Prefabricated part moving device for house construction

Abstract

The invention relates to the technical field of carrying devices, in particular to a house construction prefabricated part carrying device which comprises a carrying vehicle body, a sliding rod, a positioning structure, a power supply structure, a heat dissipation structure, an adjusting structure, a hoisting structure and a protection structure. By arranging the positioning structure, a prefabricated slab in transportation can be clamped, the prefabricated slab is prevented from shaking and falling off from the hook, so that the safety in the carrying process is improved, a limiting block in the adjusting structure is clamped with a sliding rod, the sliding adjusting seat can be fixed quickly, the fixing efficiency is improved, and the overall adjusting efficiency is improved; the hoisting structure is arranged to conveniently hoist a prefabricated slab to cooperate with the carrier body for carrying, the heat dissipation structure can achieve heat dissipation of the photovoltaic panel and ensure stable operation of the photovoltaic panel, in addition, dust on the surface of the photovoltaic panel can be blown away, dust attachment is prevented from affecting sunlight irradiation, the protection structure is arranged to conveniently protect unused jacks, and the service life of the photovoltaic panel is prolonged. And dust and other impurities are prevented from entering the socket to affect subsequent normal use.

Description

Technical Field

[0001] The present invention relates to the technical field of moving devices, in particular to a prefabricated component moving device for building construction. Background Art

[0002] Prefabricated parts are building components that are prefabricated in factories or construction sites. They are characterized by standardization and high efficiency. In the process of house construction, the use of prefabricated parts is becoming more and more widespread, such as prefabricated beams and prefabricated panels. These prefabricated panels are usually transported to designated locations by transport trucks during secondary transportation within the construction site.

[0003] However, when prefabricated panels are transported by a transport truck, chains and hooks are usually installed on the adjustment sleeves sliding on the slide rods, and the four hooks are used to hook the holes on the prefabricated panels for transportation. During transportation, due to the effects of chains and inertia, the prefabricated panels are prone to shaking, causing the prefabricated panels to fall from the hooks, which has low safety. At the same time, the adjustment sleeves are installed on the slide rods with bolts. When adjusting, they need to be turned multiple times with a wrench to fix them, and the adjustment efficiency is low. The transport truck is usually equipped with a motor and a transmission assembly to provide auxiliary power for the wheels to reduce the burden of transportation. At the same time, photovoltaic panels and battery boxes are installed on the vehicle to power the motor. However, in actual use, the continuous rotation of the wheels will raise dust, which adheres to the photovoltaic panels, blocking sunlight and affecting the power generation efficiency of the photovoltaic panels. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides a prefabricated component moving device for house construction.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a prefabricated component transporting device for house construction, comprising a transport vehicle body, a slide bar mounted on the transport vehicle body, a positioning structure mounted on the transport vehicle body, a power supply structure mounted on the transport vehicle body, a heat dissipation structure mounted on the transport vehicle body, an adjustment structure mounted on the slide bar, and a hoisting structure mounted on the adjustment structure; The positioning structure includes a mounting frame fixedly connected to the transport vehicle body and a first screw rod rotatably connected to the mounting frame, two adjusting sleeves are slidably connected to the mounting frame, the adjusting sleeve is threadedly connected to the first screw rod, and the threads at both ends of the first screw rod are in opposite directions. A slide is slidably connected to the adjusting sleeve, and a first rubber pad is fixedly connected to the slide rod. The adjusting sleeve is provided with a guide groove, and the slide rod slides in cooperation with the guide groove. A hydraulic rod is installed on the adjusting sleeve, and the telescopic end of the hydraulic rod is fixedly connected to a connecting block, and the connecting block is fixedly connected to the slide rod. A motor is installed on the mounting frame, and the first screw rod is fixedly connected to the output shaft of the motor.

[0006] Specifically, one of the adjusting sleeves is fixedly connected to a guide rod, and the other adjusting sleeve is fixedly connected to a guide sleeve, and the guide rod is slidably connected to the guide sleeve.

[0007] Specifically, the power supply structure includes two photovoltaic panels installed on the transport vehicle body and a positioning seat fixedly connected to the transport vehicle body. The photovoltaic panels are slidably connected to the positioning seat. A positioning rod is fixedly connected to the photovoltaic panel, and the positioning rod is engaged with the positioning seat. A knob is threadedly connected to the positioning seat, and the knob is engaged with the positioning rod. A battery box is installed on the transport vehicle body.

[0008] Specifically, the heat dissipation structure includes four mounting sleeves fixedly connected to the transport vehicle body and a mounting plate slidably connected to the mounting sleeves. A fan is installed on the mounting plate, and a heat dissipation plate is installed on the photovoltaic panel.

[0009] Specifically, a mounting ring is fixedly connected to the mounting plate, a mounting shaft is rotatably connected to the mounting ring, a stopper is fixedly connected to the mounting shaft, and a torsion spring is fixedly connected between the mounting shaft and the mounting ring.

[0010] Specifically, the adjustment structure includes an adjustment seat slidably connected to the slide rod and a limit block slidably connected to the adjustment seat. The slide rod is provided with a plurality of limit slots, and the limit block is engaged with one of the limit slots.

[0011] Specifically, a connecting rod is fixedly connected to the limit block, and the connecting rod is slidably connected to the adjustment seat. A pressing block is fixedly connected to the connecting rod, and the pressing block is slidably connected to the adjustment seat. A first spring is fixedly connected between the pressing block and the adjustment seat.

[0012] Specifically, the hoisting structure includes a mounting block slidably connected to the adjustment seat and a mounting seat fixedly connected to the mounting block, a chain is installed on the mounting seat, and a hook is installed on the chain.

[0013] Specifically, a second screw rod is threadedly connected to the adjustment seat, and the second screw rod is plugged into the mounting block.

[0014] Specifically, a protective structure is provided on the transport vehicle body, and the protective structure includes an adjustment plate slidably connected to the transport vehicle body and a second rubber pad slidably connected to the adjustment plate, the second rubber pad is in contact with the transport vehicle body, a connecting plate is fixedly connected to the second rubber pad, the connecting plate is slidably connected to the adjustment plate, a pull plate is fixedly connected to the adjustment plate, and a second spring is fixedly connected between the connecting plate and the adjustment plate.

[0015] The beneficial effects of the present invention are: (1) The present invention provides a prefabricated component transporting device for house construction. The positioning structure can clamp the prefabricated panels during transportation, preventing the prefabricated panels from shaking and falling off the hooks, thereby improving safety during transportation.

[0016] (2) The present invention relates to a prefabricated component moving device for house construction. The slide bar is provided with an adjustment structure, and the adjustment structure is provided with a hoisting structure. The limit block in the adjustment structure engages with the slide bar, which can quickly fix the adjustment seat after sliding, thereby improving the fixing efficiency and thus improving the overall adjustment efficiency. The setting of the hoisting structure makes it easy to lift the prefabricated panel and transport it in conjunction with the transport vehicle body.

[0017] (3) The present invention relates to a prefabricated component moving device for house construction. The transport vehicle body is provided with a heat dissipation structure and a protective structure. The heat dissipation structure can dissipate heat from the photovoltaic panels to ensure their stable operation. In addition, the heat dissipation structure can blow away dust on the surface of the photovoltaic panels to prevent dust from adhering and affecting sunlight. The setting of the protective structure facilitates the protection of unused sockets to prevent dust and other impurities from entering the sockets and affecting subsequent normal use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and examples.

[0019] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a prefabricated component moving device for house construction provided by the present invention; Figure 2 This is a schematic diagram of the connection structure between the slide bar and the transport vehicle body of the present invention; Figure 3 for Figure 2 An enlarged schematic diagram of the structure of section A is shown; Figure 4 This is a schematic diagram of the connection structure between the connecting rod and the adjustment seat of the present invention; Figure 5 It is a schematic diagram of the connection structure between the slide plate and the adjustment sleeve of the present invention; Figure 6 This is a schematic diagram of the connection structure between the power storage box and the transport vehicle body of the present invention; Figure 7 This is a schematic diagram of the connection structure between the mounting plate and the mounting sleeve of the present invention; Figure 8 This is a schematic diagram of the connection structure between the adjustment plate and the transport vehicle body of the present invention; Figure 9 for Figure 8 The enlarged schematic diagram of the structure of part B is shown.

[0020] In the figure: 1. Truck body; 2. Slide rod; 3. Positioning structure; 301. Mounting frame; 302. First screw rod; 303. Motor; 304. Adjustment sleeve; 305. Slide plate; 306. First rubber pad; 307. Guide groove; 308. Hydraulic rod; 309. Connecting block; 310. Guide rod; 311. Guide sleeve; 4. Power supply structure; 401. Photovoltaic panel; 402. Positioning seat; 403. Positioning rod; 404. Knob; 405. Battery box; 5. Heat dissipation structure; 501. Mounting sleeve; 502. Mounting plate; 503. Fan; 504. Heat dissipation plate; 505. Mounting ring; 506. Mounting shaft; 507. Stop block; 508. Torsion spring; 6. Adjustment structure; 601. Adjustment seat; 602. Limit block; 603. Limit groove; 604. Connecting rod; 605. Pressing block; 606. First spring; 7. Lifting structure; 701. Mounting block; 702. Mounting seat; 703. Chain; 704. Hook; 705. Second screw rod; 8. Protection structure; 801. Adjustment plate; 802. Second rubber pad; 803. Connecting plate; 804. Second spring; 805. Pull plate. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, the present invention provides a prefabricated component moving device for house construction, comprising a transport vehicle body 1, a slide bar 2 mounted on the transport vehicle body 1, a positioning structure 3 mounted on the transport vehicle body 1, a power supply structure 4 mounted on the transport vehicle body 1, a heat dissipation structure 5 mounted on the transport vehicle body 1, an adjustment structure 6 mounted on the slide bar 2, and a hoisting structure 7 mounted on the adjustment structure 6; the positioning structure 3 comprises a mounting frame 301 fixedly connected to the transport vehicle body 1 and a first screw rod 302 rotatably connected to the mounting frame 301, two adjustment sleeves 304 are slidably connected in the mounting frame 301, and the The adjusting sleeve 304 is threadedly connected to the first screw rod 302, and the thread directions of the two ends of the first screw rod 302 are opposite. A slide plate 305 is slidably connected to the adjusting sleeve 304, and a first rubber pad 306 is fixedly connected to the slide plate 305. A guide groove 307 is provided on the adjusting sleeve 304, and the slide plate 305 slides in cooperation with the guide groove 307. A hydraulic rod 308 is installed on the adjusting sleeve 304, and a connecting block 309 is fixedly connected to the telescopic end of the hydraulic rod 308. The connecting block 309 is fixedly connected to the slide plate 305. A motor 303 is installed on the mounting frame 301, and the first screw rod 302 is fixedly connected to the output shaft of the motor 303.

[0023] Specifically, such as Figure 5 As shown, one of the adjustment sleeves 304 is fixedly connected to a guide rod 310, and the other adjustment sleeve 304 is fixedly connected to a guide sleeve 311. The guide rod 310 is slidably connected to the guide sleeve 311, and the guide rod 310 and the guide sleeve 311 slide together to ensure smooth movement of the adjustment sleeve 304.

[0024] Specifically, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 and Figure 8As shown, the power supply structure 4 includes two photovoltaic panels 401 installed on the transport vehicle body 1 and a positioning seat 402 fixedly connected to the transport vehicle body 1, the photovoltaic panels 401 are slidably connected to the positioning seat 402, a positioning rod 403 is fixedly connected to the photovoltaic panel 401, the positioning rod 403 is engaged with the positioning seat 402, a knob 404 is threadedly connected to the positioning seat 402, and the knob 404 is engaged with the positioning rod 403, and a storage box 405 is installed on the transport vehicle body 1, and the electric energy generated by the photovoltaic panels 401 will be transmitted through the circuit and stored in the storage box 405. The heat dissipation structure 5 includes four mounting sleeves 501 fixedly connected to the transport vehicle body 1 and a mounting plate 502 slidably connected to the mounting sleeve 501. A fan 503 is installed on the mounting plate 502, and a heat sink 504 is installed on the photovoltaic panel 401. The fan 503 can effectively take away the heat from the heat sink 504, realize heat dissipation of the photovoltaic panel 401, and ensure its stable operation. In addition, when the fan 503 is started, it can also blow away the dust on the surface of the photovoltaic panel 401 to prevent dust from adhering to and affecting sunlight exposure. A mounting ring 505 is fixedly connected to the mounting plate 502, and a mounting shaft 506 is rotatably connected to the mounting ring 505. A stopper 507 is fixedly connected to the mounting shaft 506. The stopper 507 blocks and limits the mounting plate 502, so that the mounting plate 502 and the mounting sleeve 501 can be quickly disassembled and assembled, thereby improving the disassembly and assembly efficiency. A torsion spring 508 is fixedly connected between the mounting shaft 506 and the mounting ring 505.

[0025] Specifically, such as Figure 1 and Figure 4As shown, the adjustment structure 6 includes an adjustment seat 601 slidably connected to the slide bar 2 and a limit block 602 slidably connected to the adjustment seat 601. The adjustment seat 601 can be slidably matched with the slide bar 2 to flexibly adjust the position of the chain 703 according to prefabricated panels of different lengths. The slide bar 2 is provided with a plurality of limit grooves 603. The limit block 602 is engaged with one of the limit grooves 603. By engaging the limit block 602 with the slide bar 2, the adjustment seat 601 after sliding can be quickly fixed, thereby improving the fixing efficiency and thus improving the overall adjustment efficiency. A connecting rod 604 is fixedly connected to the limit block 602. The connecting rod 604 is slidably connected to the adjustment seat 601, a pressing block 605 is fixedly connected to the connecting rod 604, the pressing block 605 is slidably connected to the adjustment seat 601, a first spring 606 is fixedly connected between the pressing block 605 and the adjustment seat 601, the lifting structure 7 includes a mounting block 701 slidably connected to the adjustment seat 601 and a mounting seat 702 fixedly connected to the mounting block 701, a chain 703 is installed on the mounting seat 702, a hook 704 is installed on the chain 703, a second screw rod 705 is threadedly connected to the adjustment seat 601, and the second screw rod 705 is plugged into the mounting block 701.

[0026] Specifically, such as Figure 8 and Figure 9 As shown, a protective structure 8 is provided on the transport vehicle body 1, and the protective structure 8 includes an adjusting plate 801 slidably connected to the transport vehicle body 1 and a second rubber pad 802 slidably connected to the adjusting plate 801, the second rubber pad 802 contacts the transport vehicle body 1, and a connecting plate 803 is fixedly connected to the second rubber pad 802, and the connecting plate 803 is slidably connected to the adjusting plate 801, and a pulling plate 805 is fixedly connected to the adjusting plate 801. When the adjusting plate 801 is pulled, the adjusting plate 801 drives the second rubber pad 802 to move to an unused socket. After releasing the pulling plate 805, the second rubber pad 802 contacts the socket under the action of the second spring 804, so as to protect the unused socket and prevent dust and other impurities from entering the socket and affecting subsequent normal use. A second spring 804 is fixedly connected between the connecting plate 803 and the adjusting plate 801.

[0027] When the present invention is in use, when it is necessary to transport the prefabricated board, by starting the motor 303, the output shaft of the motor 303 drives the first screw rod 302 to rotate. Since the threads at both ends of the first screw rod 302 are in opposite directions, the threads drive the two adjustment sleeves 304 to slide toward each other, and the guide rod 310 and the guide sleeve 311 slide in cooperation to ensure that the adjustment sleeve 304 moves smoothly. At the same time, the adjustment sleeve 304 drives the slide plate 305 and the first rubber pad 306 to clamp the prefabricated board. After the clamping is completed, the hydraulic rod 308 is started, and its telescopic end contracts to drive the connecting block 309 to move upward, thereby driving the slide plate 305 rises, providing an upward force for the prefabricated panel to lift it, and the slide plate 305 is driven by the hydraulic rod 308 to lift the prefabricated panel, which reduces the difficulty of the operator's work. During the lifting process, one operator is arranged to keep the slide bar 2 parallel to the ground, and the other two operators use the hooks 704 on the chain 703 to hook the holes on the prefabricated panel, and then use the transport vehicle body 1 to transport the prefabricated panel. Since the slide plate 305 always keeps the prefabricated panel in a clamping state during transportation, the prefabricated panel will not shake and fall off the hook 704, thereby improving the safety during transportation; When the chain 703 is to be replaced, the second screw rod 705 is rotated so that its end is no longer plugged into the mounting block 701, and then the mounting block 701 can be slid out of the engagement state with the upper limit groove 603 of the slide bar 2. When the photovoltaic panel 401 is in use, the fan 503 can be started. When the fan 503 is in operation, air is blown toward the photovoltaic panel 401 and the heat dissipation plate 504. The heat generated by the photovoltaic panel 401 is transferred to the heat dissipation plate 504. The fan 503 can effectively take away the heat on the heat dissipation plate 504, thereby achieving heat dissipation for the photovoltaic panel 401 and ensuring its stable operation. In addition, the fan 503 can also be started to blow away dust on the surface of the photovoltaic panel 401 to prevent dust from adhering to and affecting sunlight exposure. To remove the fan 503, rotate the stopper 507. The stopper 507 drives the mounting shaft 506 to rotate. When the mounting shaft 506 rotates, the torsion spring 508 is deformed. At the same time, the stopper 507 no longer blocks the mounting plate 502. At this time, the mounting plate 502 can be removed from the mounting sleeve 501, which is convenient for inspection and maintenance of the fan 503. The stopper 507 blocks and limits the mounting plate 502, which can quickly achieve the positioning between the mounting plate 502 and the mounting sleeve 501. The disassembly and assembly improves the disassembly and assembly efficiency. When disassembling the photovoltaic panel 401, the knob 404 is turned so that it is no longer plugged into the positioning rod 403 through the threaded engagement with the positioning seat 402, so that the photovoltaic panel 401 can be disassembled. The electricity generated by the photovoltaic panel 401 will be transmitted through the circuit and stored in the storage box 405. For the unused interface of the storage box 405, the pulling plate 805 can be pulled, and the pulling plate 805 drives the connecting plate 803 to move, so that the second spring 804 contracts. At the same time, the connecting plate 803 drives the second rubber pad 802 to break away from the conflicting state with the transport vehicle body 1, and then the adjusting plate 801 is pulled so that the adjusting plate 801 drives the second rubber pad 802 to move to the unused socket. After releasing the pulling plate 805, the second rubber pad 802 conflicts with the socket under the action of the second spring 804, thereby protecting the unused socket and preventing impurities such as dust from entering the socket and affecting subsequent normal use.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0029] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A prefabricated component moving device for housing construction, characterized in that: The transport vehicle comprises a transport vehicle body (1), a slide bar (2) mounted on the transport vehicle body (1), a positioning structure (3) mounted on the transport vehicle body (1), a power supply structure (4) mounted on the transport vehicle body (1), a heat dissipation structure (5) mounted on the transport vehicle body (1), an adjustment structure (6) mounted on the slide bar (2), and a hoisting structure (7) mounted on the adjustment structure (6); The positioning structure (3) comprises a mounting frame (301) fixedly connected to the transport vehicle body (1) and a first screw rod (302) rotatably connected to the mounting frame (301); two adjustment sleeves (304) are slidably connected in the mounting frame (301); the adjustment sleeves (304) are threadedly connected to the first screw rod (302); the threads at both ends of the first screw rod (302) are in opposite directions; a slide plate (305) is slidably connected to the adjusting sleeve (304); and a first screw rod (305) is fixedly connected to the slide plate (305). A rubber pad (306) is provided on the adjusting sleeve (304), a guide groove (307) is provided on the adjusting sleeve (304), the slide plate (305) is slidably matched with the guide groove (307), a hydraulic rod (308) is installed on the adjusting sleeve (304), a connecting block (309) is fixedly connected to the telescopic end of the hydraulic rod (308), the connecting block (309) is fixedly connected to the slide plate (305), a motor (303) is installed on the mounting frame (301), and the first screw rod (302) is fixedly connected to the output shaft of the motor (303).

2. The prefabricated component moving device for building construction according to claim 1, characterized in that: A guide rod (310) is fixedly connected to one of the adjustment sleeves (304), and a guide sleeve (311) is fixedly connected to the other adjustment sleeve (304). The guide rod (310) and the guide sleeve (311) are slidably connected.

3. The prefabricated component moving device for house construction according to claim 1, characterized in that: The power supply structure (4) comprises two photovoltaic panels (401) mounted on the transport vehicle body (1) and a positioning seat (402) fixedly connected to the transport vehicle body (1); the photovoltaic panels (401) and the positioning seat (402) are slidably connected; a positioning rod (403) is fixedly connected to the photovoltaic panel (401); the positioning rod (403) is engaged with the positioning seat (402); a knob (404) is threadedly connected to the positioning seat (402); the knob (404) is engaged with the positioning rod (403); and a storage box (405) is mounted on the transport vehicle body (1).

4. The prefabricated component moving device for house construction according to claim 3, characterized in that: The heat dissipation structure (5) comprises four mounting sleeves (501) fixedly connected to the transport vehicle body (1) and a mounting plate (502) slidably connected to the mounting sleeves (501); a fan (503) is mounted on the mounting plate (502); and a heat dissipation plate (504) is mounted on the photovoltaic panel (401).

5. The prefabricated component moving device for house construction according to claim 4, characterized in that: A mounting ring (505) is fixedly connected to the mounting plate (502), a mounting shaft (506) is rotatably connected to the mounting ring (505), a stopper (507) is fixedly connected to the mounting shaft (506), and a torsion spring (508) is fixedly connected between the mounting shaft (506) and the mounting ring (505).

6. The prefabricated component moving device for house construction according to claim 1, characterized in that: The adjustment structure (6) comprises an adjustment seat (601) slidably connected to the slide rod (2) and a limit block (602) slidably connected to the adjustment seat (601); a plurality of limit slots (603) are provided on the slide rod (2); and the limit block (602) is engaged with one of the limit slots (603).

7. The prefabricated component moving device for building construction according to claim 6, characterized in that: A connecting rod (604) is fixedly connected to the limiting block (602), and the connecting rod (604) is slidably connected to the adjustment seat (601). A pressing block (605) is fixedly connected to the connecting rod (604), and the pressing block (605) is slidably connected to the adjustment seat (601). A first spring (606) is fixedly connected between the pressing block (605) and the adjustment seat (601).

8. The prefabricated component moving device for house construction according to claim 7, characterized in that: The hoisting structure (7) comprises a mounting block (701) slidably connected to the adjustment seat (601) and a mounting seat (702) fixedly connected to the mounting block (701), a chain (703) being mounted on the mounting seat (702), and a hook (704) being mounted on the chain (703).

9. The prefabricated component moving device for building construction according to claim 8, characterized in that: A second screw rod (705) is threadedly connected to the adjustment seat (601), and the second screw rod (705) is plugged into the mounting block (701).

10. The prefabricated component moving device for building construction according to claim 1, characterized in that: The transport vehicle body (1) is provided with a protective structure (8), the protective structure (8) comprising an adjustment plate (801) slidably connected to the transport vehicle body (1) and a second rubber pad (802) slidably connected to the adjustment plate (801), the second rubber pad (802) abutting against the transport vehicle body (1), a connecting plate (803) fixedly connected to the second rubber pad (802), the connecting plate (803) slidably connected to the adjustment plate (801), a pulling plate (805) fixedly connected to the adjustment plate (801), and a second spring (804) fixedly connected between the connecting plate (803) and the adjustment plate (801).

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