Building construction photovoltaic power generation support

Abstract

The utility model relates to the technical field of solar power generation, in particular to a building construction photovoltaic power generation support which comprises a platform, a support column and a photovoltaic panel. The top of the platform is fixedly connected with evenly-distributed supporting columns, the other ends of the supporting columns are fixedly connected with a photovoltaic panel, and one end of the photovoltaic panel is fixedly connected with a rainwater sensor. A water purification module used for rainwater treatment is installed above the platform, one side of the water purification module communicates with a water pump through a water pipe, and the other end of the water pipe at the output end of the water pump communicates with a spraying mechanism; when the water purification device is used, the photovoltaic panel is generally arranged in an inclined mode, the flow guide pipe can collect water in a centralized mode and then gather the water into the water purification module, and when the surface of the photovoltaic panel needs to be cleaned, the water in the water purification module can be driven to be pumped out by starting the water pump and discharged through the spraying mechanism. The purpose of automatically cleaning the surface of the photovoltaic panel is achieved.

Description

Technical Field

[0001] This utility model relates to the field of solar power generation technology, specifically a photovoltaic power generation support for building construction. Background Technology

[0002] Photovoltaic power generation is a technology that directly converts light energy into electrical energy using the photovoltaic effect at the semiconductor interface. It mainly consists of three parts: solar panels (modules), a controller, and an inverter. The main components are made up of electronic devices. Solar cells are connected in series and then encapsulated for protection to form large-area solar cell modules. Combined with components such as power controllers, this forms a photovoltaic power generation device.

[0003] During the use of photovoltaic panels, they are generally installed on the side of a mountain. Due to their higher altitude compared to flat land, dust easily accumulates on the surface of the photovoltaic panels, affecting their normal use. Manual cleaning is not only inefficient but also fails to guarantee the quality of cleaning. Natural rainwater is an effective cleaning medium. The applicant has conceived of using rainwater to automatically clean the surface of photovoltaic panels, which can effectively solve the above-mentioned technical problems. Therefore, a photovoltaic power generation bracket for building construction is proposed to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a photovoltaic power generation support for building construction to solve the problems mentioned in the background art.

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

[0006] As an optional solution of the photovoltaic power generation support for building construction described in this utility model, the photovoltaic power generation support for building construction includes a platform, a support column and a photovoltaic panel;

[0007] The top of the platform is fixedly connected to evenly distributed pillars, and the other end of each pillar is fixedly connected to a photovoltaic panel. One end of each photovoltaic panel is fixedly connected to a rain sensor.

[0008] A guide pipe is also fixedly connected to the outer side of the support pillar located at the front;

[0009] A water purification module for rainwater treatment is installed above the platform, and a water pump is connected to one side of the water purification module via a water pipe. The outside of the water pump is fixedly connected to the support frame of the photovoltaic panel. The other end of the water pipe at the output end of the water pump is connected to a spraying mechanism, and the outside of the spraying mechanism is fixedly connected to the side of the photovoltaic panel.

[0010] The water purification module includes a water purification tank, a water inlet pipe, and a water inlet hopper. The water inlet pipe is rotatably connected to one side of the water purification tank, and the other end of the water inlet pipe is connected to the water inlet hopper.

[0011] The water purification tank is fixedly connected to a fixed plate, and an air pump is installed on the top of the fixed plate. The output end of the air pump is connected to a connecting pipe, and the other end of the connecting pipe is connected to an air pipe. A movable frame is fixedly connected to the outside of the air pipe.

[0012] A hollow cylinder is fixedly connected to the bottom of the fixed plate, a hydraulic rod is fixedly connected inside the hollow cylinder, a movable frame is fixedly connected to the free end of the hydraulic rod, a sealing cylinder is fixedly connected to the bottom of the movable frame, a sealing cover is fixedly connected to the bottom of the sealing cylinder, and a sealing ring is fixedly connected to the bottom of the sealing cover.

[0013] The bottom of the water tank is connected to a drain pipe, and a solenoid valve is installed on the outside of the drain pipe.

[0014] The inner wall of the water tank is also equipped with a water level sensor.

[0015] As an optional solution for the photovoltaic power generation bracket for building construction described in this utility model, the sealing ring is arranged in a ring shape and is made of rubber block.

[0016] During the use of photovoltaic panels, they are generally installed on the side of a mountain. Due to their higher altitude compared to flat land, dust easily accumulates on the surface of the photovoltaic panels, affecting their normal use. Manual cleaning is not only inefficient but also lacks quality assurance. Natural rainwater is an effective cleaning medium. The applicant's concept is to use rainwater to automatically clean the surface of photovoltaic panels, effectively solving the above-mentioned technical problems. When the device is in use, it is connected to a power source. The photovoltaic panels are generally installed at an angle, and the drainage pipes can collect water and then collect it into the water purification module. When it is necessary to clean the surface of the photovoltaic panels, the water pump is started to drive the water in the purification module to be pumped out and discharged through the spray mechanism, achieving the purpose of automatically cleaning the surface of the photovoltaic panels. After the rainwater collection is completed, a large amount of water accumulates in the purification tank. After standing for a period of time, silt and other impurities will still settle at the bottom of the purification tank. Because the bottom of the purification tank is concave, the silt can be concentrated and accumulated, ensuring that the silt has less impact on the water pump when it is used.

[0017] As an optional solution for the photovoltaic power generation bracket for building construction described in this utility model, the water tank is further equipped with a first motor, and the end of the main shaft of the first motor is fixedly connected to a drive gear. The outer side of the drive gear meshes with a driven gear, and the inner side of the driven gear is fixedly connected to the water inlet pipe.

[0018] When collecting rainwater, the initial rainwater washes over the photovoltaic panel surface, carrying a large amount of impurities. At this time, the first motor drives the drive gear to rotate, which in turn drives the driven gear to rotate. This changes the angle of the water inlet pipe and the water collection hopper, preventing the water containing a large amount of dust and impurities from entering the clean water tank. After a period of rinsing, the water inlet pipe and the water collection hopper reset, thus achieving rainwater collection. This collection method greatly reduces the impurity content in the rainwater, ensuring the quality of subsequent rinsing of the photovoltaic panel surface.

[0019] As an optional solution for the photovoltaic power generation support for building construction described in this utility model, a second motor is fixedly connected inside the movable frame, a stirring shaft is fixedly connected to the end of the main shaft of the second motor, and a stirring rod is fixedly connected to the other end of the stirring shaft.

[0020] After a period of use, a large amount of silt accumulates on the bottom surface of the water tank. By starting the second motor to drive the stirring shaft to rotate, the water can be agitated. After standing for a period of time, the silt can be effectively located at the lowest point of the water tank. By starting the hydraulic rod, the moving frame is moved down, and the sealing ring covers the bottom of the water tank, forming a sealed space. By starting the air pump, the inside of the sealed cylinder can be pressurized with air. By opening the solenoid valve, the water and silt at the bottom of the sealed cover can be quickly discharged using negative pressure, achieving the purpose of automatically cleaning the silt and ensuring the normal use of the equipment.

[0021] As an optional solution for the photovoltaic power generation bracket for building construction described in this utility model, the spraying mechanism includes a side frame, a diversion pipe is fixedly connected inside the side frame, and the bottom of the diversion pipe is connected to the output end of the water pump. Multiple sets of hoses are connected above the diversion pipe, and the other end of each hose is connected to a water spray pipe.

[0022] As an optional solution for the building construction photovoltaic power generation bracket of this utility model, wherein: the outer side of each water spray pipe is fixedly connected to a rotating shaft, the other end of the rotating shaft is rotatably connected to the side frame, and the other end of each water spray pipe is installed with a fixing frame, and the fixing frame is rotatably connected to a connecting rod inside;

[0023] An electric telescopic rod is fixedly connected inside the side frame, and a connecting rod is fixedly connected to the other end of the electric telescopic rod. A guide cylinder is slidably connected to the other end of the connecting rod, and the other end of the guide cylinder is fixedly connected to the side frame.

[0024] When cleaning the surface of the photovoltaic panel, the connecting rod is moved by activating the electric telescopic rod. The connecting rod drives the fixing frame and water spray pipe to rotate, which changes the spray direction of the water spray pipe, thereby effectively cleaning a large area of ​​the photovoltaic panel surface and ensuring cleaning quality.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] In use, the photovoltaic panels of this utility model are generally set at an angle. The guide pipes set therein can collect water in a concentrated manner and then gather it into the water purification module. When it is necessary to clean the surface of the photovoltaic panel, the water pump can be started to drive the water inside the water purification module to be drawn out and discharged through the spraying mechanism, so as to achieve the purpose of automatically cleaning the surface of the photovoltaic panel.

[0027] When collecting rainwater, the initial rainwater washes over the surface of the photovoltaic panels and carries a large amount of impurities. At this time, the first motor drives the drive gear to rotate, which in turn drives the driven gear to rotate. This changes the angle of the water inlet pipe and the water collection bucket, preventing the water containing a large amount of dust and impurities from entering the clean water tank. After a period of rinsing, the water inlet pipe and the water collection bucket return to their original positions, thus achieving rainwater collection. This collection method greatly reduces the impurity content in the rainwater, ensuring the quality of subsequent rinsing of the photovoltaic panel surface.

[0028] After rainwater collection is completed, a large amount of water accumulates inside the water tank. After standing for a period of time, impurities such as mud and sand will still be deposited at the bottom of the water tank. Because the bottom of the water tank is cone-shaped, the mud and sand can be concentrated and accumulated, ensuring that the impact of mud and sand on the water pump is reduced when the water pump is used.

[0029] After a period of use, a large amount of mud and sand accumulates on the bottom surface of the water tank. By starting the second motor to drive the stirring shaft to rotate, the water can be stirred. After standing for a period of time, the mud and sand can be effectively located at the lowest point of the water tank. By starting the hydraulic rod to drive the moving frame to move down, the sealing ring covers the bottom of the water tank, forming a sealed space. By starting the air pump, the inside of the sealed cylinder can be pressurized with air. By opening the solenoid valve, the water and mud and sand at the bottom of the sealed cover can be quickly discharged using negative pressure, achieving the purpose of automatically cleaning mud and sand and ensuring that the equipment can be used normally.

[0030] When cleaning the surface of photovoltaic panels, the connecting rod is moved by activating the electric telescopic rod. The connecting rod drives the fixing frame and water spray pipe to rotate, which changes the spray direction of the water spray pipe, thereby effectively cleaning a large area of ​​the photovoltaic panel surface and ensuring cleaning quality. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the water purification module of this utility model;

[0033] Figure 3 This is a cross-sectional view of the hollow cylinder of this utility model;

[0034] Figure 4 This is a schematic diagram of the spraying mechanism of this utility model.

[0035] In the diagram: 1. Platform; 2. Support column; 3. Photovoltaic panel; 4. Rain sensor; 5. Drainage pipe; 6. Water purification module; 601. Water tank; 602. Water inlet pipe; 603. Water inlet hopper; 604. Driven gear; 605. Driven gear; 606. First motor; 607. Water level sensor; 608. Drainage pipe; 609. Solenoid valve; 610. Fixing plate; 611. Air pump; 612. Hollow cylinder; 613. Hydraulic rod; 614. 615. Moving frame; 616. Second motor; 617. Stirring shaft; 618. Stirring rod; 619. Sealing cylinder; 620. Sealing cover; 621. Sealing ring; 622. Air pipe; 623. Connecting pipe; 7. Spraying mechanism; 701. Side frame; 702. Rotating shaft; 703. Water spray pipe; 704. Fixing frame; 705. Connecting rod; 706. Electric telescopic rod; 707. Hose; 708. Diverter pipe; 709. Guide cylinder; 8. Water pump. Detailed Implementation

[0036] 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.

[0037] Example 1: Please refer to Figure 1 , Figure 2 and Figure 3 This utility model provides a technical solution:

[0038] A photovoltaic power generation support structure for building construction includes a platform 1, a support column 2, and photovoltaic panels 3;

[0039] The top of the platform 1 is fixedly connected to evenly distributed support columns 2, and the other end of the support column 2 is fixedly connected to a photovoltaic panel 3. One end of the photovoltaic panel 3 is fixedly connected to a rain sensor 4.

[0040] A guide pipe 5 is also fixedly connected to the outer side of the aforementioned support column 2 located on the front side;

[0041] A water purification module 6 for rainwater treatment is installed above the platform 1. A water pump 8 is connected to one side of the water purification module 6 via a water pipe. The outer side of the water pump 8 is fixedly connected to the support frame of the photovoltaic panel 3. The other end of the water pipe at the output end of the water pump 8 is connected to a spraying mechanism 7. The outer side of the spraying mechanism 7 is fixedly connected to the side of the photovoltaic panel 3.

[0042] The water purification module 6 includes a water purification tank 601, a water inlet pipe 602, and a water inlet 603. The water inlet pipe 602 is rotatably connected to one side of the water purification tank 601, and the other end of the water inlet pipe 602 is connected to the water inlet 603.

[0043] The water tank 601 is fixedly connected to a fixed plate 610, and an air pump 611 is installed on the top of the fixed plate 610. The output end of the air pump 611 is connected to a connecting pipe 622, and the other end of the connecting pipe 622 is connected to an air pipe 621. A movable frame 614 is fixedly connected to the outside of the air pipe 621.

[0044] A hollow cylinder 612 is fixedly connected to the bottom of the aforementioned fixed plate 610. A hydraulic rod 613 is fixedly connected inside the hollow cylinder 612. A movable frame 614 is fixedly connected to the free end of the hydraulic rod 613. A sealing cylinder 618 is fixedly connected to the bottom of the movable frame 614. A sealing cover 619 is fixedly connected to the bottom of the sealing cylinder 618. A sealing ring 620 is fixedly connected to the bottom of the sealing cover 619.

[0045] The bottom of the aforementioned water tank 601 is connected to a drain pipe 608, and a solenoid valve 609 is installed on the outside of the drain pipe 608.

[0046] The inner wall of the aforementioned water tank 601 is also equipped with a water level sensor 607.

[0047] The sealing ring 620 is arranged in a ring shape and is made of rubber block.

[0048] A second motor 615 is fixedly connected inside the aforementioned movable frame 614. A stirring shaft 616 is fixedly connected to the end of the main shaft of the second motor 615, and a stirring rod 617 is fixedly connected to the other end of the stirring shaft 616.

[0049] During the use of photovoltaic panels, they are generally installed on the side of a mountain. Due to their higher altitude compared to flat land, dust easily accumulates on the surface of the photovoltaic panels, affecting their normal use. Manual cleaning is not only inefficient but also lacks quality assurance. Natural rainwater is an effective cleaning medium. This applicant's concept utilizes rainwater to automatically clean the surface of photovoltaic panels, effectively solving the aforementioned technical problems. When the device is in use and powered on, the photovoltaic panels 3 are typically installed at an angle, and the included guide pipes 5 can achieve… Water is collected and then channeled into the water purification module 6. When the surface of the photovoltaic panel 3 needs to be cleaned, the water pump 8 is activated to pump the water out of the water purification module 6 and discharge it through the spraying mechanism 7, thereby achieving the purpose of automatically cleaning the surface of the photovoltaic panel 3. After the rainwater collection is completed, a large amount of water accumulates inside the water purification tank 601. After standing for a period of time, sediment and other impurities will still be deposited at the bottom of the water purification tank 601. Since the bottom of the water purification tank 601 is cone-shaped, the sediment can be concentrated and accumulated, ensuring that the impact of sediment on the water pump 8 is reduced when the water pump 8 is used.

[0050] In this embodiment, after a period of use, a large amount of mud and sand accumulates on the bottom surface of the water purification tank 601. By starting the second motor 615 to drive the stirring shaft 616 to rotate, the water can be stirred. After standing for a period of time, most of the mud and sand can be effectively collected at the lowest point of the water purification tank 601. By starting the hydraulic rod 613 to drive the moving frame 614 to move down, and the sealing ring 620 covers the bottom of the water purification tank 601 to form a sealed space. By starting the air pump 611, the inside of the sealing cylinder 618 can be pressurized with air. The solenoid valve 609 is opened, and the water and mud and sand at the bottom of the sealing cover 619 can be quickly discharged using negative pressure, achieving the purpose of automatically cleaning mud and sand and ensuring that the equipment can be used normally. The device has a built-in controller (not shown in the figure).

[0051] When cleaning mud and sand, the hydraulic rod 613 is activated to move the moving frame 614 downward. The moving frame 614 moves the sealing cylinder 618 and the sealing cover 619 downward. The sealing ring 620 at the bottom of the sealing cover 619 contacts the bottom of the inner wall of the water tank 601 to achieve the purpose of sealing and ensure that the mud and sand are squeezed out.

[0052] The water level sensor 607 is located on the inner wall of the water tank 601. It can be used to control the water storage volume. Once the predetermined value is exceeded, the water inlet pipe 602 and the water inlet 603 will rotate to effectively prevent water from continuing to flow into the water tank 601 and prevent water from overflowing.

[0053] Example 2: This example is an improvement upon Example 1. Please refer to [link / reference]. Figure 2Specifically, the water tank 601 is equipped with a first motor 606, and the main shaft of the first motor 606 is fixedly connected to a drive gear 605. The drive gear 605 is meshed with a driven gear 604 on its outer side, and the driven gear 604 is fixedly connected to the water pipe 602 on its inner side.

[0054] When collecting rainwater, the initial rainwater washes the surface of the photovoltaic panel 3 and carries a large amount of impurities. At this time, the first motor 606 drives the active gear 605 to rotate, and the active gear 605 drives the driven gear 604 to rotate. This changes the angle of the water pipe 602 and the water hopper 603, preventing the water containing a large amount of dust and impurities from entering the clean water tank 601. After a period of rinsing, the water pipe 602 and the water hopper 603 reset, and rainwater collection can be achieved. This collection method greatly reduces the impurity content in the rainwater and ensures the quality of subsequent rinsing of the photovoltaic panel 3 surface.

[0055] In this embodiment, the rain sensor 4 detects whether it is a rainy day. When it is a rainy day, the rotation of the water collection hopper 603 effectively prevents rainwater with mud and sand impurities from entering the clean water tank 601. After 30 minutes, the water collection hopper 603 resets, and normal rainwater collection can be achieved.

[0056] Example 3: This example is an improvement on Example 2. Please refer to [link / reference]. Figure 4 Specifically, the spraying mechanism 7 includes a side frame 701, and a diversion pipe 708 is fixedly connected inside the side frame 701. The bottom of the diversion pipe 708 is connected to the output end of the water pump 8. Multiple sets of hoses 707 are connected above the diversion pipe 708, and the other end of each hose 707 is connected to a water spray pipe 703.

[0057] The outer side of each of the above-mentioned water spray pipes 703 is fixedly connected to a rotating shaft 702. The other end of the rotating shaft 702 is rotatably connected to the side frame 701. The other end of each of the above-mentioned water spray pipes 703 is equipped with a fixing bracket 704, and a connecting rod 705 is rotatably connected inside the fixing bracket 704.

[0058] An electric telescopic rod 706 is fixedly connected inside the aforementioned side frame 701, and a connecting rod 705 is fixedly connected to the other end of the electric telescopic rod 706. A guide cylinder 709 is slidably connected to the other end of the connecting rod 705, and the other end of the guide cylinder 709 is fixedly connected to the side frame 701.

[0059] When cleaning the surface of the photovoltaic panel 3, the connecting rod 705 is moved back and forth by starting the electric telescopic rod 706. The connecting rod 705 drives the fixing frame 704 and the water spray pipe 703 to rotate. At this time, the spraying direction of the water spray pipe 703 can be changed under the action of the rotating shaft 702, thereby effectively cleaning a large area of ​​the surface of the photovoltaic panel 3 and ensuring the cleaning quality. The setting of the hose 707 can ensure that the water spray pipe 703 can rotate normally.

[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0061] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic power generation support structure for building construction, characterized in that: Includes platform (1), support pillar (2) and photovoltaic panel (3); The top of the platform (1) is fixedly connected to a uniformly distributed support column (2), and the other end of the support column (2) is fixedly connected to a photovoltaic panel (3). One end of the photovoltaic panel (3) is fixedly connected to a rain sensor (4). A guide pipe (5) is also fixedly connected to the outside of the support column (2) located on the front side; A water purification module (6) for rainwater treatment is installed above the platform (1), and a water pump (8) is connected to one side of the water purification module (6) through a water pipe. The outer side of the water pump (8) is fixedly connected to the support frame of the photovoltaic panel (3). The other end of the water pipe at the output end of the water pump (8) is connected to a spraying mechanism (7), and the outer side of the spraying mechanism (7) is fixedly connected to the side of the photovoltaic panel (3). The water purification module (6) includes a water purification tank (601), a water inlet pipe (602) and a water inlet hopper (603). The water purification tank (601) is rotatably connected to one side of the water inlet pipe (602), and the other end of the water inlet pipe (602) is connected to the water inlet hopper (603). The water tank (601) is fixedly connected to a fixed plate (610), and an air pump (611) is installed on the top of the fixed plate (610). The output end of the air pump (611) is connected to a connecting pipe (622), and the other end of the connecting pipe (622) is connected to an air pipe (621). A movable frame (614) is fixedly connected to the outside of the air pipe (621). A hollow cylinder (612) is fixedly connected to the bottom of the fixed plate (610). A hydraulic rod (613) is fixedly connected inside the hollow cylinder (612). A movable frame (614) is fixedly connected to the free end of the hydraulic rod (613). A sealing cylinder (618) is fixedly connected to the bottom of the movable frame (614). A sealing cover (619) is fixedly connected to the bottom of the sealing cylinder (618). A sealing ring (620) is fixedly connected to the bottom of the sealing cover (619). The bottom of the water tank (601) is connected to a drain pipe (608), and a solenoid valve (609) is installed on the outside of the drain pipe (608). The inner wall of the water tank (601) is also equipped with a water level sensor (607).

2. The photovoltaic power generation support structure for building construction according to claim 1, characterized in that: The sealing ring (620) is arranged in a ring shape and is made of rubber block.

3. A building construction photovoltaic power generation support according to claim 1, characterized in that: The water tank (601) is also equipped with a first motor (606), and the end of the main shaft of the first motor (606) is fixedly connected to a drive gear (605). The outer side of the drive gear (605) is meshed with a driven gear (604), and the inner side of the driven gear (604) is fixedly connected to the water pipe (602).

4. A building construction photovoltaic power generation support according to claim 1, characterized in that: The movable frame (614) is fixedly connected to a second motor (615), and the end of the main shaft of the second motor (615) is fixedly connected to a stirring shaft (616), and the other end of the stirring shaft (616) is fixedly connected to a stirring rod (617).

5. A building construction photovoltaic power generation support according to claim 1, characterized in that: The spraying mechanism (7) includes a side frame (701), and a diversion pipe (708) is fixedly connected inside the side frame (701). The bottom of the diversion pipe (708) is connected to the output end of the water pump (8). Multiple sets of hoses (707) are connected above the diversion pipe (708), and the other end of each hose (707) is connected to a water spray pipe (703).

6. A building construction photovoltaic power generation support according to claim 5, characterized in that: The outer side of each water spray pipe (703) is fixedly connected to a rotating shaft (702), the other end of the rotating shaft (702) is rotatably connected to the side frame (701), and the other end of each water spray pipe (703) is equipped with a fixing bracket (704), and a connecting rod (705) is rotatably connected inside the fixing bracket (704). An electric telescopic rod (706) is fixedly connected inside the side frame (701), and a connecting rod (705) is fixedly connected to the other end of the electric telescopic rod (706). A guide cylinder (709) is slidably connected to the other end of the connecting rod (705), and the other end of the guide cylinder (709) is fixedly connected to the side frame (701).

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