Safety protection device for electric power transmission engineering construction site

Abstract

The invention provides an electric power transmission engineering construction site safety protection device which comprises a protection supporting assembly and a top supporting side pushing mechanism, and the protection supporting assembly comprises a supporting vertical frame, a top frame, two folding and unfolding net frames and two first protection nets; the device is integrally installed and fixed to the ground through the ground anchor head, then the driving mechanism is used for providing power for the jacking and side pushing mechanism so that the jacking and side pushing mechanism can drive the folding and unfolding net rack to complete unfolding operation, and after unfolding operation is completed, the jacking and side pushing mechanism drives the expanding mechanism to move in the direction of the folding and unfolding net rack. The device is used for expanding the protection range, then operation is repeated, multiple sets of devices are assembled, so that building operation can be rapidly completed on an electric tower construction site according to actual requirements, safety protection is conducted on ground personnel and equipment, different numbers of devices can be used for building according to the actual requirements, the protection range can be controlled, and the construction efficiency is improved. And the requirements of different power transmission engineering construction sites are met.

Description

Technical Field

[0001] The invention relates to a safety protection device, in particular to a safety protection device for a construction site of a power transmission project, and belongs to the technical field of power transmission project construction. Background Art

[0002] Power transmission engineering usually refers to the engineering that transmits the electric energy generated by power plants to load centers (such as cities, industrial areas, etc.) through transmission lines. This process involves the construction, operation and maintenance of high-voltage transmission lines. Power transmission engineering is an important part of the power system. Its construction and development have an important impact on the national economy, society and people's lives; and tower construction is a key link in power transmission engineering, which involves installing components such as tower foundations, tower bodies and conductors in place to achieve efficient transmission of electricity.

[0003] An electric tower is a trapezoidal or triangular steel-structured tower-mounted building, usually 25-40 meters high. During construction work, there is usually a lack of protection for ground workers and equipment, and there is a risk of safety accidents caused by falling objects from high altitudes.

[0004] The Chinese patent, entitled "A protective device for safe construction of power engineering projects (patent number ZL202123229213.6), discloses a protective technology for safe construction of power engineering projects. Through the coordinated use of two first semicircular pallets, two protective nets and two second semicircular pallets, a circular protective circle can be formed; however, although the device can protect ground personnel and equipment, due to its structural limitations, its protection range is fixed and cannot be expanded according to actual needs, and it cannot be effectively folded and stored.

[0005] The Chinese patent, entitled "A Ground Protection Device for Power Tower Construction" (publication number CN117071928A), discloses a ground protection technology for power tower construction. A protective net is set up under the power tower to form a safe falling area, which can cushion falling personnel and reduce casualties. At the same time, it can block objects falling from above to prevent injuries to personnel below, thereby improving safety protection. However, although the device can effectively store the protective net, its protection range is still relatively fixed and can only be expanded horizontally or vertically. In addition, it has special requirements on the material of the protective net, and can only use a protective net with a soft material that can be rolled up. Therefore, a safety protection device for the construction site of a power transmission project is proposed. Summary of the invention

[0006] In view of this, the present invention provides a safety protection device for a power transmission engineering construction site to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0007] The technical solution of the embodiment of the present invention is implemented as follows: a safety protection device for a power transmission engineering construction site, comprising a protection support assembly and a top support and side thrust mechanism, wherein the protection support assembly comprises a support stand, a top frame, two retractable and deployable net frames and two first protection nets;

[0008] The top frame is fixedly connected to the top of the supporting frame, the two retractable net frames are hinged to one side of the top frame, the two first protective nets are respectively fixedly connected to the inside of the two retractable net frames, the outer side of the supporting frame is installed with a top support side pushing mechanism, the inner side of the two retractable net frames is slidably connected with an expansion mechanism, a driving mechanism is installed between the supporting frame and the top support side pushing mechanism, two limiting mechanisms are symmetrically installed inside the supporting frame, and a plurality of ground anchor heads are fixedly connected to the bottom of the supporting frame;

[0009] The supporting and pushing mechanism is used to utilize the power of the driving mechanism to drive the retractable and deployable grid frame to be retracted and deployed, and to drive the expansion mechanism to be retracted and deployed along the direction of the retractable and deployable grid frame;

[0010] Wherein, the driving mechanism is used to provide power for the movement of the top support and side thrust mechanism;

[0011] Wherein, the expansion mechanism is used to expand the protection range of the device.

[0012] Further preferably, two first receiving grooves are symmetrically provided on the outer side of the supporting stand.

[0013] Further preferably, the two limiting mechanisms each include a threaded through hole, a threaded sleeve, two limiting plates, two protrusions and two third springs;

[0014] Among them, the threaded through hole is opened on the outside of the supporting frame, the outer wall of the threaded sleeve is threadedly connected to the inner wall of the threaded through hole, the two limiting plates are slidably connected to the inner wall of the threaded sleeve, the two protrusions are respectively fixedly connected to the non-adjacent sides of the two limiting plates, one end of the two third springs is respectively fixedly connected to one side of the two limiting plates, and the other ends of the two third springs are fixedly connected to the middle part of the inner wall of the threaded sleeve.

[0015] Further preferably, the expansion mechanism is composed of two first expansion grids, two second protection nets, four first slide bars, four first slide grooves, a splicing bar and a socket slot;

[0016] Among them, the outer sides of the two first extension frames are respectively slidably connected to the inner sides of the two retractable and unfolded frames, the two second protective nets are respectively fixedly connected to the inner side walls of the two first extension frames, the four first sliding bars are respectively fixedly connected to the outer sides of the two first extension frames, the four first sliding grooves are respectively opened on the inner sides of the two retractable and unfolded frames, the outer side walls of the first sliding bars are slidably connected to the inner side walls of the first sliding grooves, a splicing strip is provided on one side of one of the first extension frames, and a socket slot is opened on one side of the other first extension frame, and the splicing strip is adapted to the socket slot.

[0017] Further preferably, the supporting and pushing mechanism is composed of a first slide, four first connecting rods and four first springs;

[0018] Among them, the inner wall of the first slide is slidably connected to the outer wall of the supporting stand, one end of the four first connecting rods is hinged to the inner side of the first slide, and the other ends of the four first connecting rods are respectively hinged to the bottom of the two first extended grids, one end of the four first springs is fixedly connected to the outer side of the top frame, and the other ends of the four first springs are respectively fixedly connected to one side of the two first extended grids.

[0019] Further preferably, the driving mechanism is composed of a first central rod, a threaded column, a lower support plate, a hand wheel, a cross connecting rod, a limit plate and a second spring;

[0020] In which, the lower supporting plate is fixedly connected to the bottom of the inner side wall of the supporting stand, one end of the first center rod is rotatably connected to the inner side wall of the lower supporting plate, the bottom of the threaded column is inserted into the top of the first center rod, the handwheel is fixedly connected to the bottom of the first center rod, one end of the cross connecting rod is rotatably connected to the bottom of the top frame, the other end of the cross connecting rod passes through the inner side wall of the threaded column and is fixedly connected to the top of the limiting plate, the outer side wall of the limiting plate is slidably connected to the inner side wall of the threaded column, the second spring is fixedly connected between one side of the limiting plate and the inner side wall of the threaded column, and the outer side wall of the threaded column is threadedly connected to the inner side wall of the first slide.

[0021] Further preferably, two second receiving grooves are symmetrically provided at the bottom of the two first extension frames, and the outer side wall of the first connecting rod is slidably connected to the inner side wall of the second receiving groove.

[0022] Further preferably, the expansion mechanism is composed of two second expansion grids, six third protection nets, four second slide bars and four second slide grooves;

[0023] Among them, the outer sides of the two second extension frames are respectively slidably connected to the inner sides of the two retractable and unfolded frames, the six third protective nets are respectively fixedly connected to the inner walls of the two second extension frames, the four second sliding bars are respectively fixedly connected to the outer sides of the two second extension frames, the four second sliding grooves are respectively opened on the inner sides of the two retractable and unfolded frames, the outer side walls of the second sliding bars are slidably connected to the inner side walls of the second sliding grooves, and two second storage grooves are symmetrically opened at the bottom of the two second extension frames.

[0024] Further preferably, the supporting and pushing mechanism is composed of a second slide, four second connecting rods, a first manual hydraulic pump and four first hydraulic cylinders;

[0025] Among them, the inner wall of the second slide is slidably connected to the outer wall of the supporting frame, one end of the four second connecting rods are hinged to the inner side of the second slide, and the other ends of the four second connecting rods are respectively hinged to the bottom of the two retractable and unfoldable frames, the first manual hydraulic pump is installed on one side of the supporting frame, the four first hydraulic cylinders are respectively installed on the bottom of the two first protective nets, the piston rods of the four first hydraulic cylinders are respectively fixedly connected to one side of the two second expansion frames, and the outer wall of the second connecting rod is slidably connected to the inner wall of the second storage groove.

[0026] Further preferably, the driving mechanism is composed of a second center rod, a second manual hydraulic pump, a lower support convex plate and two second hydraulic cylinders;

[0027] Among them, the lower support protrusion is fixedly connected to the bottom of the inner wall of the support frame, the second center rod is fixedly connected between the support frame and the top frame, the inner wall of the second slide is slidably connected to the outer wall of the second center rod, the second manual hydraulic pump is installed on one side of the support frame, and the two second hydraulic cylinders are installed between the lower support protrusion and the support frame, and the piston rods of the two second hydraulic cylinders are fixedly connected to the bottom of the second slide.

[0028] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0029] 1. The present invention uses a ground anchor head to install and fix the entire device on the ground, and then uses a driving mechanism to provide power to the top support and side push mechanism, so that the top support and side push mechanism can drive the folding and unfolding grid to complete the unfolding operation. After the unfolding operation is completed, the top support and side push mechanism drives the expansion mechanism to move along the folding and unfolding grid to expand the protection range, and then repeats the operation to assemble multiple groups of devices, so as to quickly complete the construction operation at the tower construction site according to actual needs, and safely protect the ground personnel and equipment. Different numbers of devices can be used for construction according to actual needs, and the protection range can be controlled to meet the needs of different power transmission project construction sites.

[0030] Second, the overall volume of the present invention is small, and the foldable grid frame, the first protective net and the expansion mechanism are stored in a foldable manner, making the entire device easier to carry and transport, and there is no special requirement for the material of the protective net.

[0031] The above summary is for illustrative purposes only and is not limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 This is a schematic diagram of the assembly effect of the first embodiment of the present invention;

[0034] Figure 2 It is an axonometric view of the first embodiment of the present invention;

[0035] Figure 3 is a schematic cross-sectional structural diagram of the first connecting rod of the present invention;

[0036] Figure 4 It is a cross-sectional structural schematic diagram of the first embodiment of the present invention;

[0037] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure of region A;

[0038] Figure 6 For the present invention Figure 4 A schematic diagram of the enlarged structure of region B;

[0039] Figure 7 It is a bottom view structural schematic diagram of the first extended grid of the present invention;

[0040] Figure 8 This is a schematic diagram of the folding effect of the first embodiment of the present invention;

[0041] Fig. 9 It is an axonometric view of the second embodiment of the present invention;

[0042] Fig.10 It is a cross-sectional structural schematic diagram of the second embodiment of the present invention;

[0043] Fig.11 is a schematic cross-sectional structural diagram of the second center rod of the present invention;

[0044] Fig.12 is a schematic cross-sectional structural diagram of the second connecting rod of the present invention;

[0045] Fig.13 It is a bottom view structural diagram of the second embodiment of the present invention.

[0046] Figure numerals: 1, protection support assembly; 2, top support and side pushing mechanism; 3, expansion mechanism; 4, driving mechanism; 5, limit mechanism; 101, support frame; 102, top frame; 103, retractable and unfolded grid frame; 104, first protection net; 201, first slide frame; 202, first connecting rod; 203, first spring; 301, first expansion grid frame; 302, second protection net; 303, first slide bar; 304, first slide groove; 305, splicing bar; 306, socket slot; 401, first center rod; 402, threaded column; 403, lower support plate; 404, hand wheel; 405, cross connecting rod; 406, limit plate; 407, second spring; 501, threaded through hole; 502, threaded sleeve; 503, limit plate; 504, bump; 505, third spring; 61, ground anchor head; 62, first receiving groove; 63, second receiving groove; 211, second slide; 212, second connecting rod; 213, first manual hydraulic pump; 214, first hydraulic cylinder; 311, second extension grid; 312, third protective net; 313, second slide bar; 314, second slide groove; 411, second center rod; 412, second manual hydraulic pump; 413, lower support convex plate; 414, second hydraulic cylinder. DETAILED DESCRIPTION

[0047] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0048] It should be noted that the terms "first", "second", "symmetrical", "array", etc. are only used to distinguish between description and position description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the definition of "first", "symmetrical", etc. can explicitly or implicitly include one or more of these features; similarly, when the number of certain features is not limited in the form of words such as "two" or "three", it should be noted that this feature also explicitly or implicitly includes one or more feature quantities.

[0049] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0050] Embodiment 1

[0051] like Figure 1-Figure 8 As shown, an embodiment of the present invention provides a safety protection device for a power transmission engineering construction site, including a protection support assembly 1 and a top support side thrust mechanism 2, wherein the protection support assembly 1 includes a support stand 101, a top frame 102, two retractable and deployable net frames 103 and two first protection nets 104;

[0052] Among them, the top frame 102 is fixedly connected to the top of the supporting frame 101, the two retractable net frames 103 are hinged to one side of the top frame 102, the two first protective nets 104 are respectively fixedly connected to the inside of the two retractable net frames 103, the outer side of the supporting frame 101 is installed with a top support side pushing mechanism 2, the inner side of the two retractable net frames 103 is slidably connected with an expansion mechanism 3, a driving mechanism 4 is installed between the supporting frame 101 and the top support side pushing mechanism 2, two limiting mechanisms 5 are symmetrically installed inside the supporting frame 101, and a plurality of ground anchor heads 61 are fixedly connected to the bottom of the supporting frame 101;

[0053] The supporting and pushing mechanism 2 is used to utilize the power of the driving mechanism 4 to drive the retractable and deployable grid frame 103 to be retracted and deployed, and to drive the expansion mechanism 3 to be retracted and deployed along the direction of the retractable and deployable grid frame 103;

[0054] The driving mechanism 4 is used to provide power for the movement of the top support and side thrust mechanism 2;

[0055] The expansion mechanism 3 is used to expand the protection range of the device.

[0056] In one embodiment, the two limiting mechanisms 5 each include a threaded through hole 501, a threaded sleeve 502, two limiting pieces 503, two protrusions 504 and two third springs 505;

[0057] Among them, the threaded through hole 501 is opened on the outside of the supporting frame 101, the outer wall of the threaded sleeve 502 is threadedly connected to the inner wall of the threaded through hole 501, the two limiting plates 503 are slidably connected to the inner wall of the threaded sleeve 502, the two protrusions 504 are respectively fixedly connected to the non-adjacent sides of the two limiting plates 503, one end of the two third springs 505 is respectively fixedly connected to one side of the two limiting plates 503, and the other ends of the two third springs 505 are both fixedly connected to the middle part of the inner wall of the threaded sleeve 502.

[0058] The protrusion 504 drives the limiting plate 503 to move under the action of pressure, and the moving limiting plate 503 drives the third spring 505 to be compressed, so that part of the protrusion 504 can slide smoothly into the interior of the threaded sleeve 502.

[0059] In one embodiment, the expansion mechanism 3 is composed of two first expansion racks 301, two second protection nets 302, four first slide bars 303, four first slide slots 304, a splicing bar 305 and a socket slot 306;

[0060] Among them, the outer sides of the two first extended grids 301 are respectively slidably connected to the inner sides of the two retractable grids 103, the two second protective nets 302 are respectively fixedly connected to the inner walls of the two first extended grids 301, the four first slide bars 303 are respectively fixedly connected to the outer sides of the two first extended grids 301, the four first slide grooves 304 are respectively opened on the inner sides of the two retractable grids 103, the outer walls of the first slide bars 303 are slidably connected to the inner walls of the first slide grooves 304, a splicing strip 305 is provided on one side of one first extended grid 301, and a socket slot 306 is opened on one side of the other first extended grid 301, and the splicing strip 305 is adapted to the socket slot 306.

[0061] The second protection net 302 and the first slide bar 303 are driven to move by the first expansion grid 301. The moving second protection net 302 is used to expand the protection range of the retractable grid 103 and the first protection net 104. The moving first slide bar 303 slides in the first slide groove 304 to guide the moving first expansion grid 301 as a whole.

[0062] In one embodiment, the supporting and pushing mechanism 2 is composed of a first slide 201, four first connecting rods 202 and four first springs 203;

[0063] Among them, the inner wall of the first slide 201 is slidably connected to the outer wall of the supporting stand 101, one end of the four first connecting rods 202 are hinged to the inner side of the first slide 201, and the other ends of the four first connecting rods 202 are respectively hinged to the bottom of the two first extended grids 301, one end of the four first springs 203 are fixedly connected to the outer side of the top frame 102, and the other ends of the four first springs 203 are respectively fixedly connected to one side of the two first extended grids 301.

[0064] The first slide 201 utilizes the first connecting rod 202 to drive the stowage and deployment frame 103 to be unfolded. When the force between the first connecting rod 202 and the first expansion frame 301 reaches the bearing limit of the first spring 203, the moving first connecting rod 202 drives the first expansion frame 301 to slide laterally along the direction of the stowage and deployment frame 103 as a whole. The moving first expansion frame 301 drives the first spring 203 to move, and the moving first spring 203 is stretched.

[0065] In one embodiment, the driving mechanism 4 is composed of a first central rod 401, a threaded column 402, a lower support plate 403, a hand wheel 404, a cross connecting rod 405, a limit plate 406 and a second spring 407;

[0066] Among them, the lower supporting plate 403 is fixedly connected to the bottom of the inner wall of the supporting frame 101, one end of the first center rod 401 is rotatably connected to the inner wall of the lower supporting plate 403, the bottom of the threaded column 402 is inserted into the top of the first center rod 401, the handwheel 404 is fixedly connected to the bottom of the first center rod 401, one end of the cross connecting rod 405 is rotatably connected to the bottom of the top frame 102, the other end of the cross connecting rod 405 passes through the inner wall of the threaded column 402 and is fixedly connected to the top of the limiting plate 406, the outer wall of the limiting plate 406 is slidably connected to the inner wall of the threaded column 402, the second spring 407 is fixedly connected between one side of the limiting plate 406 and the inner wall of the threaded column 402, and the outer wall of the threaded column 402 is threadedly connected to the inner wall of the first slide 201.

[0067] The first center rod 401 is driven to rotate by rotating the hand wheel 404, and the rotating first center rod 401 drives the threaded column 402 to rotate. The rotating threaded column 402 drives the first slide 201 as a whole to continue to slide upward along the support frame 101 by means of the thread, so that the moving first slide 201 utilizes the first connecting rod 202 to fully unfold the retractable and deployable grid frame 103.

[0068] In one embodiment, two first receiving grooves 62 are symmetrically provided on the outer side of the support stand 101, two second receiving grooves 63 are symmetrically provided on the bottom of the two first extension racks 301, and the outer side wall of the first connecting rod 202 is slidably connected to the inner side wall of the second receiving groove 63.

[0069] By providing the first receiving groove 62 and the second receiving groove 63 , the first connecting rod 202 is received during the folding process, thereby preventing the first connecting rod 202 from interfering with the folding operation.

[0070] When the present invention is in operation, the device is moved as a whole to a designated position, and then the support stand 101 is moved to drive the anchor head 61 to be inserted into the ground at the construction site to fix the device as a whole.

[0071] When the device is fixed, first, by moving the retractable and unfolding grid frame 103, the first connecting rod 202 drives the first slide 201 to slide upward along the supporting frame 101. When the first slide 201 slides to the protrusion 504, the inner side wall of the first slide 201 is used to squeeze the protrusion 504 to drive the limiting piece 503 to move. The moving limiting piece 503 drives the third spring 505 to be compressed, so that part of the protrusion 504 can slide smoothly into the interior of the threaded sleeve 502, so that the first slide 201 can be smoothly When the first slide 201 passes the protrusion 504 and separates from the protrusion 504, the compressed third spring 505 drives the limit plate 503 and the protrusion 504 to reset, so that the reset protrusion 504 can be used to limit the bottom of the first slide 201. At the same time, the moving first slide 201 drives the threaded column 402 to move, and the moving threaded column 402 drives the second spring 407 to be compressed, so that the compressed second spring 407 can be used to provide a continuous downward thrust for the threaded column 402.

[0072] After the first slide 201 successfully crosses the protrusion 504, the first center rod 401 is driven to rotate by turning the hand wheel 404, and the rotating first center rod 401 drives the threaded column 402 to rotate, and the threaded column 402 and the first slide 201 are threadedly connected, and then the hand wheel 404 is continuously turned to gradually reset the threaded column 402 and the compressed second spring 407. When the threaded column 402 is reset, the threaded column 402 drives the first slide 201 as a whole to continue to slide upward along the support frame 101, so that the moving first slide 201 utilizes the first connecting rod 202 to fully unfold the retractable and unfoldable frame 103.

[0073] When the unfolding operation of the stowage and deployment network frame 103 is completed, the hand wheel 404 is continuously rotated to drive the first slide frame 201 and the first connecting rod 202 to continue to move by means of the thread. When the force between the first connecting rod 202 and the first expansion network frame 301 reaches the bearing limit of the first spring 203, the moving first connecting rod 202 drives the first expansion network frame 301 to slide laterally along the direction of the stowage and deployment network frame 103 as a whole. The moving first expansion network frame 301 drives the second protection net 302, the first spring 203 and the first slide bar 303 to move. The moving first spring 203 is stretched. The moving first slide bar 303 is moved by The first slide groove 304 slides in the first extension grid 301 to guide the moving first extension grid 301 as a whole, and the moving second protection net 302 is used to expand the protection range of the retractable grid 103 and the first protection net 104. When the first extension grid 301 completes the overall horizontal sliding, the installation operation of a single device can be completed; then the operation is repeated to install multiple groups of devices, and the devices are spliced ​​by using the provided splicing strips 305 and socket slots 306, so as to quickly complete the construction operation at the power tower construction site according to actual needs, and provide safety protection for ground personnel and equipment. The specific assembly effect is as follows: Figure 1 As shown, different numbers of devices can be used to build it according to actual needs so as to control the protection range to meet the needs of different power transmission project construction sites.

[0074] When the device needs to be recovered, it is only necessary to rotate the hand wheel 404 in the opposite direction to drive the threaded column 402 to rotate in the opposite direction using the first center rod 401. The threaded column 402 rotating in the opposite direction drives the first slide 201 to move downward as a whole using the thread, and then the first extension frame 301 is reset as a whole through the stretched first spring 203, so as to retract the first extension frame 301 and the second protection net 302 into the expansion frame 103. When the first extension frame 301 is reset, the first slide 201 that continues to move drives the expansion frame 103 to be folded as a whole using the first connecting rod 202. When the threaded column 402 is separated from the first slide 201, the lower part of the first slide 201 is limited by the set protrusion 504, and then the expansion frame 103 is pressed and the first connecting rod 202 is used to drive the first slide 201 to continue to move, so that the first slide 201 can smoothly cross the protrusion 504 to complete the reset and recovery operation.

[0075] The first receiving groove 62 and the second receiving groove 63 are provided to receive the first connecting rod 202 during the folding process to prevent the first connecting rod 202 from interfering with the folding operation. The specific folding effect is as follows: Figure 8 shown.

[0076] Embodiment 2

[0077] like Figure 1-Figure 13As shown, the embodiment of the present invention also provides a safety protection device for a power transmission engineering construction site, including a protection support assembly 1 and a top support side thrust mechanism 2, wherein the protection support assembly 1 includes a support stand 101, a top frame 102, two retractable and deployable net frames 103 and two first protection nets 104;

[0078] Among them, the top frame 102 is fixedly connected to the top of the supporting frame 101, the two retractable net frames 103 are hinged to one side of the top frame 102, the two first protective nets 104 are respectively fixedly connected to the inside of the two retractable net frames 103, the outer side of the supporting frame 101 is installed with a top support side pushing mechanism 2, the inner side of the two retractable net frames 103 is slidably connected with an expansion mechanism 3, a driving mechanism 4 is installed between the supporting frame 101 and the top support side pushing mechanism 2, two limiting mechanisms 5 are symmetrically installed inside the supporting frame 101, and a plurality of ground anchor heads 61 are fixedly connected to the bottom of the supporting frame 101;

[0079] The supporting and pushing mechanism 2 is used to utilize the power of the driving mechanism 4 to drive the retractable and deployable grid frame 103 to be retracted and deployed, and to drive the expansion mechanism 3 to be retracted and deployed along the direction of the retractable and deployable grid frame 103;

[0080] The driving mechanism 4 is used to provide power for the movement of the top support and side thrust mechanism 2;

[0081] The expansion mechanism 3 is used to expand the protection range of the device.

[0082] The difference from the first embodiment is:

[0083] The expansion mechanism 3 is composed of two second expansion racks 311, six third protection nets 312, four second slide bars 313 and four second slide slots 314;

[0084] Among them, the outer sides of the two second extension frames 311 are respectively slidably connected to the inner sides of the two retractable frames 103, the six third protection nets 312 are respectively fixedly connected to the inner walls of the two second extension frames 311, the four second slide bars 313 are respectively fixedly connected to the outer sides of the two second extension frames 311, the four second slide grooves 314 are respectively opened on the inner sides of the two retractable frames 103, the outer side walls of the second slide bars 313 are slidably connected to the inner side walls of the second slide grooves 314, and two second storage grooves 63 are symmetrically opened at the bottom of the two second extension frames 311.

[0085] The supporting and pushing mechanism 2 is composed of a second slide 211, four second connecting rods 212, a first manual hydraulic pump 213 and four first hydraulic cylinders 214;

[0086] Among them, the inner wall of the second slide 211 is slidably connected to the outer wall of the supporting frame 101, one end of the four second connecting rods 212 are hinged to the inner side of the second slide 211, and the other ends of the four second connecting rods 212 are respectively hinged to the bottom of the two retractable and unfolded frames 103, the first manual hydraulic pump 213 is installed on one side of the supporting frame 101, and the four first hydraulic cylinders 214 are respectively installed on the bottom of the two first protective nets 104, and the piston rods of the four first hydraulic cylinders 214 are respectively fixedly connected to one side of the two second expansion frames 311, and the outer wall of the second connecting rod 212 is slidably connected to the inner wall of the second storage groove 63.

[0087] The driving mechanism 4 is composed of a second central rod 411, a second manual hydraulic pump 412, a lower supporting convex plate 413 and two second hydraulic cylinders 414;

[0088] Among them, the lower support protrusion 413 is fixedly connected to the bottom of the inner wall of the support frame 101, the second center rod 411 is fixedly connected between the support frame 101 and the top frame 102, the inner wall of the second slide 211 is slidably connected to the outer wall of the second center rod 411, the second manual hydraulic pump 412 is installed on one side of the support frame 101, and the two second hydraulic cylinders 414 are installed between the lower support protrusion 413 and the support frame 101, and the piston rods of the two second hydraulic cylinders 414 are fixedly connected to the bottom of the second slide 211; the rest of the structure is the same as that of Example 1.

[0089] When the device is fixed, the second manual hydraulic pump 412 is pressed to provide power for the second hydraulic cylinder 414, so that the piston rod of the second hydraulic cylinder 414 can be used to push the second slide 211 to move upward along the support frame 101, and the moving second slide 211 uses the second connecting rod 212 to drive the folding and unfolding frame 103 to unfold. When the second slide 211 successfully crosses the protrusion 504, the unfolding angle of the folding and unfolding frame 103 reaches the maximum. The protrusion 504 is provided to prevent the failure of the second manual hydraulic pump 412, which leads to the failure to provide support for the bottom of the second slide 211, and causes the folding and unfolding frame 103 to fall back after unfolding, thereby improving the overall safety of the device.

[0090] When the unfolding operation of the folding and unfolding grid 103 is completed, the first manual hydraulic pump 213 is pressed to provide power for the first hydraulic cylinder 214, so that the piston rod of the first hydraulic cylinder 214 can be used to push the second expansion grid 311 to move laterally in the direction of the folding and unfolding grid 103, and the moving second expansion grid 311 drives the third protection net 312 and the second slide bar 313 to move, and the moving third protection net 312 expands the protection range of the first protection net 104, and the moving second slide bar 313 guides the moving second expansion grid 311 by sliding in the second slide groove 314. When the action of the first hydraulic cylinder 214 is completed, the installation operation of a single device can be completed, and then the operation is repeated to install multiple groups of devices, so as to quickly complete the construction operation at the tower construction site according to actual needs and provide safety protection for ground personnel and equipment.

[0091] When recovery is required, the piston rod of the first hydraulic cylinder 214 drives the second extended grid 311 to be reset as a whole, and then the piston rod of the second hydraulic cylinder 414 drives the second slide 211 to cross the protrusion 504 for reset, so that the reset second slide 211 drives the second connecting rod 212 to store and fold the unfolded retractable grid 103.

[0092] The second center rod 411 is used to guide the second slide 211 that moves up and down.

[0093] Compared with the first embodiment, the present embodiment adopts a split design for the lateral drive structure of the unfolding and expansion mechanism 3 of the stowage and unfolding grid 103, so that the unfolding and lateral drive structures are relatively independent, thereby increasing the overall stability of the device and making the operation relatively simple. However, the overall cost of the device is relatively high, and the second manual hydraulic pump 412, the second hydraulic cylinder 414, the first manual hydraulic pump 213 and the first hydraulic cylinder 214 will seriously increase the overall weight of the device, making it inconvenient to carry and operate.

[0094] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A safety protection device for a power transmission engineering construction site, comprising a protection support assembly (1) and a top support and side thrust mechanism (2), characterized in that: The protection support assembly (1) comprises a support stand (101), a top frame (102), two retractable net frames (103) and two first protection nets (104); The top frame (102) is fixedly connected to the top of the supporting frame (101), the two retractable net frames (103) are hinged to one side of the top frame (102), the two first protective nets (104) are respectively fixedly connected to the inside of the two retractable net frames (103), the top support side pushing mechanism (2) is installed on the outside of the supporting frame (101), the inside of the two retractable net frames (103) are slidably connected with an expansion mechanism (3), a driving mechanism (4) is installed between the supporting frame (101) and the top support side pushing mechanism (2), two limiting mechanisms (5) are symmetrically installed inside the supporting frame (101), and a plurality of ground anchor heads (61) are fixedly connected to the bottom of the supporting frame (101); The supporting and pushing mechanism (2) utilizes the power of the driving mechanism (4) to drive the retractable and deployable net frame (103) to be retracted and deployed, and drives the expansion mechanism (3) to be retracted and deployed along the direction of the retractable and deployable net frame (103); Wherein, the driving mechanism (4) is used to provide power for the movement of the supporting and pushing mechanism (2); Wherein, the expansion mechanism (3) is used to expand the protection range of the device.

2. The power transmission engineering construction site safety protection device according to claim 1 is characterized by: Two first receiving grooves (62) are symmetrically arranged on the outer side of the supporting stand (101).

3. The power transmission engineering construction site safety protection device according to claim 1 is characterized by: The two limiting mechanisms (5) each comprise a threaded through hole (501), a threaded sleeve (502), two limiting plates (503), two protrusions (504) and two third springs (505); The threaded through hole (501) is provided on the outer side of the supporting stand (101), the outer wall of the threaded sleeve (502) is threadedly connected to the inner wall of the threaded through hole (501), the two limiting plates (503) are slidably connected to the inner wall of the threaded sleeve (502), the two protrusions (504) are respectively fixedly connected to the non-adjacent sides of the two limiting plates (503), one end of the two third springs (505) are respectively fixedly connected to one side of the two limiting plates (503), and the other ends of the two third springs (505) are both fixedly connected to the middle part of the inner wall of the threaded sleeve (502).

4. The safety protection device for construction site of power transmission engineering according to any one of claims 1 to 3, characterized in that: The expansion mechanism (3) is composed of two first expansion grids (301), two second protection nets (302), four first slide bars (303), four first slide grooves (304), a splicing bar (305) and a socket slot (306); The outer sides of the two first extension frames (301) are respectively slidably connected to the inner sides of the two retractable and unfoldable frames (103); the two second protection nets (302) are respectively fixedly connected to the inner side walls of the two first extension frames (301); the four first slide bars (303) are respectively fixedly connected to the outer sides of the two first extension frames (301); the four first slide grooves (304) are respectively opened on the inner sides of the two retractable and unfoldable frames (103); the outer side walls of the first slide bars (303) are slidably connected to the inner side walls of the first slide grooves (304); a splicing strip (305) is provided on one side of one of the first extension frames (301); a socket slot (306) is opened on one side of the other first extension frame (301); the splicing strip (305) is matched with the socket slot (306).

5. The power transmission engineering construction site safety protection device according to claim 4 is characterized by: The supporting and pushing mechanism (2) is composed of a first sliding frame (201), four first connecting rods (202) and four first springs (203); The inner wall of the first slide (201) is slidably connected to the outer wall of the supporting stand (101), one end of the four first connecting rods (202) are hinged to the inner side of the first slide (201), and the other ends of the four first connecting rods (202) are respectively hinged to the bottom of the two first extended grids (301), one end of the four first springs (203) are fixedly connected to the outer side of the top frame (102), and the other ends of the four first springs (203) are respectively fixedly connected to one side of the two first extended grids (301).

6. The power transmission engineering construction site safety protection device according to claim 5 is characterized by: The driving mechanism (4) is composed of a first central rod (401), a threaded column (402), a lower supporting plate (403), a hand wheel (404), a cross connecting rod (405), a limiting plate (406) and a second spring (407); The lower support plate (403) is fixedly connected to the bottom of the inner side wall of the support frame (101), one end of the first center rod (401) is rotatably connected to the inner side wall of the lower support plate (403), the bottom of the threaded column (402) is plugged into the top of the first center rod (401), the hand wheel (404) is fixedly connected to the bottom of the first center rod (401), and one end of the cross connecting rod (405) is rotatably connected to the top of the top frame (102). At the bottom, the other end of the cross connecting rod (405) passes through the inner wall of the threaded column (402) and is fixedly connected to the top of the limiting plate (406), the outer wall of the limiting plate (406) is slidably connected to the inner wall of the threaded column (402), the second spring (407) is fixedly connected between one side of the limiting plate (406) and the inner wall of the threaded column (402), and the outer wall of the threaded column (402) is threadedly connected to the inner wall of the first slide (201).

7. The power transmission engineering construction site safety protection device according to claim 5 is characterized by: Two second receiving grooves (63) are symmetrically provided at the bottom of the two first extension racks (301), and the outer side wall of the first connecting rod (202) is slidably connected to the inner side wall of the second receiving groove (63).

8. The power transmission engineering construction site safety protection device according to any one of claims 1 to 3, characterized in that: The expansion mechanism (3) is composed of two second expansion racks (311), six third protection nets (312), four second slide bars (313) and four second slide grooves (314); The outer sides of the two second extension frames (311) are respectively slidably connected to the inner sides of the two retractable and unfoldable frames (103); the six third protection nets (312) are respectively fixedly connected to the inner side walls of the two second extension frames (311); the four second slide bars (313) are respectively fixedly connected to the outer sides of the two second extension frames (311); the four second slide grooves (314) are respectively opened on the inner sides of the two retractable and unfoldable frames (103); the outer side walls of the second slide bars (313) are slidably connected to the inner side walls of the second slide grooves (314); and two second storage grooves (63) are symmetrically opened at the bottoms of the two second extension frames (311).

9. The power transmission engineering construction site safety protection device according to claim 8 is characterized by: The supporting and pushing mechanism (2) is composed of a second sliding frame (211), four second connecting rods (212), a first manual hydraulic pump (213) and four first hydraulic cylinders (214); The inner wall of the second slide (211) is slidably connected to the outer wall of the supporting frame (101), one end of the four second connecting rods (212) are hinged to the inner side of the second slide (211), and the other ends of the four second connecting rods (212) are respectively hinged to the bottom of the two retractable and deployable grids (103), the first manual hydraulic pump (213) is installed on one side of the supporting frame (101), the four first hydraulic cylinders (214) are respectively installed on the bottom of the two first protective nets (104), the piston rods of the four first hydraulic cylinders (214) are respectively fixedly connected to one side of the two second expansion grids (311), and the outer wall of the second connecting rod (212) is slidably connected to the inner wall of the second storage groove (63).

10. The power transmission engineering construction site safety protection device according to claim 9 is characterized by: The driving mechanism (4) is composed of a second central rod (411), a second manual hydraulic pump (412), a lower supporting convex plate (413) and two second hydraulic cylinders (414); The lower support convex plate (413) is fixedly connected to the bottom of the inner wall of the support frame (101), the second center rod (411) is fixedly connected between the support frame (101) and the top frame (102), the inner wall of the second slide (211) is slidably connected to the outer wall of the second center rod (411), the second manual hydraulic pump (412) is installed on one side of the support frame (101), and the two second hydraulic cylinders (414) are both installed between the lower support convex plate (413) and the support frame (101), and the piston rods of the two second hydraulic cylinders (414) are both fixedly connected to the bottom of the second slide (211).

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