Fruit tree transplanting root protection device

Abstract

The utility model discloses a fruit tree transplanting root protection device which comprises a humidifying assembly, the outer wall of the humidifying assembly is fixedly connected with a grab rail, the bottom of the humidifying assembly is provided with a fixing seat, the bottom of the fixing seat is movably connected with a damping spring, the lower end of the damping spring is provided with a roller connecting shaft, and the lower end of the roller connecting shaft is provided with a rolling pulley. A threaded rod is connected to the interior of the fixing base in a penetrating mode, one side of the threaded rod is in threaded connection with a nut, an inserting groove is formed in the outer wall of the humidifying assembly, a mains supply interface is movably installed on the inner wall of the inserting groove, and a connecting plate is arranged in the humidifying assembly. The humidifier is driven by the battery to humidify the roots of the fruit trees, the humidity of the fruit trees in the transplanting process is effectively guaranteed, the survival rate of the fruit trees is increased, and losses are avoided.

Description

Technical Field

[0001] The utility model relates to the field of transplanting devices, in particular to a fruit tree transplanting root protection device. Background Art

[0002] In the traditional fruit tree transplanting process, the root system is easily squeezed, stretched or broken, resulting in slow growth and prone to withering of the fruit trees after transplanting, which affects the survival rate and growth quality of the fruit trees.

[0003] In the prior art, thicker straw ropes are mostly used for winding and bundling, so that a bowl-shaped soil block is formed at the roots of the transplanted trees. This method is not only difficult to bundle and is a disposable consumable, but also the bundling strength is not high. During transportation, the soil wrapped around the roots is easy to fall off, affecting the transplanting effect. Therefore, a root protection device for transplanting garden fruit trees is proposed.

[0004] In view of this, research and improvements are conducted on the existing problems, and a fruit tree transplanting root protection device is provided. The device has a reasonable structural design. The device is equipped with a humidifier assembly, which can effectively protect the root system of the fruit tree. The fruit tree is fixed by installing a fixing device to ensure the stability of the fruit tree during the transplanting process. The purpose is to solve the problem and improve the practical value through this technology. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a root protection device for transplanting fruit trees.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fruit tree transplanting root protection device, comprising a humidifying component, the outer wall of the humidifying component is fixedly connected with a handrail rod, the bottom of the humidifying component is provided with a fixing seat, the bottom of the fixing seat is movably connected with a shock-absorbing spring, the lower end of the shock-absorbing spring is provided with a roller connecting shaft, the lower end of the roller connecting shaft is provided with a rolling pulley, the interior of the fixing seat is penetrated and connected with a threaded rod, one side of the threaded rod is threadedly connected with a nut, the outer wall of the humidifying component is provided with a slot, the inner wall of the slot is movably installed with a mains interface, the interior of the humidifying component is provided with a connecting plate, one side of the connecting plate is provided with a battery, the other side of the connecting plate is provided with a humidifier, slide grooves are provided on both sides of the upper end of the humidifying component, a protective body is installed on the top of the humidifying component, a ventilation filter is provided inside the protective body, a sleeve is provided inside the protective body, and the A protective sponge is arranged inside the sleeve, and a supporting plate is arranged on the top of the protective body, a hinge is installed on one side of the supporting plate, a fastening ring is connected to one side of the hinge, an arc plate is arranged on the inner side of the fastening ring, a telescopic spring I is fixedly connected to one side of the arc plate and the fastening ring, a fixing rod is fixedly connected to one side of the arc plate, a groove is arranged inside the fastening ring, a telescopic spring II is fixedly connected to the inner wall of the groove, a movable plate is fixedly connected to the end of the telescopic spring II away from the inner wall of the groove, a block is fixedly connected to the side of the movable plate away from the telescopic spring II, a card slot matching the card block is arranged on the front and back sides of the fixing rod, a pull plate is fixedly connected to one side of the fixing rod, a protective outer shell is arranged on the top of the protective body, a protective inner shell is arranged inside the protective outer shell, an adjusting rod is installed on the outer wall of the protective inner shell, and a rectangular empty slot is embedded in one side of the protective outer shell.

[0007] As a further description of the above technical solution:

[0008] The lower end of the humidifying assembly is fixedly connected to the upper end of the fixing seat, the lower end of the fixing seat is movably connected to the shock-absorbing spring, the lower end of the shock-absorbing spring is movably connected to the upper end of the roller connecting shaft, the fixing seat and the roller connecting shaft are movably connected through a threaded rod, and the number of the roller connecting shaft and the rolling pulley are both four groups.

[0009] As a further description of the above technical solution:

[0010] The mains interface is electrically connected to a battery, the battery is electrically connected to a humidifier, and the humidifier is in the shape of a cylinder.

[0011] As a further description of the above technical solution:

[0012] The protective body is movably connected to the ventilation filter, the sleeve is detachably connected to the protective sponge, the top of the ventilation filter is movably connected to the bottom of the sleeve, the ventilation filter is movably connected to the protective sponge, and the outer diameter of the sleeve is larger than the outer diameter of the protective sponge.

[0013] As a further description of the above technical solution:

[0014] The protection body is fixedly connected to the support plates, and the support plates are in two groups, and the two groups of support plates are horizontally and longitudinally symmetrical with respect to the protection body.

[0015] As a further description of the above technical solution:

[0016] The support plate is movably connected to the hinge, the hinge is movably connected to the fastening ring, and the fastening sheet is threadedly connected to the fastening bolt.

[0017] As a further description of the above technical solution:

[0018] The top of the humidifying component is movably connected with a protective body, the slide groove is slidably connected with the slide rod, the sizes of the slide groove and the slide rod are adapted, and the number of the slide groove and the slide rod is two groups.

[0019] As a further description of the above technical solution:

[0020] A handle is fixedly connected to one side of the movable plate, and one end of the handle away from the movable plate passes through the fastening ring and extends to the outside of the fastening ring. A fastening sheet is provided at the opening of the fastening ring, and a fastening bolt is threadedly connected to one side of the fastening sheet.

[0021] As a further description of the above technical solution:

[0022] The top of the protective body is movably connected to a protective outer shell, the protective outer shell is movably connected to a protective inner shell, the adjusting rod passes through the movably connected protective outer shell, the adjusting rod is fixedly connected to the protective inner shell, the adjusting rod is movably connected to the rectangular slot, the protective outer shell and the protective inner shell are rectangular in shape, and the diameter of the adjusting rod is smaller than the width of the rectangular slot.

[0023] The utility model has the following beneficial effects:

[0024] In the utility model, the humidification component and the fixing seat and other components are used to effectively protect the root system of the fruit tree. The humidification component can provide a suitable humidity environment, which is conducive to the growth of trees, while the fixing seat can effectively alleviate the vibration and impact during the transplanting process and protect the tree roots from damage through the setting of the shock-absorbing spring and the roller connecting shaft. A humidifier and a protective sponge are arranged inside the device, which can provide appropriate humidity and protection for the fruit trees, and help reduce the risk of root damage and withering. The humidification component has a built-in AC interface and battery to ensure a continuous humidification function, which can operate normally even without an external power supply. A ventilation filter and a sleeve are arranged inside the protective body to effectively prevent the fruit trees from being invaded by pests and pathogens and maintain a good growth environment. The device design takes into account the user's operating experience, and is provided with humanized designs such as a handle and an adjustment rod, and can be adjusted according to the size of the fruit tree trunk, which is convenient for users to operate and adjust the device. At the same time, the design of fastening bolts and threaded connections makes the device easy to install and disassemble, and convenient for maintenance and storage. An adjustment rod is arranged inside the protective shell, and the height and humidity of the device can be adjusted as needed to adapt to fruit trees of different types and growth stages. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of a fruit tree transplanting root protection device proposed by the utility model;

[0026] Figure 2 This is a cross-sectional view of the structure of a mobile device for a fruit tree transplanting and root protection device proposed by the utility model;

[0027] Figure 3 The utility model provides a fruit tree transplanting root protection device Figure 2 A partial enlarged view of the middle part;

[0028] Figure 4 This is a structural diagram of a humidifying component of a fruit tree transplanting root protection device proposed by the utility model;

[0029] Figure 5 This is a bottom structural diagram of a protective body of a fruit tree transplanting root protection device proposed by the utility model;

[0030] Figure 6 This is a schematic diagram of the top view of the structure of a fruit tree transplanting root protection device proposed by the utility model;

[0031] Figure 7 This is a cross-sectional view of the fixed structure of a fruit tree transplanting root protection device proposed by the utility model;

[0032] Figure 8 The utility model provides a fruit tree transplanting root protection device Figure 7 A partial enlarged view of point B in the middle;

[0033] Fig. 9 The present invention is a structural diagram of a protective shell of a fruit tree transplanting root protection device proposed by the present invention.

[0034] Legend:

[0035] 1. Humidification assembly; 101. Handrail; 102. Fixed seat; 103. Roller connecting shaft; 104. Rolling pulley; 105. Threaded rod; 106. Shock-absorbing spring; 107. Nut; 108. Slot; 109. AC power interface; 110. Connecting plate; 111. Battery; 112. Humidifier; 113. Slide; 2. Protective body; 201. Ventilation filter; 202. Sleeve; 203. Protective sponge; 204. Support plate ; 205, hinge; 206, fastening ring; 207, arc plate; 208, telescopic spring I; 209, fixing rod; 210, fastening plate; 211, fastening bolt; 212, groove; 213, telescopic spring II; 214, movable plate; 215, block; 216, slot; 217, handle; 218, pull plate; 219, slide rod; 3, protective outer shell; 301, protective inner shell; 302, adjusting rod; 303, rectangular empty slot. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] Reference Figure 1-9 A fruit tree transplanting root protection device includes a humidifying component 1, characterized in that: the outer wall of the humidifying component 1 is fixedly connected with a handrail rod 101, a fixing seat 102 is arranged at the bottom of the humidifying component 1, a damping spring 106 is movably connected to the bottom of the fixing seat 102, a roller connecting shaft 103 is arranged at the lower end of the damping spring 106, a rolling pulley 104 is arranged at the lower end of the roller connecting shaft 103, a threaded rod 105 is connected through the inside of the fixing seat 102, a nut 107 is threadedly connected to one side of the threaded rod 105, and the outer wall of the humidifying component 1 is provided with a A slot 108 is provided, and a mains interface 109 is movably installed on the inner wall of the slot 108. A connecting plate 110 is provided inside the humidifying component 1, a battery 111 is provided on one side of the connecting plate 110, and a humidifier 112 is provided on the other side of the connecting plate 110. Slide grooves 113 are provided on both sides of the upper end of the humidifying component 1. A protective body 2 is installed on the top of the humidifying component 1, and a ventilation filter 201 is provided inside the protective body 2. A sleeve 202 is provided inside the protective body 2, and a protective sponge 203 is provided inside the sleeve 202. 2 is provided with a support plate 204 at the top, a hinge 205 is installed on one side of the support plate 204, a fastening ring 206 is connected to one side of the hinge 205, an arc plate 207 is provided on the inner side of the fastening ring 206, a telescopic spring I 208 is fixedly connected to one side of the arc plate 207 and the fastening ring 206, a fixing rod 209 is fixedly connected to one side of the arc plate 207, a groove 212 is provided inside the fastening ring 206, a telescopic spring II 213 is fixedly connected to the inner wall of the groove 212, and the telescopic spring II 213 is away from the groove 21 A movable plate 214 is fixedly connected to one end of the inner wall of the protective body 2, a clamping block 215 is fixedly connected to the side of the movable plate 214 away from the telescopic spring II 213, a clamping slot 216 adapted to the clamping block 215 is provided on the front and back sides of the fixed rod 209, a pull plate 218 is fixedly connected to one side of the fixed rod 209, a protective outer shell 3 is installed on the top of the protective body 2, a protective inner shell 301 is arranged inside the protective outer shell 3, an adjusting rod 302 is installed on the outer wall of the protective inner shell 301, and a rectangular empty slot 303 is embedded in one side of the protective outer shell 3.

[0039] Specifically, the lower end of the humidifying component 1 is fixedly connected to the upper end of the fixing seat 102, the lower end of the fixing seat 102 is movably connected to the shock absorbing spring 106, the lower end of the shock absorbing spring 106 is movably connected to the upper end of the roller connecting shaft 103, the fixing seat 102 and the roller connecting shaft 103 are movably connected through the threaded rod 105, which is used to reduce the vibration and impact during the transplanting process, and the number of roller connecting shafts 103 and rolling pulleys 104 are four groups. This design can provide more uniform support and distribute the weight of the structure, thereby increasing the stability of the structure. By increasing the number of support points, the pressure on a single support point can be reduced, and the deformation and swing of the structure can be reduced.

[0040] Specifically, the AC power interface 109 is electrically connected to the battery 111, and the battery 111 is electrically connected to the humidifier 112. The battery 111 and the humidifier 112 are connected via an electrical connector to provide power for the humidifier 112. The battery 111 can be used to provide power support during movement. The humidifier 112 generates water vapor through the power provided by the battery 111 to keep the roots of the fruit trees moist. The humidifier 112 is in the shape of a cylinder. The cylindrical design of the humidifier 112 can ensure that the water vapor is evenly distributed around the roots, providing a good humid environment for the fruit trees.

[0041] Specifically, the protective body 2 is movably connected to the ventilation filter 201 to ensure that the ventilation filter 201 can effectively cover the sleeve 202 and provide a ventilation environment for the roots. The sleeve 202 is detachably connected to the protective sponge 203. By setting the protective sponge 203, the fruit trees can be prevented from being bumped during transportation and causing root damage. The top of the ventilation filter 201 is movably connected to the bottom of the sleeve 202, and the ventilation filter 201 is movably connected to the protective sponge 203. This ensures that the ventilation filter 201 and the protective sponge 203 are tightly fitted together to provide protection and moisture for the roots of the fruit trees.

[0042] Specifically, the protective body 2 is fixedly connected to the support plate 204, and the number of the support plates 204 is two groups. The two groups of support plates 204 are horizontally and longitudinally symmetrical about the protective body 2, ensuring a firm connection and symmetry between the support plates 204 and the protective body 2, thereby ensuring the stability and functionality of the device.

[0043] Specifically, the support plate 204 is movably connected to the hinge 205, and the hinge 205 is movably connected to the fastening ring 206, so that the hinge 205 can move freely and correspond to the fastening ring 206, and can flexibly adapt to the needs of transplanting operations. The fastening plate 210 is threadedly connected to the fastening bolt 211, and the position of the fastening bolt 211 can be easily adjusted and fixed, which is more convenient and flexible in operation and can meet the transplanting needs under different root system forms.

[0044] Specifically, the top of the humidifying component 1 is movably connected to the protective body 2, the slide groove 113 is slidably connected to the slide rod 219, the sizes of the slide groove 113 and the slide rod 219 are adapted to each other, and the number of the slide groove 113 and the slide rod 219 are both two groups. This arrangement facilitates the installation and disassembly of the humidifying component 1 and the protective body 2, ensures the connection and activity performance of the humidifying component 1 and the protective body 2, and ensures the stability, functionality and ease of operation of the device.

[0045] Specifically, a handle 217 is fixedly connected to one side of the movable plate 214, and the end of the handle 217 away from the movable plate 214 passes through the fastening ring 206 and extends to the outside of the fastening ring 206. A fastening plate 210 is provided at the opening of the fastening ring 206. This structure can effectively fix the positions of the movable plate 214 and the support plate 204 to ensure the stability of the device. A fastening bolt 211 is threadedly connected to one side of the fastening plate 210. The threaded fastening bolt 211 of the fastening ring 206 and the fastening plate 210 can provide a more secure connection effect.

[0046] Specifically, the top of the protective body 2 is movably connected to a protective outer shell 3, the protective outer shell 3 is movably connected to the protective inner shell 301, the adjusting rod 302 passes through the movably connected protective outer shell 3, the adjusting rod 302 is fixedly connected to the protective inner shell 301, the adjusting rod 302 is movably connected to the rectangular slot 303, the protective outer shell 3 and the protective inner shell 301 are rectangular in shape, the diameter of the adjusting rod 302 is smaller than the width of the rectangular slot 303, and this arrangement can adjust the height of the protective inner shell 301 by pushing the adjusting rod 302 up and down according to the height of the fruit tree trunk, thereby improving the safety of the entire fruit tree during the transplanting process.

[0047] Working principle: The battery 111 drives the humidifier 112 to humidify the roots of the fruit trees. At the same time, a protective sponge 203 can be placed inside the sleeve 202 to wrap the roots of the fruit trees, thereby ensuring the protection of the roots of the fruit trees. The sleeve 202 and the protective sponge 203 are detachably connected to facilitate the disassembly and replacement of the protective sponge 203. Remove the fastening bolt 211, open the fastening ring 206, put the fruit tree to be transplanted with the wrapped roots into the protective body 2, and then close the fastening ring 206 respectively, and fasten it with the fastening bolt 211 to ensure the stability of the fruit tree trunk, and fix the fastening ring 206 with the fastening bolt 211 to form a fixing device, and pull the handle 217 on one side of the fastening ring 206 to drive the movable plate 21 4 moves into the groove 212, the movable plate 214 squeezes the telescopic spring II 213, so that the block 215 moves out of the slot 216, and then drives the fixed rod 209 to move through the pull plate 218, and the fixed rod 209 drives the arc plate 207 to move, and the telescopic spring I 208 plays a supporting and stabilizing role when the arc plate 207 moves. After adjusting the distance between the two arc plates 207 according to the size of the fruit tree trunk, release the handle 217, and under the reaction force of the telescopic spring II 213, the block 215 re-enters the corresponding slot 216 on the fixed rod 209 to fix the position of the arc plate 207. At the same time, the adjusting rod 302 can be operated according to the height of the fruit tree to drive the protective inner shell 301 to adjust up and down, so as to achieve the protection of the fruit tree during the transplanting process.

[0048] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A root protection device for fruit tree transplanting, comprising a humidifying component (1), characterized in that: The outer wall of the humidifying component (1) is fixedly connected to a handrail rod (101); a fixing seat (102) is provided at the bottom of the humidifying component (1); a shock absorbing spring (106) is movably connected to the bottom of the fixing seat (102); a roller connecting shaft (103) is provided at the lower end of the shock absorbing spring (106); a rolling pulley (104) is provided at the lower end of the roller connecting shaft (103); a threaded rod (105) is connected through the inside of the fixing seat (102); a nut (107) is threadedly connected to one side of the threaded rod (105); a slot (108) is provided on the outer wall of the humidifying component (1); and an inner wall of the slot (108) is movably mounted with a nut (107). A mains power interface (109) is provided, a connecting plate (110) is provided inside the humidifying component (1), a battery (111) is provided on one side of the connecting plate (110), a humidifier (112) is provided on the other side of the connecting plate (110), slide grooves (113) are provided on both sides of the upper end of the humidifying component (1), a protective body (2) is installed on the top of the humidifying component (1), a ventilation filter (201) is provided inside the protective body (2), a sleeve (202) is provided inside the protective body (2), a protective sponge (203) is provided inside the sleeve (202), and a support plate is provided on the top of the protective body (2). (204), a hinge (205) is installed on one side of the support plate (204), a fastening ring (206) is connected to one side of the hinge (205), an arc plate (207) is arranged on the inner side of the fastening ring (206), a telescopic spring I (208) is fixedly connected to one side of the arc plate (207) and the fastening ring (206), a fixing rod (209) is fixedly connected to one side of the arc plate (207), a groove (212) is provided inside the fastening ring (206), a telescopic spring II (213) is fixedly connected to the inner wall of the groove (212), and the telescopic spring II (213) is away from the inner wall of the groove (212). One end of the protective body (2) is fixedly connected to a movable plate (214), a side of the movable plate (214) away from the telescopic spring II (213) is fixedly connected to a clamping block (215), a front side and a back side of the fixed rod (209) are provided with clamping grooves (216) adapted to the clamping block (215), a side of the fixed rod (209) is fixedly connected to a pull plate (218), a protective outer shell (3) is installed on the top of the protective body (2), a protective inner shell (301) is provided inside the protective outer shell (3), an adjusting rod (302) is installed on the outer wall of the protective inner shell (301), and a rectangular hollow groove (303) is embedded in one side of the protective outer shell (3).

2. A fruit tree transplanting root protection device according to claim 1, characterized in that: The lower end of the humidifying component (1) is fixedly connected to the upper end of the fixing seat (102), the lower end of the fixing seat (102) is movably connected to the shock absorbing spring (106), the lower end of the shock absorbing spring (106) is movably connected to the upper end of the roller connecting shaft (103), the fixing seat (102) and the roller connecting shaft (103) are threadedly connected via a threaded rod (105), and the number of the roller connecting shaft (103) and the rolling pulley (104) is four sets.

3. A fruit tree transplanting root protection device according to claim 2, characterized in that: The mains power interface (109) is electrically connected to a battery (111), and the battery (111) is electrically connected to a humidifier (112), and the humidifier (112) is in the shape of a cylinder.

4. A fruit tree transplanting root protection device according to claim 3, characterized in that: The protective body (2) is movably connected to the ventilation filter (201), the sleeve (202) is detachably connected to the protective sponge (203), the top of the ventilation filter (201) is movably connected to the bottom of the sleeve (202), the ventilation filter (201) is movably connected to the protective sponge (203), and the outer diameter of the sleeve (202) is greater than the outer diameter of the protective sponge (203).

5. The root protection device for transplanting fruit trees according to claim 4, characterized in that: The protective body (2) is fixedly connected to the support plates (204); the support plates (204) are provided in two groups; the two groups of support plates (204) are horizontally and longitudinally symmetrical with respect to the protective body (2).

6. The root protection device for transplanting fruit trees according to claim 5, characterized in that: The support plate (204) is movably connected to the hinge (205), and the hinge (205) is movably connected to the fastening ring (206). A fastening plate (210) is provided at the opening of the fastening ring (206), and a fastening bolt (211) is threadedly connected to one side of the fastening plate (210). The fastening plate (210) is threadedly connected to the fastening bolt (211).

7. The root protection device for transplanting fruit trees according to claim 6, characterized in that: The top of the humidifying component (1) is movably connected to a protective body (2), the slide groove (113) is slidably connected to the slide rod (219), the sizes of the slide groove (113) and the slide rod (219) are adapted to each other, and the number of the slide groove (113) and the number of the slide rod (219) are both two groups.

8. The root protection device for transplanting fruit trees according to claim 7, characterized in that: A handle (217) is fixedly connected to one side of the movable plate (214), and an end of the handle (217) away from the movable plate (214) penetrates the fastening ring (206) and extends to the outside of the fastening ring (206).

9. The root protection device for transplanting fruit trees according to claim 8, characterized in that: The top end of the protective body (2) is movably connected to a protective outer shell (3), the protective outer shell (3) is movably connected to a protective inner shell (301), the adjustment rod (302) passes through the movably connected protective outer shell (3), the adjustment rod (302) is fixedly connected to the protective inner shell (301), the adjustment rod (302) is movably connected to a rectangular slot (303), the protective outer shell (3) and the protective inner shell (301) are rectangular in shape, and the diameter of the adjustment rod (302) is smaller than the width of the rectangular slot (303).

Images