Photovoltaic dc cable pay-off device

Abstract

The application discloses a kind of photovoltaic direct current cable pay-off device, it is related to cable pay-off technical field, including, embrace unit, including fixed block, the clamping block being set to the inner side of fixed block, the pressure rod being set to the inside of clamping block, the rolling piece being set to the one side of pressure rod, the elastic clamping sleeve being set to the central position of the bottom of fixed block, and the device being set to the clamping cable of the central position of fixed block.The beneficial effects of the present application can solve the cable winding condition when paying off, and the cable on the cable reel can be automatically wound and taken out by pulling by roof construction personnel, without the assistance of a dedicated person, saving labor and reducing safety risks, saving time and effort;At the same time, the safety risk generated by hoisting the cable reel to the roof is avoided.

Description

Technical Field

[0001] This invention relates to the field of cable laying technology, and in particular to a photovoltaic DC cable laying device. Background Technology

[0002] Distributed photovoltaic (PV) power generation specifically refers to PV power generation facilities built near user sites, with the user's "self-consumption and surplus power fed into the grid" grid connection method, and characterized by balancing and regulating the power distribution system. Distributed PV is mostly built on the rooftops of urban buildings. Conventional PV DC cable laying often involves hoisting the entire roll of cable to the roof. Due to the weight of the cable, there are safety hazards. If it is laid on the ground, special personnel are needed to assist in winding the cable, which is time-consuming and labor-intensive. Summary of the Invention

[0003] In view of the problems existing in the above or prior art, the present invention is proposed.

[0004] Therefore, the purpose of this invention is to provide a photovoltaic DC cable laying device to solve the problem of cable entanglement causing inconvenience during laying.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a photovoltaic DC cable laying device, which includes a clamping unit, including a fixing block, a clamping block disposed inside the fixing block, a pressure rod disposed inside the clamping block, a rolling element disposed on one side of the pressure rod, an elastic clamping sleeve disposed at the center of the bottom of the fixing block, and a device for clamping the cable disposed at the center of the fixing block.

[0006] The support unit includes a take-up roller, a fixed frame disposed on the upper surface of the take-up roller, a rotating bracket disposed inside the fixed frame, a guide sleeve disposed at one end of the rotating bracket, a mounting sleeve disposed on the side wall of the rotating bracket, and a roller disposed inside the mounting sleeve.

[0007] The fixing block is sleeved on the top of the fixing frame; the fixing block is positioned above the mounting sleeve.

[0008] As a preferred embodiment of the photovoltaic DC cable laying device of the present invention, the fixing block includes a through hole opened at its central position and grooves provided on both sides of the through hole;

[0009] The number of clamping blocks is two sets, and the two sets of clamping blocks are respectively located inside the groove; one end of the clamping block rotates along its axis.

[0010] As a preferred embodiment of the photovoltaic DC cable laying device of the present invention, the clamping block includes a notch opened at its end, a first spring disposed on the end face of the clamping block, and a pressing plate disposed on one side of the clamping block.

[0011] One end of the first spring contacts the surface of the clamping block, and the other end contacts the inner wall of the groove; the pressing plate passes through the fixing block and extends to its outer side.

[0012] In a preferred embodiment of the photovoltaic DC cable laying device of the present invention, the pressure rod includes a first slider disposed on its side wall, a second slider disposed on one side of the first slider, and a second spring disposed at the bottom of the pressure rod;

[0013] The rolling element includes a first groove formed at one end thereon and a ball disposed at the other end of the rolling element; the ball rotates inside the rolling element.

[0014] The first slider is adapted to the first groove; the rolling element passes through the clamping block and extends to its outer side.

[0015] In a preferred embodiment of the photovoltaic DC cable laying device of the present invention, the rolling element is slidably connected to the clamping block; the rolling element is squeezed by the pressure rod, causing the rolling element to move along its trajectory through the interior of the clamping block;

[0016] The end of the pressure rod penetrates the clamping block and extends to its outer side; the end of the pressure rod contacts the inner wall of the groove;

[0017] One end of the second spring is connected to the inner wall of the groove, and the other end is connected to the bottom of the pressure rod.

[0018] In a preferred embodiment of the photovoltaic DC cable laying device of the present invention, the cable clamping device includes a clamping rod; the clamping rod includes a second sliding groove opened at one end thereon, and an arc-shaped groove disposed at the other end of the clamping rod.

[0019] The second slider is adapted to the second groove; the clamping rod passes through the clamping block and extends to the outside of the notch;

[0020] The clamping rod moves in the opposite direction to the rolling element.

[0021] In a preferred embodiment of the photovoltaic DC cable laying device of the present invention, the cable clamping device includes a pressure plate; the pressure plate includes a guide post disposed on its surface and a third spring sleeved on the outside of the guide post;

[0022] The third spring is located between the pressure plate and the bottom of the fixing block;

[0023] The guide post passes through the fixing block and extends into its interior.

[0024] As a preferred embodiment of the photovoltaic DC cable laying device of the present invention, the elastic clamping sleeve includes a waist hole opened in its side wall and a protrusion disposed on the inner side of the end of the elastic clamping sleeve.

[0025] The elastic clamping sleeve is connected to the bottom of the fixing block.

[0026] In a preferred embodiment of the photovoltaic DC cable laying device of the present invention, the ends of the two sets of clamping blocks are close to each other; the bottom surface of the clamping block is in contact with the surface of the groove.

[0027] The pressure plate is sleeved on the outside of the elastic clamping sleeve; the pressure plate moves in the vertical direction; the end of the pressing plate contacts the surface of the pressure plate;

[0028] The inner wall of the pressure plate contacts the outer wall of the elastic clamping sleeve; the elastic clamping sleeve has a cylindrical structure.

[0029] In a preferred embodiment of the photovoltaic DC cable laying device of the present invention, the winding roller and the fixing frame are detachably connected.

[0030] The rotating bracket is movably connected to the winding roller; the rotating bracket has an L-shaped structure, and the guide sleeve is located at the horizontal end of the rotating bracket.

[0031] The beneficial effects of this invention are as follows: This invention can solve the problem of cable entanglement during cable laying. The cable on the cable reel can be automatically pulled out by the roof construction personnel by pulling it, without the need for special assistance, saving labor and reducing safety risks, saving time and effort; at the same time, it avoids the safety risks caused by the cable reel being hoisted to the roof. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of a photovoltaic DC cable laying device.

[0034] Figure 2 This is a schematic diagram of the clamping unit structure of a photovoltaic DC cable laying device.

[0035] Figure 3 This is a partial cross-sectional view of the fixing block of the photovoltaic DC cable laying device.

[0036] Figure 4This is a schematic diagram of the exploded structure of the clamping unit of a photovoltaic DC cable laying device.

[0037] Figure 5 Photovoltaic DC cable laying device Figure 4 A magnified view of part A.

[0038] Figure 6 This is a schematic diagram of the connection structure between the pressure bar and the clamping bar of the photovoltaic DC cable laying device.

[0039] Figure 7 This is a schematic diagram of the connection structure between the pressure plate and the elastic clamping sleeve of the photovoltaic DC cable laying device. Detailed Implementation

[0040] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0041] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0042] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0043] Example 1

[0044] Reference Figures 1-3 This is the first embodiment of the present invention. This embodiment provides a photovoltaic DC cable laying device, which includes a clamping unit 100, including a fixing block 101, a clamping block 102 disposed inside the fixing block 101, a pressure rod 103 disposed inside the clamping block 102, a rolling element 104 disposed on one side of the pressure rod 103, an elastic clamping sleeve 107 disposed at the center of the bottom of the fixing block 101, and a device for clamping the cable disposed at the center of the fixing block 101.

[0045] Preferably, the fixing block 101 is located in a rectangular structure, and the clamping block 102 is located inside the fixing block 101. One end of the clamping block 102 is provided with a pivot, allowing it to rotate along the interior of the fixing block 101. A cable passes through the interior of the fixing block 101, and the sidewall of the cable can press against the end of the clamping block 102, thereby causing the clamping block 102 to rotate and move at an angle. As the clamping block 102 rotates, the pressure rod 103 is pressed against the inner wall of the groove 101b at its end, thus pushing the pressure rod... The lever 103 moves; as the lever 103 moves, it can compress the rolling element 104 to move; causing the rolling element 104 to move in a direction perpendicular to the movement of the lever 103; the rolling element 104 can use rolling friction instead of sliding friction, making it easier for workers to pull the cable; at the same time, the cable clamping device can clamp and fix the outer wall of the cable during the downward movement of the cable; thus ensuring that the cable is fixed inside the fixing block 101; effectively preventing the cable end from falling from a height and causing the cable to get tangled.

[0046] Furthermore, the support unit 200 includes a take-up roller 201, a fixed frame 202 disposed on the upper surface of the take-up roller 201, a rotating bracket 203 disposed inside the fixed frame 202, a guide sleeve 204 disposed at one end of the rotating bracket 203, a mounting sleeve 205 disposed on the side wall of the rotating bracket 203, and a roller 206 disposed inside the mounting sleeve 205; a fixing block 101 is sleeved on the top of the fixed frame 202; the fixing block 101 is disposed above the mounting sleeve 205; the take-up roller 201 and the fixed frame 202 are detachably connected; the rotating bracket 203 and the take-up roller 201 are movably connected; the rotating bracket 203 has an L-shaped structure, and the guide sleeve 204 is disposed at the horizontal end of the rotating bracket 203.

[0047] Preferably, the take-up roller 201 can be used to wind the cable coil, thereby ensuring that the cable can be neatly wound on the outside of the take-up roller 201; the fixed frame 202 and the take-up roller 201 are connected by bolts, thereby ensuring a fixed connection between the take-up roller 201 and the fixed frame 202; the provided rotating bracket 203 is rotatably connected to the fixed frame 202; the provided rotating bracket 203 can ensure that the operator can pull the cable to rotate the cable, thereby driving the rotating bracket 203 to rotate; the provided guide sleeve 204 and the mounting sleeve 205 cooperate to allow the cable to move along a specific trajectory; thereby effectively preventing the cable from getting tangled together.

[0048] In use, the operator passes the cable sequentially through the guide sleeve 204, and then passes the cable end through the two sets of rollers 206 inside the mounting sleeve 205; then positions the cable between the two sets of rollers 206; ensuring that the cable passes through the elastic clamping sleeve 107 and into the inside of the fixing block 101 during pulling; causing the cable to press against the end of the clamping block 102; as the clamping block 102 can rotate along its axis; as the clamping block 102 rotates, it drives the pressure rod 103 inside, causing the end of the pressure rod 103 to contact the inner wall of the groove; as the clamping block 102 continuously rotates, the pressure rod 103 is pressed and moved by the inner wall of the groove; The movement of rod 103 drives the movement of rolling element 104; the end of rolling element 104 extends through to the end of clamping block 102, allowing the end of rolling element 104 to contact the outer wall of the cable, thus making it easier for workers to pull the cable; when workers are working at height, they can pull the cable from a height, and the cable wrapped around the outside of take-up roller 201 can move along the track between guide sleeve 204 and mounting sleeve 205 as the workers pull; when the cable moves downward, the cable clamping device can clamp the outer wall of the cable, thereby fixing the position of the cable and effectively preventing the cable end from falling off and causing the cable to become entangled.

[0049] In summary, this invention can solve the problem of cable tangling during cable laying. The cable on the cable reel can be automatically pulled out by the roof construction workers by pulling it, without the need for special assistance, saving labor and reducing safety risks, saving time and effort; at the same time, it avoids the safety risks caused by the cable reel being hoisted to the roof.

[0050] Example 2

[0051] Reference Figures 1-5 This is the second embodiment of the present invention, which differs from the first embodiment in that it further includes: In the previous embodiment, the photovoltaic DC cable laying device includes a fixing block 101 including a through hole 101a opened at its central position and grooves 101b disposed on both sides of the through hole 101a; the number of clamping blocks 102 is two sets, and the two sets of clamping blocks 102 are respectively disposed inside the grooves 101b; one end of the clamping block 102 rotates along its axis.

[0052] Preferably, the through hole 101a is provided through the interior of the fixing block 101, the groove 101b is symmetrically arranged on both sides of the through hole 101a, and the clamping block 102 has a trapezoidal structure; the clamping block 102 is located inside the groove 101b; the clamping block 102 rotates along the axial hole direction inside the through hole 101a.

[0053] Furthermore, the clamping block 102 includes a notch 102a at its end, a first spring 102b disposed on the end face of the clamping block 102, and a pressing plate 102c disposed on one side of the clamping block 102; one end of the first spring 102b contacts the surface of the clamping block 102, and the other end contacts the inner wall of the groove 101b; the pressing plate 102c passes through the fixing block 101 and extends to its outer side.

[0054] Preferably, the notch 102a has an arc-shaped structure and a trapezoidal cross-section; the upper diameter of the notch 102a is smaller and the lower diameter is larger; the notch 102a can push the clamping block 102 to flip under the action of the rebound force; the notch 102a can make the ends of the clamping blocks 102 move closer to each other under the action of the rebound force; when the cable is inserted between the two sets of clamping blocks 102, the first spring 102b is in a compressed state.

[0055] Furthermore, the pressure rod 103 includes a first slider 103a disposed on its side wall, a second slider 103b disposed on one side of the first slider 103a, and a second spring 103c disposed at the bottom of the pressure rod 103; the rolling element 104 includes a first groove 104a opened at one end thereon, and a ball 104b disposed at the other end of the rolling element 104; the ball 104b rotates inside the rolling element 104; the first slider 103a is adapted to the first groove 104a; the rolling element 104 passes through the clamping block 102 and extends to its outer side.

[0056] Preferably, the first slider 103a and the second slider 103b are symmetrically arranged and opposite to each other; the pressure rod 103 is squeezed by the inner wall of the groove 101b; it can drive the pressure rod 103 to move downward, so that the second spring 103c is in a compressed state; the first slider 103a moves the rolling element 104 on the squeezing side to move in a direction perpendicular to the pressure rod 103; as the pressure rod 103 moves, it can drive the end of the rolling element 104 to pass through to the outside of the clamping block 102; so that the ball 104b can contact the side wall of the cable; it can better facilitate the pulling of the cable.

[0057] Furthermore, the rolling element 104 is slidably connected to the clamping block 102; the rolling element 104 is pressed by the pressure rod 103, causing the rolling element 104 to move along its trajectory through the interior of the clamping block 102; the end of the pressure rod 103 passes through the clamping block 102 and extends to its outer side; the end of the pressure rod 103 contacts the inner wall of the groove 101b; one end of the second spring 103c is connected to the inner wall of the groove 101b, and the other end is connected to the bottom of the pressure rod 103.

[0058] Preferably, the rolling element 104 and the clamping block 102 are slidably connected; the pressure rod 103 can move along the vertical direction to push the rolling element 104 to move along directions perpendicular to each other; as the clamping block 102 flips, the clamping block 102 drives the pressure rod 103 to rotate; thereby allowing the end of the pressure rod 103 to contact the inner wall of the guide groove 101b; after the end of the pressure rod 103 is pressed, the second spring 103c is in a compressed state; thus allowing the pressure rod 103 to move.

[0059] Furthermore, the cable clamping device includes a clamping rod 105; the clamping rod 105 includes a second groove 105a at one end and an arcuate groove 105b at the other end; the second slider 103b is adapted to the second groove 105a; the clamping rod 105 passes through the clamping block 102 and extends to the outside of the notch 102a; the clamping rod 105 moves in the opposite direction to the rolling element 104.

[0060] Preferably, the clamping rod 105 passes through the clamping block 102 and extends to its outer side; the pressure rod 103 moving vertically can drive the clamping rod 105 to move horizontally; the first slider 103a cooperates with the first slide groove 104a, and the second slider 103b cooperates with the second slide groove 105a. As the pressure rod 103 moves vertically, it can drive the rolling element 104 and the clamping rod 105 to move in opposite directions; the clamping rod 105 moves closer to the top of the clamping block 102; when the cable end moves downward, the ball 104b no longer contacts the cable sidewall; then, under the rebound force of the second spring 103c, it can push the clamping rod 105 to move; so that the end of the clamping rod 105 passes through to the outer side of the end of the clamping block 102, thereby allowing the arc groove 105b to contact the cable sidewall; thus, the cable can be fixed; thereby effectively preventing the cable end from falling off; and avoiding the cable from getting tangled together.

[0061] In use, the operator inserts the cable through the elastic clamping sleeve 107 and extends it to the inside of the through hole 101a; the sidewall of the cable presses against the clamping blocks 102 on both sides, causing the clamping blocks 102 to rotate along their axis of rotation; as the clamping blocks 102 rotate, the notch 102a is compressed; then, as the clamping blocks 102 rotate, the end of the pressure rod 103 can contact the inner wall of the groove 101b; as the clamping blocks 102 continue to rotate, the pressure rod 103, under pressure, can push the rolling element 104 to move; at this time, the second spring 103c is compressed; the movement of the pressure rod 103 can push the rolling element 104 to move; the rolling element 104 moves in a direction perpendicular to the movement trajectory of the pressure rod 103; as the cable end is continuously compressed, the end of the rolling element 104 can move to the notch 102a. a. On the outside; then the ball bearing 104b contacts the side wall of the cable; at this time, the worker can pull the cable to move; when the cable moves downward under the action of weight; the cable can drive the clamping block 102 to flip in the direction of approach through friction; then under the rebound force of the second spring 103c, it can push the pressure rod 103 to move; so that the pressure rod 103 drives the rolling element 104 to move; thus, the end of the rolling element 104 is inserted into the inside of the clamping block 102; at the same time, the clamping rod 105 moves with the pressure rod 103, so that the end of the clamping rod 105 can penetrate to the outside of the clamping block 102; thus, the end of the arc groove 105b can contact the side wall of the cable; thus, the cable can be clamped and fixed; effectively preventing the cable from falling to the ground under the action of gravity, thus causing the cable to fall.

[0062] In summary, the clamping rod 105 effectively prevents the cable from slipping under gravity; the frictional force of the cable moving downwards can drive the clamping rod 105 to clamp and fix the side wall of the cable; and it can effectively prevent the cable from getting tangled together.

[0063] Example 3

[0064] Reference Figures 1 to 7 This is the third embodiment of the present invention, which differs from the previous two embodiments in that: the device for clamping the cable includes a pressure plate 106; the pressure plate 106 includes a guide post 106a disposed on its surface, and a third spring 106b sleeved on the outside of the guide post 106a; the third spring 106b is disposed between the pressure plate 106 and the bottom of the fixing block 101; the guide post 106a passes through the fixing block 101 and extends into its interior.

[0065] Preferably, the pressure plate 106 is located at the bottom of the fixing block 101, and the guide post 106a is welded and fixed to the pressure plate 106; and the third spring 106b can push the pressure plate 106 to reset under the action of the rebound force; the elastic clamping sleeve 107 is sleeved on the inner side of the pressure plate 106; the guide post 106a penetrates into the interior of the fixing block 101, thereby ensuring that the guide post 106a is limited.

[0066] Furthermore, the elastic clamping sleeve 107 includes a waist hole 107a opened on its side wall and a protrusion 107b disposed on the inner side of the end of the elastic clamping sleeve 107; the elastic clamping sleeve 107 is connected to the bottom of the fixing block 101.

[0067] Preferably, the elastic clamping sleeve 107 is made of a metal elastic material; the waist hole 107a ensures that the elastic clamping sleeve 107 has a frustum-shaped structure with a smaller bottom diameter and a smaller top diameter in normal conditions; the protrusion 107b is located on the inner wall of the elastic clamping sleeve 107, and the protrusion 107b forms a ring-shaped structure in the contracted state.

[0068] Furthermore, the ends of the two sets of clamping blocks 102 approach each other; the bottom surface of the clamping block 102 contacts the surface of the groove 101b; the pressure plate 106 is sleeved on the outside of the elastic clamping sleeve 107; the pressure plate 106 moves in the vertical direction; the end of the pressure plate 102c contacts the surface of the pressure plate 106; the inner wall of the pressure plate 106 contacts the outer wall of the elastic clamping sleeve 107; the elastic clamping sleeve 107 has a cylindrical structure.

[0069] Preferably, the bottom surface of the clamping block 102 contacts the inner wall of the groove 101b; under the rebound force of the notch 102a, one end of the clamping block 102 can be rotated; as the clamping block 102 rotates, the pressing plate 102c can be flipped; so that the pressing plate 102c penetrates to the outside of the fixing block 101; thus, the end of the pressing plate 102c contacts the surface of the pressure plate 106; the pressing plate 102c can squeeze the pressure plate 106 to move the pressure plate 106 in the vertical direction; the inner wall of the circular hole in the middle of the pressure plate 106 squeezes the outside of the elastic clamping sleeve 107; the elastic clamping sleeve 107 gathers towards the middle after being pressed; thus, the bottom of the elastic clamping sleeve 107 becomes a ring-shaped structure, so that the side wall of the cable can be contacted through the protrusion 107b; thus, the end of the cable can be fixed inside the elastic clamping sleeve 107; effectively preventing the cable end from falling off and causing the cable to tangle together.

[0070] In use, the operator pushes the pressure plate 106 with both hands to move it, so that the circular hole inside the pressure plate 106 is positioned above the elastic clamping sleeve 107. This allows the operator to easily insert the cable into the fixing block 101. Then, following the steps in Embodiment 2 above, the cable is installed inside the two sets of clamping blocks 102. When the cable falls, it falls below the clamping block 102. Then, under the rebound force of the first spring 102b and the second spring 103c, the pressure plate 102c is rotated, causing the pressure plate 102c to penetrate into the fixing block 101. The outer side; then the end of the pressing plate 102c contacts the end face of the pressure plate 106; thus, the pressing plate 102c can squeeze the pressure plate 106 downward; then the inner wall of the circular hole opened inside the pressure plate 106 can contact the outer side of the elastic clamping sleeve 107; the inner wall of the circular hole of the pressure plate 106 can squeeze the outer wall of the elastic clamping sleeve 107; causing the elastic clamping sleeve 107 to gather inward; the outer wall of the cable can be clamped and fixed by the provided protrusion 107b; thus, the cable end can be effectively prevented from falling off; and the problem of the cable being tangled and difficult to manage can be avoided.

[0071] In summary, through the cooperation between the elastic clamping sleeve 107 and the pressure plate 106, when the cable end loosens to below the clamping block 102, the pressure plate 106 can be pushed downward under the rebound force of the first spring 102b; thus, the pressure plate 106 can be used to gather the end of the elastic clamping sleeve 107 inward; thereby completing the clamping and fixing of the cable end; effectively preventing the cable from getting tangled, thus making it easier for workers to quickly find the cable end; and making it easier for workers to organize the cable.

[0072] Importantly, the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A photovoltaic DC cable laying device, characterized in that: include, The clamping unit (100) includes a fixing block (101), a clamping block (102) disposed inside the fixing block (101), a pressure rod (103) disposed inside the clamping block (102), a rolling element (104) disposed on one side of the pressure rod (103), an elastic clamping sleeve (107) disposed at the center of the bottom of the fixing block (101), and a device for clamping the cable disposed at the center of the fixing block (101); The support unit (200) includes a take-up roller (201), a fixed frame (202) disposed on the upper surface of the take-up roller (201), a rotating bracket (203) disposed inside the fixed frame (202), a guide sleeve (204) disposed at one end of the rotating bracket (203), a mounting sleeve (205) disposed on the side wall of the rotating bracket (203), and a roller (206) disposed inside the mounting sleeve (205). The fixing block (101) is sleeved on the top of the fixing frame (202); the fixing block (101) is disposed above the mounting sleeve (205); The fixing block (101) includes a through hole (101a) located in its center and grooves (101b) on both sides of the through hole (101a). The number of clamping blocks (102) is two sets, and the two sets of clamping blocks (102) are respectively located inside the groove (101b); one end of the clamping block (102) rotates along its axis; The clamping block (102) includes a notch (102a) at its end, a first spring (102b) disposed on the end face of the clamping block (102), and a pressing plate (102c) disposed on one side of the clamping block (102). One end of the first spring (102b) contacts the surface of the clamping block (102), and the other end contacts the inner wall of the groove (101b); the pressing plate (102c) penetrates the fixing block (101) and extends to its outer side; The pressure rod (103) includes a first slider (103a) disposed on its side wall, a second slider (103b) disposed on one side of the first slider (103a), and a second spring (103c) disposed at the bottom of the pressure rod (103). The rolling element (104) includes a first groove (104a) formed at one end thereon and a ball (104b) disposed at the other end of the rolling element (104); the ball (104b) rotates inside the rolling element (104); The first slider (103a) is adapted to the first groove (104a); the rolling element (104) passes through the clamping block (102) and extends to its outer side; The rolling element (104) is slidably connected to the clamping block (102); the rolling element (104) is squeezed by the pressure rod (103) so that the rolling element (104) moves along its trajectory through the interior of the clamping block (102); The end of the pressure rod (103) penetrates the clamping block (102) and extends to its outer side; the end of the pressure rod (103) contacts the inner wall of the groove (101b); One end of the second spring (103c) is connected to the inner wall of the groove (101b), and the other end is connected to the bottom of the pressure rod (103); The cable clamping device includes a clamping rod (105); the clamping rod (105) includes a second groove (105a) at one end and an arcuate groove (105b) at the other end of the clamping rod (105). The second slider (103b) is adapted to the second groove (105a); the clamping rod (105) passes through the clamping block (102) and extends to the outside of the notch (102a); The clamping rod (105) moves in the opposite direction to the rolling element (104).

2. The photovoltaic DC cable laying device as described in claim 1, characterized in that: The cable clamping device includes a pressure plate (106); the pressure plate (106) includes a guide post (106a) disposed on its surface, and a third spring (106b) sleeved on the outside of the guide post (106a). The third spring (106b) is located between the pressure plate (106) and the bottom of the fixing block (101); The guide post (106a) penetrates the fixing block (101) and extends into its interior.

3. The photovoltaic DC cable laying device as described in claim 2, characterized in that: The elastic clamping sleeve (107) includes a waist hole (107a) opened on its side wall, and a protrusion (107b) disposed on the inner side of the end of the elastic clamping sleeve (107). The elastic clamping sleeve (107) is connected to the bottom of the fixing block (101).

4. The photovoltaic DC cable laying device as described in claim 3, characterized in that: The ends of the two sets of clamping blocks (102) are close to each other; the bottom surface of the clamping block (102) is in contact with the surface of the groove (101b); The pressure plate (106) is sleeved on the outside of the elastic clamping sleeve (107); the pressure plate (106) moves in the vertical direction; the end of the pressing plate (102c) contacts the surface of the pressure plate (106); The inner wall of the pressure plate (106) contacts the outer wall of the elastic clamping sleeve (107); the elastic clamping sleeve (107) has a cylindrical structure.

5. The photovoltaic DC cable laying device as described in any one of claims 1 to 4, characterized in that: The take-up roller (201) is detachably connected to the fixed frame (202); The rotating bracket (203) is movably connected to the winding roller (201); the rotating bracket (203) has an L-shaped structure, and the guide sleeve (204) is located at the horizontal end of the rotating bracket (203).

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