can limit the movable adjustment rod 307 to ensure its stability.

[0039] A partition plate 402 is fixedly installed in the middle of the mold bin 401 , the middle of the front end of the mold bin 401 is fixedly connected to the third rotating shaft 305 , and the middle of the rear end of the mold bin 401 is fixedly connected to the second rotating shaft 304 .

[0040] A limit block 404 is fixedly installed on both the front and rear sides of the sand bin 403 , and the limit block 404 can facilitate the installation and access between the sand bin 403 and the mold bin 401 .

[0041] The length of the rotating groove 101 is equal to the side length of the sand bin 403 . When the bottom surface of the sand bin 403 is located on the bottom plate 100 , the limiting blocks 404 are just located at the front and rear sides of the rotating groove 101 , so as to limit the sand bin 403 .

[0042] When in use, a motor can be set in the bottom plate 100 to connect the first gear 103, control the first gear 103 to rotate and drive the second gear 204 to rotate. When the second gear 204 rotates, it will drive the first shaft 203 to rotate. The rotation of the first shaft 203 will drive the first connecting rod 202 to rotate. The rotation of the first connecting rod 202 will drive the movable side plate 201 to rotate. The movable side plates 201 on both sides of the adjustment bin 302 can rotate to take out the forming assembly 400 between the adjustment assemblies 300. The second connecting rod 205 can limit the first connecting rod 202. The movable side plate 201 stops, and the upper and lower sand bins 403 of the molding assembly 400 can be taken out from both sides of the mold bin 401, and the mold is fixed on one side of the partition 402 in the mold bin 401, and the partition 402 and the mold are covered with sand, and then the sand bin 403 is aligned with the mold bin 401 and inserted and fixed, and the turntable 306 is rotated, and the turntable 306 will drive the third rotating shaft 305 to rotate, thereby driving the mold bin 401 to rotate, and the other side of the mold bin 401 is turned upward, at this time, the first gear 103 on one side is controlled to rotate to drive the second gear 204 to rotate, and the third gear 305 is driven to rotate. When the second gear 204 rotates, it will drive the first rotating shaft 203 to rotate. The rotation of the first rotating shaft 203 will drive the first connecting rod 202 to rotate. The rotation of the first connecting rod 202 will drive the movable side plate 201 to rotate. The movable side plate 201 rotates until it fits with the fixed plate 301, and the mold bin 401 fits with the movable side plate 201. The mold bin 401 will not rotate anymore. At this time, another mold is fixed to the corresponding position of the other surface of the partition 402 in the mold bin 401, and the partition 402 and the mold are covered with sand, and then the sand bin 403 is aligned with the mold bin 40 1 is inserted and fixed. At this time, the two sand bins 403 are installed with the mold bin 401. Then the first gear 103 on the other side is controlled to rotate to drive the second gear 204 to rotate. When the second gear 204 rotates, it will drive the first rotating shaft 203 to rotate. The rotation of the first rotating shaft 203 will drive the first connecting rod 202 to rotate. The rotation of the first connecting rod 202 will drive the movable side plate 201 to rotate. The movable side plate 201 rotates to fit with the fixed plate 301. At this time, the two movable side plates 201 fit with the two sides of the mold bin 401 to fix its left and right sides, and it will not rotate.

[0043] Starting the compressor 105 drives the first connecting plate 106 to move downward, and the first connecting plate 106 moving downward will drive the movable connecting rod 107 and the first spring 108 to move downward, and the movable connecting rod 107 moving downward will drive the pressure plate 109 to move downward, and the pressure plate 109 moving downward will squeeze the sand bin 403. During the squeezing process of the pressure plate 109 on the sand bin 403, the sand bin 403 squeezes the mold bin 401, and the mold bin 401 will drive the second rotating shaft 304 and the third rotating shaft 305 to move downward, and the downward movement of the second rotating shaft 304 and the third rotating shaft 305 will drive the movable adjustment rod 307 to move downward in the adjustment bin 302 of the fixed plate 301, and the limit rod 308 will make the movable adjustment rod 307 move smoothly, and the downward movement of the movable adjustment rod 307 will compress the second spring 309, and the compression of the second spring 309 will provide an upward force for the movable adjustment rod 307, so that The movable adjustment rod 307 provides an upward force to the third rotating shaft 305 and the second rotating shaft 304, which will make the mold bin 401 and the sand bin 403 above the mold bin 401 squeeze more fully, making it easier to mold the sand in the upper sand bin 403. When the second rotating shaft 304 and the third rotating shaft 305 move downward to the bottom of the mold bin 401, the limit blocks 404 at both ends of the sand bin 403 hit the bottom plate 100, the limit blocks 404 will no longer move downward. At this time, the bottom plate 100 will provide an upward force to the lower limit block 404, and the limit block 404 will make the squeeze between the lower sand bin 403 and the mold bin 401 more sufficient, making it easier to mold the sand in the lower sand bin 403. This process will simultaneously mold the sand above and below the mold bin 401, thereby improving production efficiency. At the same time, the sand molds in the upper and lower sand bins 403 are fully squeezed to ensure the quality of sand mold molding.

[0044] After the sand mold is formed, the compressor 105 is controlled to drive the first connecting plate 106 to move upward. The upward movement of the first connecting plate 106 will drive the movable connecting rod 107 and the first spring 108 to move upward. The upward movement of the movable connecting rod 107 will drive the pressure plate 109 to move upward. At this time, the second spring 309 will provide an upward force for the movable adjustment rod 307, so that the movable adjustment rod 307 provides an upward force for the third rotating shaft 305 and the second rotating shaft 304. Then, the second rotating shaft 304 and the third rotating shaft 305 will drive the mold bin 401 to move upward and reset. At this time, the first gear 103 is controlled to rotate to drive the second gear 204 to rotate When the second gear 204 rotates, it will drive the first rotating shaft 203 to rotate. The rotation of the first rotating shaft 203 will drive the first connecting rod 202 to rotate. The rotation of the first connecting rod 202 will drive the movable side plate 201 to rotate. The movable side plates 201 on both sides of the adjusting bin 302 can rotate to open the two sides of the adjusting assembly 300. At this time, the turntable 306 is rotated, and the turntable 306 will drive the third rotating shaft 305 to rotate, thereby driving the mold bin 401 to rotate. The sand bins 403 on both sides of the mold bin 401 are taken out from the left and right sides of the adjusting assembly 300 respectively, and the sand molds in the two sand bins 403 are taken out and spliced, so that casting in the sand mold can be completed.

[0045] Repeat adding sand to the upper and lower sides of the partition 402 and fixing the mold bin 401 and the sand bin 403. Repeat the above steps to produce multiple identical sand molds for production. By replacing the mold in the partition 402, different sand molds can be made and products of different shapes can be produced.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A horizontal sand casting device, comprising a base plate (100), a bracket (104), a compressor (105), a movable component (200), an adjustment component (300) and a molding component (400), wherein the base plate (100) and the bracket (104) are used to support the various components, the compressor (105) is used to provide pressure for the molding component (400), the movable component (200) is used to limit and fix the molding component (400) and to take it out, the adjustment component (300) plays an adjustment role when the molding component (400) is being molded, and the molding component (400) is used to extrude and mold the sand mold, characterized in that: An adjusting assembly (300) is fixedly connected to both the front and rear sides of the bottom plate (100), and a movable assembly (200) is movably connected to both the left and right sides of the bottom plate (100). A forming assembly (400) is located in the middle of the bottom plate (100). A rotation groove (101) is provided in the middle of the bottom plate (100), and the rotation groove (101) facilitates the forming assembly (400) to rotate above the bottom plate (100); The adjustment assembly (300) comprises a fixing plate (301), an adjustment chamber (302) is provided in the middle of the fixing plate (301), a hole (312) is provided on both the left and right sides above the adjustment chamber (302), and adjustment grooves (303) are provided in the middle of both the front and rear sides of the adjustment chamber (302), and the bottom of the fixing plate (301) is fixedly mounted on the bottom plate (100); The molding assembly (400) comprises a mold bin (401) and two sand bins (403), and the openings of the two sand bins (403) are both facing the mold bin (401); A movable adjustment rod (307) is movably installed in the adjustment chamber (302); a first connection hole (310) is provided in the middle of the movable adjustment rod (307); second connection holes (311) are provided on both sides of the movable adjustment rod (307); a third rotating shaft (305) is movably installed in the first connection hole (310) in the fixed plate (301) on the front side of the bottom plate (100); a second rotating shaft (304) is movably installed in the first connection hole (310) in the fixed plate (301) on the rear side of the bottom plate (100); and a rotating disk (306) is fixedly installed outside the third rotating shaft (305); A limiting rod (308) is movably connected in the second connection hole (311), the top of the limiting rod (308) is located in the hole (312), the bottom of the second connection hole (311) is fixedly mounted on the bottom plate (100), a second spring (309) is provided between the movable adjustment rod (307) and the bottom plate (100), the second spring (309) is located outside the limiting rod (308), when the movable adjustment rod (307) moves up and down, the limiting rod (308) limits the movable adjustment rod (307) to ensure its stability; A partition plate (402) is fixedly installed in the middle of the mold bin (401); the middle of the front end of the mold bin (401) is fixedly connected to the third rotating shaft (305); and the middle of the rear end of the mold bin (401) is fixedly connected to the second rotating shaft (304); A limit block (404) is fixedly installed on both the front and rear sides of the sand bin (403), and the limit block (404) facilitates the installation and access between the sand bin (403) and the mold bin (401); The length of the rotating groove (101) is equal to the side length of the sand bin (403). When the bottom surface of the sand bin (403) is located on the bottom plate (100), the limiting blocks (404) are located at the front and rear sides of the rotating groove (101) to limit the position of the sand bin (403). A groove (102) is provided on both left and right sides of the bottom plate (100), and a first gear (103) is movably installed in the groove (102); The movable assembly (200) comprises a movable side plate (201), two first connecting rods (202) are movably mounted on one side of the movable side plate (201), a first rotating shaft (203) is fixedly mounted between the first rotating shafts (202), a second gear (204) is fixedly mounted in the middle of the first rotating shaft (203), the second gear (204) is meshed with the groove (102), a second connecting rod (205) is movably mounted at both ends of the first rotating shaft (203), and the second connecting rod (205) is fixedly connected to the bottom plate (100).

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