Snowing machine capable of being rapidly installed

Abstract

The utility model relates to the field of snow drifting machine installation, in particular to a quickly-installed snow drifting machine which is provided with a snow drifting machine body. A fixing block is fixedly arranged at the upper end of the snowfall machine body, and a plurality of hanging rods corresponding to the fixing block are further arranged at the upper end of the snowfall machine body; a clamping groove extending in the extending direction of the fixing block is formed in the fixing block, the upper end of the clamping groove communicates with the outside, and one of the left end and the right end of the clamping groove communicates with the outside. One end of each hanging rod is fixedly arranged at the position where the snowing machine body needs to be installed, the snowing machine body is further provided with a clamping block which is fixedly connected with the other end of each hanging rod at the same time and can be in insertion sliding fit with the clamping groove, and the snowing machine body is fixedly connected with the hanging rods through insertion sliding fit of the clamping blocks and the clamping grooves; a limiting assembly used for limiting the clamping block to slide in the clamping groove is further fixedly arranged on the fixing block, and a limiting assembly used for limiting the clamping block in the clamping groove is arranged at the end, communicated with the outside, of the clamping groove. The snow drifting machine body can be conveniently and rapidly installed, and high efficiency and convenience are achieved.

Description

Technical Field

[0001] This utility model relates to the field of snowplow installation, and in particular to a snowplow that can be installed quickly. Background Technology

[0002] A snow machine is a device that can simulate the effect of natural snowfall. It is widely used in various places that need to create a snowy atmosphere. The refrigerant is compressed by a compressor, causing it to evaporate and absorb heat in the evaporator, cooling the surrounding air to below the freezing point. Then, the cooled air is blown out by a fan and mixed with water mist, causing the water mist to condense into snowflake-like ice crystals at low temperatures, thus achieving the snow effect.

[0003] When creating artificial snow indoors, a snowmaking machine is required. However, some existing snowmaking machines are usually installed using a boom, and then the four corners of the snowmaking machine are fixed with bolts. When tightening the bolts, the rest of the snowmaking machine body needs to be supported at the same time. Also, when tightening one bolt, the rest of the parts need to be kept horizontal. This process is cumbersome, time-consuming, and inefficient. Summary of the Invention

[0004] The purpose of this invention is to provide a snowplow that can be installed quickly, facilitating rapid assembly of the snowplow body. It is efficient and convenient.

[0005] The technical solution to achieve the purpose of this utility model is as follows: This utility model has a snowmaking machine body; a fixing block extending along the extension direction of the snowmaking machine body is fixedly provided at the upper end of the snowmaking machine body, and a plurality of hanging rods corresponding to the fixing block are also provided; the fixing block is provided with a slot extending along the extension direction of the fixing block, the upper end of the slot is connected to the outside, and at least one of the left and right ends of the slot is connected to the outside; one end of each hanging rod is fixedly provided at the required installation position of the snowmaking machine body, and a locking block is also provided that is simultaneously fixedly connected to the other end of each hanging rod and can form an insertion and sliding fit with the slot; the snowmaking machine body is fixedly connected to the hanging rod through the insertion and sliding fit of the locking block and the slot; a limiting component for restricting the sliding of the locking block in the slot is also fixedly provided on the fixing block, and a limiting component for restricting the locking block in the slot is provided at the end of the slot that is connected to the outside.

[0006] Furthermore, the limiting component includes a mounting block, a plug rod, and a return spring. The mounting block is fixedly mounted on a fixed block, and the upper end of the locking block extends out of the upper end of the locking groove. The mounting block has a sliding groove extending inward and allowing the plug rod to slide within it. The opening of the sliding groove communicates with the outside and faces the locking block. The interior of the mounting block has a connecting space communicating with the bottom of the sliding groove. The sliding groove and the connecting space are connected through a connecting hole through which the plug rod can pass. The plug rod is slidably mounted in the sliding groove, with one end extending towards the opening of the sliding groove and the other end extending towards the connecting space. One end of the insertion rod extends into the connection space, and a pressure plate is fixedly connected to the end of the insertion rod extending into the connection space. The pressure plate is slidably disposed within the connection space. The return spring is disposed in the connection groove. One end of the return spring acts on the side of the connection space opposite to the connection hole, and the other end of the return spring acts on the pressure plate. The insertion rod slides toward the locking block through the elastic force of the return spring on the pressure plate and the sliding engagement with the sliding groove. The locking block is provided with a slot that can form an insertion engagement with the insertion rod. The locking block is slidably restricted within the slot through the insertion engagement of the insertion rod and the insertion hole.

[0007] Furthermore, the mounting block is provided with a sliding groove that communicates with the connecting space. The sliding groove extends along the sliding direction of the insertion rod. The pressure plate is fixed with an extension rod that extends out of the sliding groove and can form a sliding fit with the sliding groove along the extension direction of the sliding groove. The insertion rod disengages from and engages with the insertion hole through the sliding fit between the extension rod and the sliding groove, the sliding fit between the pressure plate and the connecting space, and the sliding fit between the insertion rod and the sliding groove.

[0008] Furthermore, one end of the insertion rod is provided with a guide slope for guiding the card block to press the insertion rod. The upper end of the guide slope extends toward the top of the insertion rod, and the lower end of the guide slope extends toward the mounting block. The lower end of the guide slope extends out of the plane of the groove wall of the card slot. The pressure surface of the guide slope is set toward the side of the card slot that is connected to the outside and can form contact with the card block.

[0009] Furthermore, the limiting component includes a rotating plate, a rotating rod, and a torsion spring. The slot has clearance grooves on opposite sides inside. The rotating rod is fixedly positioned in the clearance groove on the outward-facing side. One end of the rotating plate has a rotating hole that allows the rotating rod to pass through and rotatably engage with it. The torsion spring is positioned inside the rotating hole, with its axis aligned with the axis of the rotating hole. One end of the rotating plate is rotatably positioned in the clearance groove through the rotating hole and the rotating rod. The torsion spring is sleeved on the rotating rod, with one end fixed to the rod and the other end fixed to the inner wall of the rotating hole. The other end of the rotating plate rotates away from the clearance groove due to the torsion of the torsion spring and the rotational engagement between the rotating hole and the rotating rod. The rotating plate in the clearance grooves on opposite sides of the slot, under the torsion of the torsion spring and the rotational engagement between the rotating hole and the rotating rod, restricts the block within the slot.

[0010] Furthermore, both the card slot and the card block have convex cross-sections, and the outer wall of the card block can fit tightly against the inner wall of the card slot.

[0011] Furthermore, a first positioning wedge and a second positioning wedge are fixedly provided on one end of the card slot that is connected to the outside. The first positioning wedge and the second positioning wedge are respectively located on both sides of the end of the card slot that is connected to the outside. Each of the first positioning wedge and the second positioning wedge has a positioning inclined surface on its opposite side to guide the card block to form a sliding insertion engagement with the card slot. The upper end of the positioning inclined surface extends toward the opposite side of the first positioning wedge and the second positioning wedge, and the lower end of the positioning inclined surface extends toward the inside of the card slot. The card block is positioned by sliding insertion engagement with the card slot through the action of the positioning inclined surface.

[0012] The present invention has the following positive effects: (1) The upper end of the snow sling machine body of the present invention is fixedly provided with a fixing block, and a plurality of hanging rods are also provided corresponding to the fixing block; the fixing block is provided with a slot, the upper end of the slot is connected to the outside, and at least one end of the left and right ends of the slot is connected to the outside; a locking block is also provided that is fixedly connected to each hanging rod and can form a sliding fit with the slot; the snow sling machine body is fixedly connected to the hanging rod through the sliding fit between the locking block and the slot; through the locking and sliding fit between the locking block and the slot, the snow sling machine can be quickly hoisted, which is efficient and convenient; at the same time, since the slot and the locking block are both set horizontally, after the snow sling machine body is installed, the snow sling machine body will be in a horizontal state and no adjustment is required.

[0013] (2) The fixing block of this utility model is also fixedly provided with a limiting component for restricting the sliding of the card block in the card slot. The limiting component includes a mounting block, a plug rod and a return spring. The plug rod slides toward the card block through the elastic force of the return spring on the pressure plate and the sliding cooperation with the sliding groove. The card block is provided with a slot that can form a plug-in cooperation with the plug rod. The card block slides and is restricted in the card slot through the plug-in cooperation between the plug rod and the plug hole. By setting the limiting component, the card block can be prevented from sliding in the card slot, thereby making the installation of the snow machine body stable.

[0014] (3) The end of the card slot of this utility model that is connected to the outside is provided with a limiting component for limiting the card block in the card slot. The limiting component includes a rotating plate, a rotating rod and a torsion spring. The rotating plate in the clearance groove on the opposite sides inside the card slot limits the card block in the card slot under the torsion of the torsion spring and the rotational cooperation of the rotating hole and the rotating rod. Under the action of the torsion spring, the rotating plate can only allow the card block to enter the card slot from the outside, and does not allow the card block to reach the outside from the inside of the card slot. Thus, the limiting component is used as a backup. When the card block is removed from the limitation of the limiting component, it serves as a secondary protection preparation to prevent the card block from directly separating from the card slot.

[0015] (4) The cross-section of the slot and the block of this utility model is convex. The outer wall of the block can fit tightly with the inner wall of the slot. The convex design allows the lower end of the block to protrude laterally and fit with the slot, providing support for the snow machine body and ensuring stability after installation.

[0016] (5) The first positioning inclined block and the second positioning inclined block are fixedly provided on one end of the card slot and the external connection of the present invention. The first positioning inclined block and the second positioning inclined block are respectively provided on the opposite side of the positioning inclined block and the card slot to guide the card block to form a sliding insertion fit. The positioning inclined surface can ensure that the card block accurately corresponds to the card slot before the card block and the card slot form a sliding insertion fit, thereby enhancing the convenience of installation. Attached Figure Description

[0017] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0020] Figure 3 for Figure 1 Enlarged view of part B in the middle;

[0021] Figure 4This is a side sectional view of the limiting component in this utility model.

[0022] In the diagram, the snow machine body is 1, the fixing block is 2, the slot is 21, the clearance slot is 211, the hanging rod is 3, the locking block is 4, the limiting component is 5, the mounting block is 51, the insertion rod is 52, the pressure plate is 521, the return spring is 53, the sliding groove is 54, the connecting space is 55, the connecting groove is 56, the limiting component is 6, the rotating plate is 61, the rotating rod is 62, the torsion spring is 63, the first positioning inclined block is 7, the second positioning inclined block is 8, and the positioning inclined surface is 9. Detailed Implementation

[0023] See Figures 1 to 4 This utility model includes a snowmaking machine body 1; a fixing block 2 extending along the extension direction of the snowmaking machine body 1 is fixedly provided at the upper end of the snowmaking machine body 1, and a plurality of hanging rods 3 corresponding to the fixing block 2 are also provided; the fixing block 2 is provided with a slot 21 extending along the extension direction of the fixing block 2, the upper end of the slot 21 is connected to the outside, and at least one of the left and right ends of the slot 21 is connected to the outside; one end of each hanging rod 3 is fixedly provided at the required installation position of the snowmaking machine body 1, and a locking block 4 is also provided, which is fixedly connected to the other end of each hanging rod 3 and can form an insertion and sliding fit with the slot 21. The snowmaking machine body 1 is fixedly connected to the hanging rod 3 through the insertion and sliding fit between the locking block 4 and the slot 21; a limiting component 5 for limiting the sliding of the locking block 4 in the slot 21 is also fixedly provided on the fixing block 2, and a limiting component 6 for limiting the locking block 4 in the slot 21 is provided at the end of the slot 21 that is connected to the outside.

[0024] Multiple fixing blocks 2 can be provided, and each fixing block 2 is arranged in parallel; the multiple lifting rods 3 corresponding to the fixing blocks 2 are evenly arranged along the extension direction of the fixing blocks 2, so that the snow machine is subjected to balanced force during hoisting.

[0025] The limiting component 5 includes a mounting block 51, a insertion rod 52, and a return spring 53. The mounting block 51 is fixedly mounted on the fixing block 2, and the upper end of the locking block 4 extends out of the upper end of the locking groove 21. The mounting block 51 has a sliding groove 54 extending inward and allowing the insertion rod 52 to slide within it. The opening of the sliding groove 54 communicates with the outside and faces the locking block 4. The interior of the mounting block 51 has a connecting space 55 communicating with the bottom of the sliding groove 54. The sliding groove 54 and the connecting space 55 are connected through a connecting hole through which the insertion rod 52 can pass. The insertion rod 52 is slidably mounted in the sliding groove 54, with one end extending towards the opening of the sliding groove 54 and the other end extending towards the connecting space 55. One end of the insertion rod 52 extends into the connecting space 55, and a pressure plate 521 is fixedly connected to the end of the insertion rod 52 extending into the connecting space 55. The pressure plate 521 is slidably disposed within the connecting space 55. The reset spring 53 is disposed within the connecting groove 56. One end of the reset spring 53 acts on the side of the connecting space 55 opposite to the connecting hole, and the other end of the reset spring 53 acts on the pressure plate 521. The insertion rod 52 slides toward the locking block 4 through the elastic force of the reset spring 53 on the pressure plate 521 and the sliding cooperation with the sliding groove 54. The locking block 4 is provided with a slot that can form an insertion engagement with the insertion rod 52. The locking block 4 is slidably restricted within the locking groove 21 through the insertion engagement of the insertion rod 52 with the insertion hole.

[0026] The mounting block 51 is provided with a sliding groove that communicates with the connecting space 55. The sliding groove extends along the sliding direction of the insertion rod 52. The pressure plate 521 is fixed with an extension rod that extends out of the sliding groove and can form a sliding fit with the sliding groove along the extension direction of the sliding groove. The insertion rod 52 disengages from and engages with the insertion hole through the sliding fit between the extension rod and the sliding groove, the sliding fit between the pressure plate 521 and the connecting space 55, and the sliding fit between the insertion rod 52 and the sliding groove 54.

[0027] The insertion rod 52 extends to one end and is provided with a guide slope for guiding the card block 4 to press the insertion rod 52. The upper end of the guide slope extends toward the top of the end of the insertion rod 52, and the lower end of the guide slope extends toward the mounting block 51. The lower end of the guide slope extends out of the plane of the groove wall of the slot 21. The pressure surface of the guide slope is set toward the side of the slot 21 that is connected to the outside and can form contact with the card block 4.

[0028] The limiting component 6 includes a rotating plate 61, a rotating rod 62, and a torsion spring 63. The interior of the slot 21 has clearance grooves 211 on both opposite sides. The rotating rod 62 is fixedly installed in the clearance groove 211 on the outward-facing side. One end of the rotating plate 61 has a rotating hole that allows the rotating rod 62 to pass through and forms a rotatable engagement with it. The torsion spring 63 is installed inside the rotating hole, with its axis aligned with the axis of the rotating hole. One end of the rotating plate 61 is rotatably mounted in the clearance groove 211 through the rotating hole and the rotating rod 62. Inside 11, the torsion spring 63 is sleeved on the rotating rod 62. One end of the torsion spring 63 is fixedly set on the rotating rod 62, and the other end of the torsion spring 63 is fixedly set on the inner wall of the rotating hole. The other end of the rotating plate 61 rotates away from the clearance groove 211 through the torsion of the torsion spring 63 and the rotational cooperation between the rotating hole and the rotating rod 62. The rotating plate 61 in the clearance groove 211 on the opposite sides of the slot 21 restricts the block 4 in the slot 21 under the torsion of the torsion spring 63 and the rotational cooperation between the rotating hole and the rotating rod 62.

[0029] When there is no external force, the rotating plate 61 in the corresponding clearance groove 211 shields the inside of the slot 21. Under the action of the torsion spring 63, the rotating plate 61 only allows the block 4 to enter the slot 21 from the outside, and does not allow the block 4 to move from the inside of the slot 21 to the outside. If the block 4 located in the slot 21 needs to be moved to the outside, the rotating plate 61 needs to be rotated into the clearance groove 211 by external force, and then the block 4 can be removed from the slot 21.

[0030] A fixed rod extending towards the opening of the clearance groove 211 is fixedly provided on the bottom of the groove. A hook is fixedly provided on one end of the fixed rod facing the opening of the clearance groove 211. The rotating plate 61 is provided with a locking hole that can engage with the hook. The fixed rod has a certain degree of toughness. When the fixed rod is moved to a certain extent, the rotating plate 61 is fixed in the clearance groove 211 by the engagement of the hook and the locking hole and the toughness of the fixed rod itself. After the rotating plate 61 is rotated into the clearance groove 211 by external force, the rotating plate 61 is fixed in the clearance groove 211. When it is necessary to rotate the rotating plate 61 out of the clearance groove 211, the toughness of the fixed rod causes the hook to disengage from the locking hole. At this time, the rotating plate 61 can rotate under the action of the torsion spring 63.

[0031] Both the slot 21 and the block 4 have convex cross-sections, and the outer wall of the block 4 can fit tightly against the inner wall of the slot 21.

[0032] A first positioning wedge 7 and a second positioning wedge 8 are fixedly provided on one end of the slot 21 that is connected to the outside. The first positioning wedge 7 and the second positioning wedge 8 are respectively provided on both sides of the end of the slot 21 that is connected to the outside. On the opposite side of the first positioning wedge 7 and the second positioning wedge 8, there is a positioning wedge 9 for guiding the card block 4 to form a sliding insertion engagement with the slot 21. The upper end of the positioning wedge 9 extends toward the opposite side of the first positioning wedge 7 and the second positioning wedge 8, and the lower end of the positioning wedge 9 extends toward the inside of the slot 21. The card block 4 forms a sliding insertion engagement with the slot 21 through the action of the positioning wedge 9.

[0033] The working principle of this utility model is as follows: The boom 3 is fixedly set at the place where the snow machine body 1 needs to be installed. The locking block 4 enters the locking slot 21 through the end of the locking slot 21 that is connected to the outside. During the process of the locking block 4 entering, the locking block 4 is guided by the positioning inclined surface 9 to accurately enter the locking slot 21 and form an insertion sliding fit with the locking slot 21.

[0034] The locking block 4 is guided by the guide slope to press the rotating plate 61. Under the continuous pressing of the locking block 4, the rotating plate 61 enters the relief groove 211. After the locking block 4 is fully entered into the locking groove 21, the rotating plate 61 rotates away from the relief groove 211 under the action of the torsion spring 63, thereby restricting the locking block 4 in the locking groove 21.

[0035] During the insertion and sliding process of the locking block 4 in the slot 21, the locking block 4 will also press the insertion rod 52 into the sliding groove 54 under the guidance of the guide slope. When the locking block 4 slides, the insertion rod 52 is pressed against the surface of the locking block 4 until the insertion hole on the locking block 4 reaches the position of the insertion rod 52. Then, the insertion rod 52 is pushed into the insertion hole under the action of the return spring 53, thereby forming a sliding restriction in the slot 21.

[0036] The snow machine body 1 is quickly installed by the insertion and sliding of the card block 4 and the card slot 21, the restriction of the limiting component 6 and the restriction of the limiting component 5.

[0037] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A quick-installation snowmaking machine, comprising a snowmaking machine body (1); characterized in that: The upper end of the snowmaking machine body (1) is fixedly provided with a fixing block (2) extending along the extension direction of the snowmaking machine body (1), and a plurality of hanging rods (3) corresponding to the fixing block (2) are also provided; the fixing block (2) is provided with a slot (21) extending along the extension direction of the fixing block (2), the upper end of the slot (21) is connected to the outside, and at least one end of the left and right ends of the slot (21) is connected to the outside; one end of each hanging rod (3) is fixedly provided at the required installation location on the snowmaking machine body (1). It is also provided with a locking block (4) that is fixedly connected to the other end of each rod (3) and can form a sliding engagement with the slot (21). The snow machine body (1) is fixedly connected to the rod (3) through the sliding engagement of the locking block (4) and the slot (21). The fixing block (2) is also fixedly provided with a limiting component (5) for limiting the sliding of the locking block (4) in the slot (21). The end of the slot (21) that communicates with the outside is provided with a limiting component (6) for limiting the locking block (4) in the slot (21).

2. The snow sprayer with rapid installation according to claim 1, characterized in that: The limiting component (5) includes a mounting block (51), a rod (52), and a return spring (53). The mounting block (51) is fixedly mounted on the fixing block (2), and the upper end of the locking block (4) extends out of the upper end of the locking groove (21). The mounting block (51) is provided with a sliding groove (54) extending towards the inside of the mounting block (51) and allowing the rod (52) to slide within it. The opening of the sliding groove (54) is connected to the outside and faces the locking block (4). The interior of the mounting block (51) is provided with a connecting space (55) communicating with the bottom of the sliding groove (54). The sliding groove (54) and the connecting space (55) are connected through a connecting hole through which the rod (52) can pass. The rod (52) is slidably mounted in the sliding groove (54). One end of the rod (52) extends towards the opening of the sliding groove (54), and the other end of the rod (52) extends towards the connecting space (55). One end of the insertion rod (52) extends into the connection space (55) and is fixedly connected to a pressure plate (521). The pressure plate (521) is slidably disposed within the connection space (55). The reset spring (53) is disposed within the connection groove (56). One end of the reset spring (53) acts on the side of the connection space (55) opposite to the connection hole, and the other end of the reset spring (53) acts on the pressure plate (521). The insertion rod (52) slides toward the locking block (4) through the elastic force of the reset spring (53) on the pressure plate (521) and the sliding cooperation with the sliding groove (54). The locking block (4) is provided with a slot that can form a plug-in cooperation with the insertion rod (52). The locking block (4) is slidably restricted within the locking groove (21) through the plug-in cooperation between the insertion rod (52) and the insertion hole.

3. A quick-installation snow machine according to claim 2, characterized in that: The mounting block (51) is provided with a sliding groove that communicates with the connecting space (55). The sliding groove extends along the sliding direction of the insertion rod (52). The pressure plate (521) is fixed with an extension rod that extends out of the sliding groove and can form a sliding fit with the sliding groove along the extension direction of the sliding groove. The insertion rod (52) disengages from the insertion hole and engages with the insertion hole through the sliding fit between the extension rod and the sliding groove, the sliding fit between the pressure plate (521) and the connecting space (55), and the sliding fit between the insertion rod (52) and the sliding groove (54).

4. A quick-installation snow machine according to claim 2, characterized in that: The insertion rod (52) extends to one end and is provided with a guide slope for the guide block (4) to press the insertion rod (52). The upper end of the guide slope extends toward the top of the insertion rod (52) and the lower end of the guide slope extends toward the mounting block (51). The lower end of the guide slope extends out of the groove wall of the slot (21) and is provided on the plane. The pressure surface of the guide slope is provided toward the side of the slot (21) that is connected to the outside and can form contact with the block (4).

5. A quick-installation snow sprayer according to claim 1, characterized in that: The limiting component (6) includes a rotating plate (61), a rotating rod (62), and a torsion spring (63). Both sides of the slot (21) have clearance grooves (211). The rotating rod (62) is fixedly positioned inside the clearance groove (211) on the outward-facing side. One end of the rotating plate (61) has a rotating hole through which the rotating rod (62) can pass and rotate with the rotating rod (62). The torsion spring (63) is positioned inside the rotating hole, with its axis aligned with the axis of the rotating hole. One end of the rotating plate (61) is rotatably positioned in the clearance groove (211) through the rotating hole and rotating with the rotating rod (62). 11) Inside, the torsion spring (63) is sleeved on the rotating rod (62). One end of the torsion spring (63) is fixedly set on the rotating rod (62), and the other end of the torsion spring (63) is fixedly set on the inner wall of the rotating hole. The other end of the rotating plate (61) rotates away from the clearance groove (211) through the torsion of the torsion spring (63) and the rotational cooperation between the rotating hole and the rotating rod (62). The rotating plate (61) in the clearance groove (211) on the opposite sides of the slot (21) restricts the block (4) in the slot (21) under the torsion of the torsion spring (63) and the rotational cooperation between the rotating hole and the rotating rod (62).

6. A quick-installation snow machine according to claim 1, characterized in that: The cross-sections of the slot (21) and the block (4) are both convex, and the outer wall of the block (4) can fit tightly with the inner wall of the slot (21).

7. A snowplow machine for quick installation according to claim 1, characterized in that: The card slot (21) is fixedly provided with a first positioning inclined block (7) and a second positioning inclined block (8) at one end connected to the outside. The first positioning inclined block (7) and the second positioning inclined block (8) are respectively provided on both sides of the end of the card slot (21) connected to the outside. The first positioning inclined block (7) and the second positioning inclined block (8) are each provided with a positioning inclined surface (9) for guiding the card block (4) to form a sliding insertion fit with the card slot (21) on the opposite side. The upper end of the positioning inclined surface (9) extends toward the side opposite to the first positioning inclined block (7) and the second positioning inclined block (8), and the lower end of the positioning inclined surface (9) extends toward the inside of the card slot (21). The card block (4) forms a sliding insertion fit with the card slot (21) through the action of the positioning inclined surface (9).

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