Fabricated net rack suitable for on-site construction and assembling method

Abstract

The invention relates to the technical field of sports equipment, in particular to an assembly type net rack suitable for on-site construction and an assembly method.The assembly type net rack comprises a base, universal wheels, net supporting rods, a positioning unit and a vertical locking unit; the ball net rack can solve the following problems in the prior art: disassembly and assembly of all parts of the net rack are difficult to realize, the portability is influenced, and the net rack cannot adapt to temporary games; the height adjusting distance of the ball net is limited, so that the height of the ball net cannot be adjusted to be in a game of various different balls, and limitation exists; the net supporting rod is controlled to rotate to a horizontal state, so that the net supporting rod and the base can be taken up integrally, taking is convenient, the overall size can be reduced, space can be saved, storage and rapid assembly are convenient, and portability can be improved; the ball net can be adjusted to different heights in a self-adaptive mode by adjusting the length of the net supporting rods, the ball net can adapt to different ball games, and therefore the adaptability of the ball net supporting device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sports equipment, and in particular to an assembled grid frame suitable for on-site construction and an assembly method. Background Art

[0002] In ball sports, the net can increase the technical difficulty of the game, protect the safety of the players, and directly affect the formulation of the rules of the game. Therefore, the use of a dedicated net can ensure the smooth progress of the game. The net needs to be supported by a net frame. This net frame can be permanently installed or temporarily built on the court. In order to ensure that the temporary net frame can be used quickly, it needs to be able to be quickly assembled and disassembled.

[0003] In the prior art, a large number of ball nets are disclosed. For example, a Chinese patent with publication number CN111773647A discloses a new type of ball net, including a net and a net frame. Two net frames are provided, which are respectively arranged on both sides of the net. The net frame includes an upper bracket, a lower bracket and a base. Both the upper bracket and the lower bracket are cylindrical structures. The upper bracket includes a straight rod part and a worm part; an installation groove is opened on the side wall of the lower bracket, and a height adjuster is also installed.

[0004] The above prior art uses a worm gear to adjust the height of the net frame, and then fixes the net by means of a locking ring and a connecting rope. The connecting rope is fixed and adjusted by a rope tightener, and the adjustment is convenient.

[0005] However, the ball game net frame provided by the above prior art still has the following disadvantages: 1. Since temporary grids need to be built in temporary competitions, the grids need to be able to be quickly assembled and disassembled. However, the above-mentioned prior art has a complex structure and is difficult to disassemble and assemble between the various components of the grid. As a result, the grid can only be moved as a whole, which is cumbersome to operate and affects portability, and cannot be adapted to temporary competitions.

[0006] 2. In ball games, some nets are similar, such as badminton nets, tennis nets and volleyball nets. Therefore, the height and length of the nets can be adjusted to be used in different games. However, the height adjustment distance of the upper bracket of the ball net provided by the above-mentioned prior art is limited, and the height of the net cannot be adjusted to the above-mentioned multiple different ball games, which has limitations.

[0007] Therefore, under the viewpoint of the above statement, the ball net frame of the prior art still has room for improvement. Summary of the invention

[0008] In order to solve the above problems, the present invention provides an assembled grid suitable for on-site construction, comprising two bases, universal wheels are arranged at the four corners of the lower end of the base, a grid-supporting rod is installed at the upper end of the base near either side of its length direction, a positioning unit for supporting the base stably is installed on the outer wall of the base, an erection locking unit is arranged between the base and the grid-supporting rod, the erection locking unit includes a fixing frame installed at the corner of the upper end of the base, and the grid-supporting rod is rotatably connected to the fixing frame.

[0009] As a preferred technical solution of the present invention, the positioning unit includes a fixed cylinder mounted on the outer wall of the base, the fixed cylinder is provided with a plurality of through holes, vertically arranged lifting plates are slidably passed through the through holes, a rectangular pressure ring is commonly installed on the upper ends of the plurality of lifting plates on the same fixed cylinder, and an elastic member is arranged between the lower end of the rectangular pressure ring and the top of the fixed cylinder.

[0010] As a preferred technical solution of the present invention, there are two fixed frames and they are symmetrically arranged along the width direction of the base. The upright locking unit also includes a rotating shaft rotatably installed between the two fixed frames. The outer wall of the rotating shaft is provided with a support platform. The net supporting rod is installed on the top of the support platform, and a limiting assembly is installed between the support platform and the base.

[0011] As a preferred technical solution of the present invention, the limit assembly includes a positioning block installed at one end of the net supporting rod away from the supporting platform, and a limit clamp is provided on one side of the upper end of the base away from the fixing frame; The limit clamp is composed of an upper and lower part, and the two parts of the limit clamp are hinged in a detachable manner. A card slot matching with the positioning block is provided in the middle of the limit clamp.

[0012] As a preferred technical solution of the present invention, the limiting assembly also includes an L-shaped plate installed on the side of the base close to the fixed frame, the horizontal section of the L-shaped plate is located below the support platform, the vertical section of the L-shaped plate is located on the side of the support platform away from the base, and a locking groove is provided at the upper end of the L-shaped plate, and a locking block that is clamped in the locking groove is provided on the side of the support platform away from the base.

[0013] As a preferred technical solution of the present invention, a fastening groove is provided on the side of the upper end of the locking block away from the support platform, a side wall of the fastening groove close to the support platform is flush with the side of the vertical section of the L-shaped plate away from the support platform, and a locking bolt that is rotatably provided on the side of the vertical section of the L-shaped plate away from the support platform is movable and engaged in the fastening groove.

[0014] As a preferred technical solution of the present invention, the net support rod is composed of multiple sections of sleeves with gradually decreasing diameters, and a support rod is installed in the middle of the upper end of the support platform, which is slidably inserted into the middle of the sleeve. The support rod coincides with the axis of the multiple sleeves, and the positioning block is installed at the upper end of the support rod; A longitudinal slot is provided on one side of the sleeves away from the limit clamp, the width of the longitudinal slots on the sleeves increases gradually toward the side away from the limit clamp, and two net pulling rods are symmetrically arranged along the longitudinal slot on the side of the sleeve away from the limit clamp.

[0015] As a preferred technical solution of the present invention, an arc frame is provided on one side of the outer sleeve of the net supporting rod close to the middle of the base, and fixed platforms are provided at both ends of the arc frame. A support rod is installed at the lower end of the fixed platform by bolt connection, and the lower end of the support rod is movably connected to the base, and the support rod is gradually inclined from top to bottom toward both sides close to the width direction of the base.

[0016] In addition, the present invention also provides an assembly method suitable for on-site construction of a grid frame, comprising the following steps: S1: Grid movement: First, move the two bases to the designated positions and place them relative to each other; S2: Fixing the grid: The base is fixed by the positioning unit, and then the grid support rods are erected and the grid support rods are limited by the erection locking unit; S3: Setting up the net: Setting up the net on the two base support poles to complete the temporary construction of the net frame. In summary, the present application includes at least one of the following beneficial technical effects: 1. The present invention presses the rectangular pressure ring and a plurality of lifting plates downward as a whole so that the lifting plates are in contact with the ground, so as to support and fix the base in multiple directions, prevent the base from moving at will under the action of the universal wheels, and further ensure the stability of the base, the net support pole and the net.

[0017] 2. The present invention controls the net-supporting rod to rotate to a horizontal state, so that the net-supporting rod can be hand-held and picked up together with the base as a whole, which is convenient to take and can reduce the overall volume, save space, facilitate storage and quick assembly, and improve portability. When the net-supporting rod is rotated to a vertical state, it is used to support the net.

[0018] 3. The present invention drives the support platform and the locking block to rotate synchronously when the net support rod rotates upward, so that the locking block is inserted into the locking groove, and then the locking bolt is connected to the fastening groove, so that the support platform can be limited to ensure that the support platform and the net support rod always remain in a vertical state, thereby ensuring the stability of the net support rod and the net, and preventing the net from falling or loosening due to the impact of the ball during the game.

[0019] Fourth, the present invention can adjust the net to different heights by adjusting the length of the net-supporting pole. When the net is at the lowest position, it is suitable for tennis games. When the height of the net is further adjusted upward, it is suitable for badminton games. When the height of the net is further adjusted upward, it can be used for volleyball games. It can be adapted to different ball games and can be adaptively adjusted according to actual needs, thereby improving the adaptability of the present invention.

[0020] Fifth, the present invention can limit and fix the net-supporting rod through the support rod, which can offset the multi-directional forces on the net-supporting rod to further ensure the stability of the net-supporting rod and the net, and the support rod can be quickly disassembled and installed between the fixed platform and the base, and the assembly is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the structure between two bases placed opposite to each other in the present invention.

[0023] Figure 2 It is a structural schematic diagram of the present invention.

[0024] Figure 3 It is a working state diagram between the base and the net supporting rod of the present invention.

[0025] Figure 4 It is a schematic diagram of the structure between the net supporting rod and the vertical locking unit of the present invention.

[0026] Figure 5 The present invention Figure 4 A partial enlarged view of point A.

[0027] Figure 6 It is a structural schematic diagram of a net supporting rod of the present invention.

[0028] Figure 7 It is a schematic diagram of the structure among the base, the net supporting rods and the supporting rods of the present invention.

[0029] Figure 8 The present invention Figure 7 A partial enlarged view of point B.

[0030] In the figure, 1, base; 2, universal wheel; 3, net supporting rod; 31, sleeve; 311, arc frame; 312, fixed platform; 313, support rod; 32, support rod; 33, net pulling rod; 4, positioning unit; 41, fixed cylinder; 42, lifting plate; 43, rectangular pressure ring; 5, vertical locking unit; 51, fixed frame; 52, rotating shaft; 53, supporting platform; 54, limiting assembly; 541, positioning block; 542, limiting clamp; 543, L-shaped plate; 544, locking block; 545, fastening groove; 546, locking bolt. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-Figure 8 Embodiments of the present invention are described in detail.

[0032] The embodiment of the present application discloses an assembled grid frame suitable for on-site construction. It should be noted that the assembled grid frame suitable for on-site construction of the present application is mainly used for temporary assembly of ball grid frames. In terms of technical effect, it is convenient to pick up the entirety, and can reduce the overall volume, save space, and is convenient for storage. In addition, during assembly, the base 1 can be supported and fixed in multiple directions to ensure the stability of the base 1, the net-supporting rods 3 and the net. In particular, during the assembly process of the grid frame, the net-supporting rods 3 supporting the net can be limited and fixed to ensure the stability of the net-supporting rods 3 and the net. Furthermore, the assembled grid frame suitable for on-site construction of the present application can also adjust the height of the net according to different ball games, so that it can be adaptively adjusted according to actual needs.

[0033] Reference Figure 1 As shown, an assembled net frame suitable for on-site construction includes two bases 1, and universal wheels 2 are provided at the four corners of the lower end of the base 1. The universal wheels 2 are used to facilitate the movement of the present invention to a designated competition venue. A net-supporting rod 3 is installed on the upper end of the base 1 near either side of its length direction, and a positioning unit 4 for supporting and stabilizing the base 1 is installed on the outer wall of the base 1. An erection locking unit 5 is provided between the base 1 and the net-supporting rod 3. The erection locking unit 5 includes a fixing frame 51 installed at the upper corner of the base 1, and the net-supporting rod 3 is rotatably connected to the fixing frame 51.

[0034] It should be noted that a cavity is provided inside the base 1, and the top of the base 1 can be quickly opened and closed to facilitate the placement of sand and stones into the cavity, thereby increasing the weight of the base 1 and ensuring the stability of the base 1, the net support rod 3 and the net.

[0035] During the specific implementation process, the two bases 1 are first moved to the specified positions and placed relative to each other, and then the bases 1 are limited and fixed by the positioning unit 4, and then the net-supporting rods 3 are erected and locked and limited by the erection locking unit 5; then the net is hung on the net-supporting rods 3 on the two bases 1, so that the net is spread out, thereby realizing the rapid assembly of the present invention and enabling temporary construction.

[0036] Continue to refer to Figure 1 As shown, in order to ensure the stability of the grid, corresponding fixed limiting is required after the grid is assembled. Based on this, a positioning unit 4 is provided in this embodiment. Specifically, the positioning unit 4 includes a fixed cylinder 41 fixedly sleeved on the outer wall of the base 1, and a plurality of through holes are opened on the fixed cylinder 41. Vertically arranged lifting plates 42 are slidably penetrated inside the through holes. A rectangular pressure ring 43 is commonly installed on the upper ends of the plurality of lifting plates 42 on the same fixed cylinder 41, and an elastic member is arranged between the lower end of the rectangular pressure ring 43 and the top of the fixed cylinder 41.

[0037] It should be noted that the elastic member always applies a supporting force to the rectangular pressure ring 43, so that the rectangular pressure ring 43 drives the lifting plate 42 to move up to the highest position in the initial state. At this time, there is a certain distance between the lifting plate 42 and the ground, so that the universal wheel 2 is in contact with the ground, so as to facilitate moving the present invention to the specified position; in addition, a locking block is installed between the lifting plate 42 and the through hole.

[0038] During the specific implementation process, after the base 1 moves to the specified position, the rectangular pressure ring 43 is pressed downward, so that the rectangular pressure ring 43 moves the multiple lifting plates 42 downward as a whole, so that the lifting plates 42 contact the ground, so as to facilitate multi-directional support and fixation of the base 1, and prevent the base 1 from moving at will under the action of the universal wheel 2, thereby further ensuring the stability of the base 1, the net support rod 3 and the net. During this period, the locking block can limit and fix the lifting plate 42 when it moves down to the lowest position, so as to limit the position of the lifting plate 42 and ensure the stability of the base 1.

[0039] When the net needs to be removed, the rectangular pressure ring 43 is controlled to drive the plurality of lifting plates 42 to move upward as a whole, so as to release the fixing effect on the base 1 and enable the base 1 to resume the movement of the universal wheels 2 .

[0040] Reference Figure 1 and Figure 2 As shown, in order to facilitate the net support rod 3 to tighten the ball net after it is erected, it is necessary to limit the net support rod 3 accordingly. Based on this, in this embodiment, there are two fixing frames 51 and they are symmetrically arranged along the width direction of the base 1. The erection locking unit 5 also includes a rotating shaft 52 rotatably installed between the two fixing frames 51. The outer wall of the rotating shaft 52 is fixedly sleeved with a support platform 53. The net support rod 3 is installed on the top of the support platform 53, and a limiting component 54 is installed between the support platform 53 and the base 1.

[0041] In the specific implementation process, the support platform 53 and the rotating shaft 52 are provided to enable the net-supporting rod 3 to rotate to a horizontal state or a vertical state, and the limiting assembly 54 can be used to limit and fix the net-supporting rod 3 accordingly; in addition, the horizontal net-supporting rod 3 is horizontally placed above the base 1, and a notch is provided at the upper end of the base 1, so that the net-supporting rod 3 can be picked up together with the base 1 as a whole by hand, which is convenient for taking, and can reduce the overall volume, facilitate storage and quick assembly, and improve portability; the vertical net-supporting rod 3 is used to support the net.

[0042] Reference Figure 2 and Figure 3As shown, in order to ensure that the net supporting rod 3 in a horizontal state can be picked up as a whole together with the base 1, in this embodiment, the limiting assembly 54 includes a positioning block 541 installed at the end of the net supporting rod 3 away from the support platform 53, and a limiting clamp 542 is provided on the side of the upper end of the base 1 away from the fixing frame 51; the limiting clamp 542 is composed of an upper and lower part, and the two parts of the limiting clamp 542 are hinged in a detachable manner, and a slot matching the positioning block 541 is provided in the middle of the limiting clamp 542.

[0043] In the specific implementation process, after the net supporting rod 3 is rotated to the side close to the limiting clamp 542 to a horizontal state, the positioning block 541 at the end of the net supporting rod 3 is inserted into the card slot. The mutual cooperation between the limiting clamp 542 and the positioning block 541 can limit the net supporting rod 3, so that the net supporting rod 3 remains in a horizontal state and cannot be rotated upward at will. At this time, the net supporting rod 3 forms a handle that is convenient for picking it up together with the base 1 as a whole (in Figure 3 ).

[0044] Reference Figure 4 and Figure 5 As shown, in order to ensure the stability of the net, the vertical net support rod 3 needs to be limited and fixed accordingly. Based on this, a limit assembly 54 is also provided in this embodiment. Specifically, the limit assembly 54 also includes an L-shaped plate 543 installed on the side of the base 1 close to the fixed frame 51, the horizontal section of the L-shaped plate 543 is located below the support platform 53, the vertical section of the L-shaped plate 543 is located on the side of the support platform 53 away from the base 1, and a locking groove is provided at the upper end of the L-shaped plate 543, and a locking block 544 that is clamped in the locking groove is provided on the side of the support platform 53 away from the base 1.

[0045] Furthermore, in the present embodiment, a fastening groove 545 is provided on the side of the upper end of the locking block 544 away from the support platform 53, and a side wall of the fastening groove 545 close to the support platform 53 is flush with the side of the vertical section of the L-shaped plate 543 away from the support platform 53, and a locking bolt 546 that is rotatably provided on the side of the vertical section of the L-shaped plate 543 away from the support platform 53 is movably engaged in the fastening groove 545.

[0046] During the specific implementation process, when the net-supporting rod 3 is rotated upward to a vertical state, the net-supporting rod 3 drives the support platform 53 and the locking block 544 to rotate synchronously. At this time, the locking block 544 is inserted into the locking groove, and then the locking bolt 546 is inserted into the fastening groove 545. In this way, the support platform 53 can be limited by the mutual cooperation between the L-shaped plate 543, the locking block 544 and the locking bolt 546 to ensure that the support platform 53 and the net-supporting rod 3 always remain in a vertical state, thereby ensuring the stability of the net-supporting rod 3 and the net, and preventing the net from falling or loosening due to the impact of the ball during the game.

[0047] Reference Figure 6As shown, since the nets need to be at different heights in different ball games, such as tennis, badminton and volleyball, the heights of the nets need to be set from low to high, respectively, so the heights of the nets need to be adjusted accordingly according to different ball games. Based on this, in this embodiment, the net support rod 3 is composed of a plurality of sleeves 31 with gradually decreasing diameters, and a support rod 32 is installed in the middle of the upper end of the support platform 53, which is slidably arranged in the middle of the sleeve 31. The support rod 32 coincides with the axes of the plurality of sleeves 31, and the positioning block 541 is installed at the upper end of the support rod 32; Furthermore, in this embodiment, a longitudinal slide groove is opened on the side of the multiple sleeves 31 away from the limiting clamp 542, the width of the longitudinal slide grooves on the multiple sleeves 31 increases successively toward the side away from the limiting clamp 542, and two net pulling rods 33 are symmetrically arranged along the longitudinal slide groove on the side of the sleeve 31 away from the limiting clamp 542.

[0048] In the specific implementation process, the net is easily installed by pulling the net rod 33. When the multi-section sleeve 31 is contracted to the shortest, the net is in the lowest position, which is convenient for adapting to tennis games; when the sleeve 31 is extended upward in sequence, the height of the net can be adjusted upward, which is convenient for adapting to badminton games; in addition, when the sleeve 31 continues to be extended upward, the height of the net can be further adjusted, which is convenient for adapting to volleyball games. In this way, by adjusting the length of the net supporting rod 3, the net can be adjusted to different heights, and then adapted to different ball games, thereby improving the adaptability of the present invention.

[0049] Reference Figure 7 and Figure 8 As shown, in order to further ensure the stability of the net supporting rod 3 and the net, in this embodiment, an arc frame 311 is provided on one side of the outer sleeve 31 of the net supporting rod 3 close to the middle of the base 1, and a fixing platform 312 is provided at both ends of the arc frame 311. A support rod 313 is installed at the lower end of the fixing platform 312 by bolt connection, and the lower end of the support rod 313 is movably connected to the base 1.

[0050] During the specific implementation process, the support rod 313 can be quickly disassembled and installed between the fixed platform 312 and the base 1, and the assembly is convenient. When installing the support rod 313, a bolt is screwed between the upper end of the support rod 313 and the fixed platform 312 for limit fixing, and then the lower end of the support rod 313 and the base 1 are clamped together, so that the support rod 313 and the fixed platform 312 cooperate to limit and fix the net support rod 3, so as to further ensure the stability of the net support rod 3 and the net.

[0051] It should be noted that the support rods 313 gradually incline from top to bottom toward both sides in the width direction of the base 1 , so as to offset the multi-directional forces exerted on the net support rods 3 , thereby ensuring the stability of the net support rods 3 .

[0052] In addition, the present invention also provides an assembly method suitable for on-site construction of a grid frame, comprising the following steps: S1: Moving the grid: First, the two bases 1 are moved to designated positions respectively and placed relative to each other.

[0053] S2: Fixing the grid: Press the rectangular pressure ring 43 downward so that the rectangular pressure ring 43 moves the multiple lifting plates 42 downward as a whole, so that the lifting plates 42 contact the ground, so as to facilitate multi-directional support and fixation of the base 1, and prevent the base 1 from moving arbitrarily under the action of the universal wheel 2, thereby further ensuring the stability of the base 1, the net supporting rod 3 and the net. During this period, the locking block can limit and fix the lifting plate 42 when it moves down to the lowest position, so as to limit the position of the lifting plate 42 and ensure the stability of the base 1.

[0054] The support platform 53 and the rotating shaft 52 are provided to enable the net-supporting rod 3 to be rotated to a horizontal state or a vertical state, and the limiting assembly 54 can be used to limit and fix the net-supporting rod 3 accordingly; in addition, the net-supporting rod 3 in a horizontal state is placed horizontally above the base 1, and a notch is provided at the upper end of the base 1, so that the net-supporting rod 3 can be conveniently picked up together with the base 1 by hand, which is convenient for taking, and can reduce the overall volume, facilitate storage and quick assembly, and improve portability; at this time, the positioning block 541 at the end of the net-supporting rod 3 is inserted into the card slot, and the net-supporting rod 3 can be limited by the mutual cooperation between the limiting clamp 542 and the positioning block 541, so that the net-supporting rod 3 remains in a horizontal state and cannot be rotated upward at will, and at this time, the net-supporting rod 3 forms a handle for conveniently picking it up together with the base 1 as a whole.

[0055] When the net-supporting rod 3 is rotated upward to a vertical state, it is used to support the net. The net-supporting rod 3 drives the support platform 53 and the locking block 544 to rotate synchronously. At this time, the locking block 544 is inserted into the locking groove, and then the locking bolt 546 is inserted into the fastening groove 545. In this way, the support platform 53 can be limited by the mutual cooperation between the L-shaped plate 543, the locking block 544 and the locking bolt 546 to ensure that the support platform 53 and the net-supporting rod 3 always remain in a vertical state, thereby ensuring the stability of the net-supporting rod 3 and the net.

[0056] The net is easily installed by the net-pulling rod 33 on the outer wall of the sleeve 31. When the multi-section sleeve 31 is retracted to the shortest position, the net is at the lowest position, which is convenient for adapting to tennis games. When the sleeve 31 is successively extended upward, the height of the net can be adjusted upward, which is convenient for adapting to badminton games. In addition, when the sleeve 31 is further extended upward, the height of the net can be further adjusted upward, which is convenient for adapting to volleyball games. In this way, the net can be adjusted to different heights by adjusting the length of the net-supporting rod 3, so as to adapt to different ball games.

[0057] The support rod 313 can be quickly disassembled and installed between the fixed platform 312 and the base 1, and the assembly is convenient. When installing the support rod 313, a bolt is screwed between the upper end of the support rod 313 and the fixed platform 312 for position fixing, and then the lower end of the support rod 313 and the base 1 are clamped together, so that the net support rod 3 is limited and fixed through the cooperation between the support rod 313 and the fixed platform 312, so as to further ensure the stability of the net support rod 3 and the net.

[0058] S3: Setting up the net: Setting up the net between the net-pulling rods 33 of the net-supporting rods 3 on the two bases 1 to complete the temporary construction of the net frame.

[0059] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0060] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An assembled grid frame suitable for on-site construction, comprising two bases (1), four corners of the lower end of the base (1) are provided with universal wheels (2), the upper end of the base (1) is provided with a grid support rod (3) near either side of the length direction thereof, and the upper end of the base (1) is provided with a notch, characterized in that: The outer wall of the base (1) is provided with a positioning unit (4) for supporting and stabilizing the base (1); an erection locking unit (5) is provided between the base (1) and the net-supporting rod (3); the erection locking unit (5) comprises a fixing frame (51) installed at a corner of the upper end of the base (1); the net-supporting rod (3) and the fixing frame (51) are rotatably connected; The positioning unit (4) comprises a fixed cylinder (41) sleeved on the outer wall of the base (1), the fixed cylinder (41) being provided with a plurality of through holes, vertically arranged lifting plates (42) slidingly passing through the through holes, a rectangular pressure ring (43) being commonly mounted on the upper ends of the plurality of lifting plates (42) on the same fixed cylinder (41), an elastic member being arranged between the lower end of the rectangular pressure ring (43) and the top of the fixed cylinder (41); The fixing frames (51) are two and are symmetrically arranged along the width direction of the base (1); the vertical locking unit (5) further comprises a rotating shaft (52) rotatably mounted between the two fixing frames (51); a support platform (53) is sleeved on the outer wall of the rotating shaft (52); the net support rod (3) is mounted on the top of the support platform (53); and a limit position assembly (54) is installed between the support platform (53) and the base (1); The limiting assembly (54) comprises a positioning block (541) mounted on one end of the net supporting rod (3) away from the supporting platform (53), and a limiting clamp (542) is provided on one side of the upper end of the base (1) away from the fixing frame (51); The limiting clip (542) is composed of an upper and lower part, and the two parts of the limiting clip (542) are hinged in a detachable manner. A slot matching the positioning block (541) is provided in the middle of the limiting clip (542).

2. The assembled grid suitable for on-site construction according to claim 1, characterized in that: The limiting assembly (54) further comprises an L-shaped plate (543) mounted on a side of the base (1) close to the fixing frame (51); the horizontal section of the L-shaped plate (543) is located below the support platform (53); the vertical section of the L-shaped plate (543) is located on a side of the support platform (53) away from the base (1); a locking groove is provided at the upper end of the L-shaped plate (543); and a locking block (544) is provided on a side of the support platform (53) away from the base (1) and is engaged in the locking groove.

3. The assembled grid suitable for on-site construction according to claim 2, characterized in that: A fastening groove (545) is provided on the side of the upper end of the locking block (544) away from the support platform (53), and a side wall of the fastening groove (545) close to the support platform (53) is flush with the side of the vertical section of the L-shaped plate (543) away from the support platform (53), and a locking bolt (546) movably engaged in the fastening groove (545) is rotatably provided on the side of the vertical section of the L-shaped plate (543) away from the support platform (53).

4. The assembled grid suitable for on-site construction according to claim 1, characterized in that: The net support rod (3) is composed of a plurality of sleeves (31) with gradually decreasing diameters that are slidably connected, a support rod (32) slidably inserted into the middle of the sleeve (31) is installed at the middle of the upper end of the support platform (53), the support rod (32) coincides with the axes of the plurality of sleeves (31), and a positioning block (541) is installed at the upper end of the support rod (32); A longitudinal slide groove is provided on one side of the plurality of sleeves (31) away from the limiting clamp (542); the width of the longitudinal slide grooves on the plurality of sleeves (31) increases successively toward the side away from the limiting clamp (542); and two net pulling rods (33) are symmetrically arranged along the longitudinal slide groove on the side of the sleeve (31) away from the limiting clamp (542).

5. The assembled grid suitable for on-site construction according to claim 1, characterized in that: An arc frame (311) is provided on one side of the outer sleeve (31) of the net supporting rod (3) close to the middle of the base (1), and fixing platforms (312) are provided at both ends of the arc frame (311). A support rod (313) is installed at the lower end of the fixing platform (312) by bolt connection, and the lower end of the support rod (313) is movably connected to the base (1), and the support rod (313) is gradually inclined from top to bottom towards both sides in the width direction of the base (1).

6. An assembly method for on-site construction of a grid, comprising an assembled grid suitable for on-site construction as claimed in any one of claims 1 to 5, characterized in that: The assembly method includes the following steps: S1: Moving the grid: First, the two bases (1) are moved to designated positions respectively and placed relative to each other; S2: fixing the grid: the base (1) is fixed in position by means of a positioning unit (4), and then the grid support rod (3) is erected and the grid support rod (3) is limited in position by means of an erection locking unit (5); S3: Setting up the net: Setting up the net on the net supporting poles (3) of the two bases (1) to complete the temporary construction of the net frame.

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