Multi-station synchronous drilling device for main beam steel pipe of heliostat support and installation method

Abstract

The invention discloses a multi-station synchronous drilling device for a main beam steel pipe of a heliostat support, which comprises an integral frame type rack serving as a mounting foundation, guide positioning seats are uniformly distributed on the rack, and the guide positioning seats are matched with beam supporting plates on the main beam steel pipe to realize circumferential positioning of the main beam steel pipe; and at least three groups of tapper assemblies are arranged on the rack. The invention further provides an installation method of the multi-station synchronous drilling device for the main beam steel pipe of the heliostat support and a working method of the multi-station synchronous drilling device for the main beam steel pipe of the heliostat support. The device is of an integral frame structure and is good in stability; a workpiece is clamped at one time, multi-station bidirectional one-time drilling forming is achieved, the machining precision is guaranteed, and the production efficiency is greatly improved; drilling operation of different hole diameters, hole distances and hole depths can be met, and high flexibility and adaptability are achieved; fast feeding, working feeding, working retreating, fast retreating and stopping can be automatically carried out, automation is achieved, and the requirement for large-scale production is met.

Description

Technical Field

[0001] The present invention belongs to the technical field of manufacturing concentrated solar thermal power generation components, and specifically relates to a multi-station synchronous drilling device and an installation method for a main beam steel pipe of a heliostat support. Background Art

[0002] Under the global trend of green and low-carbon energy transformation, solar thermal power generation, as a new energy technology that combines cleanliness with energy storage and regulation capabilities, is gradually showing its unique charm and broad development prospects.

[0003] Heliostat brackets are one of the important components of CSP heliostats, and the market demand is rising. With the increase in the construction of large-scale solar thermal power stations, the quality requirements for heliostat brackets are becoming increasingly stringent.

[0004] In the main beam of the heliostat support, the thin-walled steel pipe with a length of nearly 6 meters is an important part of the main beam. There are 6 groups of φ30 through holes distributed on it. The size and shape tolerance requirements are high, and the position and coaxiality of each group of holes need to be guaranteed. These 6 groups of holes serve as the positioning reference in the subsequent assembly process, and their importance is self-evident.

[0005] As the supporting structure of heliostat, the main beam has high precision requirements and large quantity demand. The traditional drilling method is restricted by factors such as equipment capacity and positioning method. It is difficult to ensure the accuracy of the hole, with low production efficiency, high labor cost and relatively high defective rate. It cannot meet the demand for heliostat support capacity in the rapid development of solar thermal power generation industry.

[0006] In view of the above shortcomings of the prior art, the present invention is proposed. Summary of the invention

[0007] The purpose of the present invention is to solve the problems of inaccurate hole position, unstable quality, low production efficiency and inability to meet mass production during the drilling process of the main beam steel pipe. The present invention provides a multi-station synchronous drilling device for the main beam steel pipe of the heliostat bracket, which improves the drilling accuracy, stabilizes the quality, and increases the production efficiency several times, reduces the cost, and meets the needs of mass production.

[0008] The technical solution of the present invention is:

[0009] A multi-station synchronous drilling device for a main beam steel pipe of a heliostat support includes an integral frame frame 1 as an installation base, the frame 1 is evenly provided with V-shaped rubber wheel rollers 6 and steel pipe clamps 4 for supporting the main beam steel pipe 12, the bottom of the frame 1 is provided with adjustable feet 8, and the frame 1 is divided into a left frame section 101, a middle frame section 102 and a right frame section 103.

[0010] The end of the left section 101 of the frame is equipped with a quick clamp support assembly 2 for applying pressure to the left end of the main beam steel pipe 12 to achieve quick clamping and axial positioning, and the end of the right section 103 of the frame is equipped with an end positioning seat 10 for positioning the right end of the main beam steel pipe 12;

[0011] The frame 1 is evenly provided with guide and positioning seats 5, which cooperate with the supporting beam plates 11 on the main beam steel pipe 12 to achieve circumferential positioning of the main beam steel pipe 12;

[0012] The entrance of the guide and positioning seat 5 is provided with a guide slope 503, and the bottom is provided with a positioning groove 501. The guide slope 503 is used to guide the support beam plate 11 when it falls, and guides the lower end of the support beam plate 11 to accurately fit into the positioning groove 501;

[0013] The inclination angle of the guiding slope 503 is preferably set to 6°.

[0014] The positioning surface 502 of the guide positioning seat 5 is a V-shaped structure, which can prevent the main beam steel pipe 12 from rotating under force in the drilling hole, thereby improving the stability of the drilling hole;

[0015] At least three groups of hole opener assemblies 3 are arranged on the frame 1, and each hole opener assembly 3 includes dovetail guide rails 309 and dovetail sliders 311 symmetrically arranged on both sides of the main beam steel pipe 12, and a multi-axis device mounting seat 312 is fixed on the dovetail slider 311, and a hole opening motor 303, a hole opening reducer 305 and a multi-axis device 306 are installed on the multi-axis device mounting seat 312, and more than two hole openers 307 arranged according to the designed spacing are installed on the multi-axis device 306;

[0016] A screw nut seat 310 is provided at the lower part of the multi-axis mounting seat 312, and screw rods 308 are screwed into the screw nut seats 310 on both sides respectively. The screw rods 308 on both sides are connected by a coupling 304, and the screw rod 308 on one side is connected to the feed reducer 302 of the feed motor 301 through another coupling 304, and the feed motor 301 is driven to realize the synchronous advancement or retreat of the hole openers 307 on both sides.

[0017] The preferred technical solution provided by the present invention is:

[0018] In at least one group of hole opener assemblies 3, the multi-axis device 306 is covered with a frame-type mounting casting 701, and a hole opener positioning plate 702 is installed at one end of the frame-type mounting casting 701 to realize the positioning of the hole opener 307 to the designed spacing; the other end of the frame-type mounting casting 701 is installed on a casting mounting seat 703 that replaces the multi-axis device mounting seat 312.

[0019] Furthermore,

[0020] The hole opener 307 is a super-hard alloy hole opener, and the center of each hole opener 307 contains a guide drill bit for positioning and guiding during cutting.

[0021] Furthermore,

[0022] The quick clamp support assembly 2 includes a quick clamp support seat 201, and the quick clamp 202 is fixed to the quick clamp support seat 201 with a hexagonal head bolt, and a tail pressure plate 203 is installed at the telescopic end of the quick clamp 202. The tail pressure plate 203 has an open groove to facilitate the entry and exit of the hook when lifting the main beam steel pipe 12.

[0023] Furthermore,

[0024] An elbow-type vertical clamp 9 is installed on the upper end of one side of each guide and positioning seat 5 to clamp and fix the introduced supporting beam plate 11.

[0025] Furthermore,

[0026] The dovetail guide rail (309) and the dovetail slider (311) are both made of high-carbon high-chromium martensitic stainless steel 102Cr17Mo.

[0027] The present invention also provides a method for installing a multi-station synchronous drilling device for a main beam steel pipe of a heliostat support, comprising the following steps:

[0028] Step S1, installing an adjustable foot 8 at the lower end of the rack 1, fixing the adjustable foot 8 to the ground, and leveling the rack 1 through the adjustable foot 8;

[0029] Step S2, using hexagonal bolts to respectively install the steel pipe clamp 4 and the V-shaped rubber wheel roller 6 at corresponding positions on the upper end surface of the frame 1;

[0030] Step S3, installing the guide positioning seat 5 at the corresponding position of the frame 1 with a hexagonal bolt, and installing the elbow type vertical clamp 9 at the upper end of the guide positioning seat 5 with a hexagonal bolt;

[0031] Step S4, fix the quick clamp 202 on the quick clamp support seat 201 with a hexagonal bolt, install the tail pressure plate 203 at the telescopic end of the quick clamp 202, and then install the quick clamp support assembly 2 on the end of the left section 101 of the frame with a hexagonal bolt;

[0032] Step S5, the end head positioning seat 10 is fixedly installed on the end of the right section 103 of the frame with a hexagonal bolt;

[0033] Step S6, assembling the hole opener assembly 3;

[0034] Install the dovetail guide rail 309 at the corresponding position of the frame 1, insert the two sets of dovetail sliders 311 into the dovetail guide rail 309, then install the screw nut seat 310 at the bottom of the multi-axis device mounting seat 312, install its assembly on the dovetail slider 311, and screw the screw 308 into the screw nut seat 310; connect the feed motor 301 and the feed reducer 302, install their assembly at the corresponding position of the frame 1, connect the screw 308 and the feed reducer 302 with a coupling 304, and connect and fix the two screws 308 with another coupling 304; connect the hole opening motor 303 and the hole opening reducer 305, install their assembly on the multi-axis device mounting seat 312, and install two hole openers 307 on the multi-axis device 306, align the hole of the multi-axis device 306 with the axis of the hole opening reducer 305, and fix it on the multi-axis device mounting seat 312;

[0035] Repeat the above sequence according to the design, and install the hole openers 3 located at other positions of the frame 1. After the installation is completed, ensure that all parts move smoothly;

[0036] Step S7, after the assembly is completed, adjust the centers of each part to the same horizontal height, so that the centers of the steel pipe clamp 4 and the V-shaped rubber roller 6 are kept in a line, ensuring that the main beam steel pipe 12 and the V-shaped rubber roller 6 can fully contact, and ensuring that the supporting beam plate 11 and the V-shaped positioning surface of the guide positioning seat 5 can fully contact. At the same time, the height and spacing of the hole opener 307 must be adjusted to meet the requirements.

[0037] Preferably,

[0038] In the step S6, a group of hole opener assemblies 3 located in the middle section 102 of the frame use a casting mounting seat 703 to replace the multi-axis mounting seat 312; the multi-axis 306 is covered with a frame-type mounting casting 701, and a hole opener positioning plate 702 is installed at one end of the frame-type mounting casting 701. Then, the two hole openers 307 are connected to the multi-axis 306 through the holes of the hole opener positioning plate 702, and finally, the holes of the multi-axis 306 are aligned with the axis of the hole opening reducer 305 and fixed on the casting mounting seat 703.

[0039] The present invention also provides a working method of a multi-station synchronous drilling device for a main beam steel pipe of a heliostat support, comprising the following steps:

[0040] Step a, transport the main beam steel pipe 12 from the welding station to the top of the frame 1 through the conveying device, the supporting beam plate 11 on the main beam steel pipe 12 slowly falls along the guiding inclined surface of the guide positioning seat 5, and falls on the V-shaped rubber wheel roller 6, and the tail pressure plate 203 is driven by the quick clamp 202 to push the main beam steel pipe 12 to move to the right until the end of the main beam steel pipe 12 is fully in contact with the end surface of the end positioning seat 10 and then stops, completing the axial positioning of the main beam;

[0041] Step b, the lower end of the supporting beam plate 11 is in full contact with the V-shaped positioning surface of the guide positioning seat 5, the elbow-type vertical clamp 9 presses the upper end of the supporting beam plate 11, and the steel pipe clamp 4 clamps the outer circle of the main beam steel pipe 12 to complete the circumferential positioning of the main beam steel pipe 12;

[0042] Step c, start the feed motor 301 and the hole opening motor 303, the screw rod 308 and the hole opening device assembly 3 move synchronously, and all the hole opening devices 307 perform fast forward, working forward, working backward, and fast backward synchronously, and the drilling is completed;

[0043] Step d, the hole opener assembly 3 returns to the initial position, and the feed motor 301 and the hole opening motor 303 stop;

[0044] Step e, after the drilling work is completed, loosen the quick clamp 202, the steel pipe clamp 4 and the elbow clamp 9, release the positioning clamp of the main beam, and use the crane to lift the main beam to the storage rack;

[0045] Step f, repeat steps a to e to complete the drilling of the next main beam steel pipe.

[0046] Beneficial effects:

[0047] 1. The frame of this device is an integral frame structure with good stability;

[0048] 2. The workpiece is clamped once, and multi-station bidirectional drilling is performed once, which ensures the processing accuracy, greatly improves the production efficiency, greatly reduces the labor intensity of the operator, and reduces the manufacturing cost;

[0049] 3. It can meet the drilling operations of different hole diameters, hole spacings and hole depths, and has strong flexibility and adaptability;

[0050] 4. The operation of this device has been programmed, and it can automatically perform fast forward, working forward, working backward, fast backward and stop, realizing automation and meeting the needs of large-scale production.

[0051] Actual use effect:

[0052] The use of this device can improve drilling accuracy, ensure the coaxiality and hole spacing of each group of holes, improve product quality, avoid manual drilling errors, and can save time and manpower, greatly improve production efficiency, and reduce manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0054] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0055] Figure 3 It is a schematic diagram of the three-dimensional structure of the quick-clamp support assembly 2;

[0056] Figure 4 It is a schematic diagram of the three-dimensional structure of the hole opener assembly 3;

[0057] Figure 5 It is a three-dimensional structural schematic diagram of the multi-axis device mounting seat 312;

[0058] Figure 6 It is a schematic diagram of the three-dimensional structure of the guide positioning seat 5;

[0059] Figure 7 It is a three-dimensional structural schematic diagram of another embodiment of the hole opener 3;

[0060] Figure 8 for Figure 7 A schematic diagram of the three-dimensional structure of the casting mounting seat 703;

[0061] Fig. 9 It is a three-dimensional structural schematic diagram of the end positioning seat 10;

[0062] Meaning of the symbols in the attached drawings:

[0063] 1. Rack,

[0064] 101. left section of the rack, 102. middle section of the rack, 103. right section of the rack;

[0065] 2. Quick clamp support assembly,

[0066] 201. Quick clamp support seat, 202. Quick clamp, 203. Tail pressure plate;

[0067] 3. Hole opener assembly,

[0068] 301. feed motor, 302. feed reducer, 303. hole opening motor, 304. coupling, 305. hole opening reducer, 306. multi-axis device, 307. hole opener, 308. lead screw, 309. dovetail guide rail, 310. lead screw nut seat, 311. dovetail slider, 312. multi-axis device mounting seat;

[0069] 4.Steel pipe clamp,

[0070] 5. Guide and positioning seat,

[0071] 501. positioning groove, 502. positioning surface, 503. guiding slope;

[0072] 6. V-type rubber wheel roller,

[0073] 701. Frame-mounted casting, 702. Hole opener positioning plate, 703. Casting mounting seat;

[0074] 8. Adjustable feet, 9. Elbow type vertical clamp, 10. End positioning seat, 11. Support beam plate, 12. Main beam steel pipe. DETAILED DESCRIPTION

[0075] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0076] Figure 1 It is a schematic diagram of the overall structure of the present invention, Figure 2 The present invention is a three-dimensional structural schematic diagram, combined with the accompanying drawings, a multi-station synchronous drilling device for the main beam steel pipe of the heliostat support, including an integral frame frame 1 as an installation basis, the frame 1 is evenly provided with V-shaped rubber wheel rollers 6 and steel pipe clamps 4 for supporting the main beam steel pipe 12, the bottom of the frame 1 is provided with adjustable feet 8, and the frame 1 is divided into a left frame section 101, a middle frame section 102 and a right frame section 103.

[0077] The end of the left section 101 of the frame is equipped with a quick clamp support assembly 2 for applying pressure to the left end of the main beam steel pipe 12 to achieve quick clamping and axial positioning, and the end of the right section 103 of the frame is equipped with an end positioning seat 10 ( Fig. 9 The three-dimensional structure schematic diagram of the middle end positioning seat 10 is shown).

[0078] Figure 3 Schematic diagram of the three-dimensional structure of the quick-clamp support assembly 2; Figure 3 As shown in

[0079] The quick clamp support assembly 2 includes a quick clamp support seat 201, and the quick clamp 202 is fixed to the quick clamp support seat 201 with a hexagonal head bolt, and a tail pressure plate 203 is installed at the telescopic end of the quick clamp 202. The tail pressure plate 203 has an open groove to facilitate the entry and exit of the hook when lifting the main beam steel pipe 12.

[0080] The frame 1 is evenly provided with guide and positioning seats 5, which cooperate with the supporting beam plates 11 on the main beam steel pipe 12 to achieve circumferential positioning of the main beam steel pipe 12;

[0081] Figure 6 Schematic diagram of the three-dimensional structure of the guide positioning seat 5; Figure 6 As shown in

[0082] The entrance of the guide positioning seat 5 is set as a 6° guide slope 503, and a positioning groove 501 is provided at the bottom. The guide slope 503 is used to guide the support beam plate 11 when it falls, and guides the lower end of the support beam plate 11 to accurately fit into the positioning groove 501;

[0083] The positioning surface 502 of the guide positioning seat 5 is a V-shaped structure, which can prevent the main beam steel pipe 12 from rotating under force in the drilling hole, thereby improving the stability of the drilling hole;

[0084] An elbow-type vertical clamp 9 is installed on the upper end of one side of each guide and positioning seat 5 to clamp and fix the introduced supporting beam plate 11.

[0085] Figure 4 is a schematic diagram of the three-dimensional structure of the hole opener assembly 3, Figure 5 is a three-dimensional structural diagram of the multi-axis mounting seat 312; Figure 4 , Figure 5 At least three groups of hole opener assemblies 3 are arranged on the frame 1, and each hole opener assembly 3 includes dovetail guide rails 309 and dovetail sliders 311 symmetrically arranged on both sides of the main beam steel pipe 12, and a multi-axis mounting seat 312 is fixed on the dovetail slider 311, and a hole opening motor 303, a hole opening reducer 305 and a multi-axis 306 are installed on the multi-axis mounting seat 312, and more than two hole openers 307 arranged according to the designed spacing are installed on the multi-axis 306; the hole opener 307 is a super-hard alloy hole opener, and the center of each hole opener 307 contains a guide drill bit for positioning and guiding during cutting.

[0086] Among them, since the main beam steel pipe will eventually be hot-dip galvanized, in order not to affect the quality of hot-dip galvanizing, cutting fluid cannot be used in the drilling process, and only water cooling can be used. In order to prevent rust, the dovetail guide rail 309 and dovetail slider 311 are both made of corrosion-resistant high-carbon high-chromium martensitic stainless steel 102Cr17Mo, which has excellent strength and hardness, as well as good wear resistance and corrosion resistance.

[0087] A screw nut seat 310 is provided at the lower part of the multi-axis mounting seat 312, and screw rods 308 are screwed into the screw nut seats 310 on both sides respectively. The screw rods 308 on both sides are connected by a coupling 304, and the screw rod 308 on one side is connected to the feed reducer 302 of the feed motor 301 through another coupling 304, and the feed motor 301 is driven to realize the synchronous advancement or retreat of the hole openers 307 on both sides.

[0088] Figure 7 is a schematic diagram of the three-dimensional structure of another embodiment of the hole opener 3, Figure 8 for Figure 7 Schematic diagram of the three-dimensional structure of the casting mounting seat 703; Figure 7 , Figure 8As shown in the technical solution of another embodiment provided by the present invention, in at least one group of hole opener assemblies 3, the multi-axis device 306 is sheathed with a frame-type mounting casting 701, and a hole opener positioning plate 702 is installed at one end of the frame-type mounting casting 701 to realize the positioning of the hole opener 307 to the designed spacing; the other end of the frame-type mounting casting 701 is installed on a casting mounting seat 703 that replaces the multi-axis device mounting seat 312.

[0089] The present invention also provides a method for installing a multi-station synchronous drilling device for a main beam steel pipe of a heliostat support, comprising the following steps:

[0090] Step S1, installing an adjustable foot 8 at the lower end of the rack 1, fixing the adjustable foot 8 to the ground, and leveling the rack 1 through the adjustable foot 8;

[0091] Step S2, using hexagonal bolts to respectively install the steel pipe clamp 4 and the V-shaped rubber wheel roller 6 at corresponding positions on the upper end surface of the frame 1;

[0092] Step S3, installing the guide positioning seat 5 at the corresponding position of the frame 1 with a hexagonal bolt, and installing the elbow type vertical clamp 9 at the upper end of the guide positioning seat 5 with a hexagonal bolt;

[0093] Step S4, fix the quick clamp 202 on the quick clamp support seat 201 with a hexagonal bolt, install the tail pressure plate 203 at the telescopic end of the quick clamp 202, and then install the quick clamp support assembly 2 on the end of the left section 101 of the frame with a hexagonal bolt;

[0094] Step S5, the end head positioning seat 10 is fixedly installed on the end of the right section 103 of the frame with a hexagonal bolt;

[0095] Step S6, assembling the hole opener assembly 3;

[0096] Install the dovetail guide rail 309 at the corresponding position of the frame 1, insert the two sets of dovetail sliders 311 into the dovetail guide rail 309, then install the screw nut seat 310 at the bottom of the multi-axis device mounting seat 312, install its assembly on the dovetail slider 311, and screw the screw 308 into the screw nut seat 310; connect the feed motor 301 and the feed reducer 302, install their assembly at the corresponding position of the frame 1, connect the screw 308 and the feed reducer 302 with a coupling 304, and connect and fix the two screws 308 with another coupling 304; connect the hole opening motor 303 and the hole opening reducer 305, install their assembly on the multi-axis device mounting seat 312, and install two hole openers 307 on the multi-axis device 306, align the hole of the multi-axis device 306 with the axis of the hole opening reducer 305, and fix it on the multi-axis device mounting seat 312;

[0097] Repeat the above sequence according to the design, and install the hole openers 3 located at other positions of the frame 1. After the installation is completed, ensure that all parts move smoothly;

[0098] Step S7, after the assembly is completed, adjust the centers of each part to the same horizontal height, so that the centers of the steel pipe clamp 4 and the V-shaped rubber roller 6 are kept in a line, ensuring that the main beam steel pipe 12 and the V-shaped rubber roller 6 can fully contact, and ensuring that the supporting beam plate 11 and the V-shaped positioning surface of the guide positioning seat 5 can fully contact. At the same time, the height and spacing of the hole opener 307 must be adjusted to meet the requirements.

[0099] in,

[0100] In the step S6, one group of hole opener assemblies 3, in this embodiment, uses the hole opener assembly 3 of the middle section 102 of the frame 1, and uses the casting mounting seat 703 to replace the multi-axis mounting seat 312; the multi-axis 306 is sheathed with a frame-type mounting casting 701, and a hole opener positioning plate 702 is installed at one end of the frame-type mounting casting 701, and then the two hole openers 307 are connected to the multi-axis 306 through the holes of the hole opener positioning plate 702, and finally the hole of the multi-axis 306 is aligned with the axis of the hole opening reducer 305, and fixed on the casting mounting seat 703.

[0101] The present invention also provides a working method of a multi-station synchronous drilling device for a main beam steel pipe of a heliostat support, comprising the following steps:

[0102] Step a, transport the main beam steel pipe 12 from the welding station to the top of the frame 1 through the conveying device, the supporting beam plate 11 on the main beam steel pipe 12 slowly falls along the guiding inclined surface of the guide positioning seat 5, and falls on the V-shaped rubber wheel roller 6, and the tail pressure plate 203 is driven by the quick clamp 202 to push the main beam steel pipe 12 to move to the right until the end of the main beam steel pipe 12 is fully in contact with the end surface of the end positioning seat 10 and then stops, completing the axial positioning of the main beam;

[0103] Step b, the lower end of the supporting beam plate 11 is in full contact with the V-shaped positioning surface of the guide positioning seat 5, the elbow-type vertical clamp 9 presses the upper end of the supporting beam plate 11, and the steel pipe clamp 4 clamps the outer circle of the main beam steel pipe 12 to complete the circumferential positioning of the main beam steel pipe 12;

[0104] Step c, start the feed motor 301 and the hole opening motor 303, the screw rod 308 and the hole opening device assembly 3 move synchronously, and all the hole opening devices 307 perform fast forward, working forward, working backward, and fast backward synchronously, and the drilling is completed;

[0105] Step d, the hole opener assembly 3 returns to the initial position, and the feed motor 301 and the hole opening motor 303 stop;

[0106] Step e, after the drilling work is completed, loosen the quick clamp 202, the steel pipe clamp 4 and the elbow clamp 9, release the positioning clamp of the main beam, and use the crane to lift the main beam to the storage rack;

[0107] Step f, repeat steps a to e to complete the drilling of the next main beam steel pipe.

[0108] If the cutting edge of the hole opener becomes blunt or chipped during use, it should be replaced in time to ensure its working efficiency and hole opening quality.

[0109] The device of the present invention is used to drill holes in the main beam steel pipe 12 after the main beam of the heliostat support is welded. A total of 6 groups of holes are drilled, and all processing is completed synchronously by multiple stations in one clamping. These 6 groups of holes need to be used as positioning references for subsequent assembly, so the position accuracy of these 6 groups of holes is required to be high, and the coaxiality requirements of each group of holes need to be guaranteed.

[0110] The present invention adopts a dovetail slide rail to achieve accurate and repeatable positioning;

[0111] The screw drive is used to realize bidirectional synchronous feeding motion, driving the hole opener components on both sides to work simultaneously. The workpiece is clamped at one time, and the multi-station bidirectional drilling is performed at one time, which greatly improves the production efficiency and processing accuracy.

[0112] The workpiece is pneumatically clamped and released, making clamping easy.

[0113] The described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A multi-station synchronous drilling device for a main beam steel pipe of a heliostat support, comprising an integral frame frame (1) as an installation base, the frame (1) being evenly provided with V-shaped rubber-wheeled rollers (6) and steel pipe clamps (4) for supporting the main beam steel pipe (12), the bottom of the frame (1) being provided with adjustable feet (8), the frame (1) being divided into a frame left section (101), a frame middle section (102) and a frame right section (103), characterized in that: A quick-clamp support assembly (2) is installed at the end of the left section (101) of the frame for applying pressure to the left end of the main beam steel pipe (12) to achieve quick clamping and axial positioning, and an end head positioning seat (10) is installed at the end of the right section (103) of the frame for positioning the right end of the main beam steel pipe (12); The frame (1) is evenly provided with guide positioning seats (5), and the guide positioning seats (5) cooperate with the supporting beam plates (11) on the main beam steel pipe (12) to achieve circumferential positioning of the main beam steel pipe (12); The entrance of the guide positioning seat (5) is provided with a guide slope (503), and the bottom is provided with a positioning groove (501). The guide slope (503) is used to guide the supporting beam plate (11) when it falls, and guides the lower end of the supporting beam plate (11) to accurately fit into the positioning groove (501); The positioning surface (502) of the guide positioning seat (5) is a V-shaped structure, which can prevent the main beam steel pipe (12) from rotating under force in the drilling hole, thereby improving the stability of the drilling hole; At least three groups of hole opener assemblies (3) are arranged on the frame (1), and each hole opener assembly (3) includes dovetail guide rails (309) and dovetail sliders (311) symmetrically arranged on both sides of the main beam steel pipe (12), a multi-axis device mounting seat (312) is fixed on the dovetail slider (311), a hole opening motor (303), a hole opening reducer (305) and a multi-axis device (306) are installed on the multi-axis device mounting seat (312), and more than two hole openers (307) arranged according to the designed spacing are installed on the multi-axis device (306); A screw nut seat (310) is provided at the bottom of the multi-axis device mounting seat (312), and screws (308) are screwed into the screw nut seats (310) on both sides respectively. The screws (308) on both sides are connected through a coupling (304), and the screw (308) on one side is connected to the feed reducer (302) of the feed motor (301) through another coupling (304), and the feed motor (301) is driven to realize the synchronous advancement or retreat of the hole openers (307) on both sides.

2. The multi-station synchronous drilling device for the main beam steel pipe of the heliostat support according to claim 1 is characterized in that: In at least one group of hole opener assemblies (3), a multi-axis device (306) is sheathed with a frame-type mounting casting (701), and a hole opener positioning plate (702) is installed at one end of the frame-type mounting casting (701) to realize the positioning of the hole opener (307) to the designed spacing; the other end of the frame-type mounting casting (701) is installed on a casting mounting seat (703) that replaces the multi-axis device mounting seat (312).

3. The multi-station synchronous drilling device for the main beam steel pipe of the heliostat support according to claim 1 is characterized in that: The inclination angle of the guiding slope (503) is set to 6°.

4. The multi-station synchronous drilling device for the main beam steel pipe of the heliostat support according to claim 1 is characterized in that: The hole opener (307) is a super-hard alloy hole opener, and the center of each hole opener (307) contains a guide drill bit for positioning and guiding during cutting.

5. The multi-station synchronous drilling device for the main beam steel pipe of the heliostat support according to claim 1 is characterized in that: The quick clamp support assembly (2) comprises a quick clamp support seat (201), a quick clamp (202) is fixed to the quick clamp support seat (201) by a hexagonal bolt, and a tail pressure plate (203) is installed at the telescopic end of the quick clamp (202), and the tail pressure plate (203) has an open groove to facilitate the entry and exit of the hook when lifting the main beam steel pipe (12).

6. The multi-station synchronous drilling device for the main beam steel pipe of the heliostat support according to claim 1, characterized in that: An elbow-type vertical clamp (9) is installed on the upper end of one side of each guide and positioning seat (5) to clamp and fix the introduced supporting beam plate (11).

7. The multi-station synchronous drilling device for the main beam steel pipe of the heliostat support according to claim 1 is characterized in that: The dovetail guide rail (309) and the dovetail slider (311) are both made of high-carbon high-chromium martensitic stainless steel 102Cr17Mo.

8. A method for installing a multi-station synchronous drilling device for a main beam steel pipe of a heliostat support as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Step S1, installing an adjustable foot (8) at the lower end of the frame (1), fixing the adjustable foot (8) to the ground, and leveling the frame (1) by means of the adjustable foot (8); Step S2, using hexagonal bolts to respectively install the steel pipe clamp (4) and the V-shaped rubber wheel roller (6) at corresponding positions on the upper end surface of the frame (1); Step S3, using hexagonal bolts to install the guide positioning seat (5) at the corresponding position of the frame (1), and using hexagonal bolts to install the elbow type vertical clamp (9) on the upper end of the guide positioning seat (5); Step S4, fix the quick clamp (202) on the quick clamp support seat (201) with hexagonal bolts, install the tail pressure plate (203) at the telescopic end of the quick clamp (202), and then install the quick clamp support assembly (2) on the end of the left section (101) of the frame with hexagonal bolts; Step S5, fixing the end head positioning seat (10) to the end of the right section (103) of the frame with a hexagonal bolt; Step S6, assembling the hole opener assembly (3); Install a dovetail guide rail (309) at a corresponding position of the frame (1), insert two sets of dovetail sliders (311) into the dovetail guide rail (309), install the screw nut seat (310) at the bottom of the multi-axis device mounting seat (312), install its assembly on the dovetail slider (311), and screw the screw (308) into the screw nut seat (310); connect the feed motor (301) and the feed reducer (302), install their assembly at the corresponding position of the frame (1), and use a coupling (30 4) Connect the screw rod (308) to the feed reducer (302), and use another coupling (304) to connect and fix the two screw rods (308); connect the hole opening motor (303) and the hole opening reducer (305), and install their components on the multi-axis device mounting seat (312), and install two hole openers (307) on the multi-axis device (306), align the hole of the multi-axis device (306) with the axis of the hole opening reducer (305), and fix it on the multi-axis device mounting seat (312); Repeat the above sequence according to the design to install the hole opener components (3) located at other positions of the frame (1). After the installation is completed, ensure that all parts move smoothly; Step S7, after the assembly is completed, the centers of the various parts are adjusted to the same horizontal height, so that the centers of the steel pipe clamp (4) and the V-shaped rubber roller (6) are kept in a straight line, ensuring that the main beam steel pipe (12) and the V-shaped rubber roller (6) can fully contact each other, and ensuring that the supporting beam plate (11) and the V-shaped positioning surface of the guide positioning seat (5) can fully contact each other. At the same time, the height and spacing of the hole opener (307) must be adjusted to meet the requirements.

9. The method for installing a multi-station synchronous drilling device for a main beam steel pipe of a heliostat support according to claim 8, characterized in that: In the step S6, a group of hole opener assemblies (3) located in the middle section (102) of the frame uses a casting mounting seat (703) to replace the multi-axis mounting seat (312); the multi-axis (306) is sheathed with a frame-type mounting casting (701), and a hole opener positioning plate (702) is installed at one end of the frame-type mounting casting (701), and then two hole openers (307) are connected to the multi-axis (306) through the holes of the hole opener positioning plate (702), and finally, the hole of the multi-axis (306) is aligned with the axis of the hole opening reducer (305) and fixed on the casting mounting seat (703).

10. A method for operating a multi-station synchronous drilling device for a main beam steel pipe of a heliostat support as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Step a, transporting the main beam steel pipe (12) from the welding station to the top of the frame (1) through the conveying device, the supporting beam plate (11) on the main beam steel pipe (12) slowly falls along the guiding inclined surface of the guide positioning seat (5) and falls on the V-shaped rubber wheel roller (6), and the tail pressure plate (203) is pressed by the quick clamp (202) to push the main beam steel pipe (12) to move to the right until the end of the main beam steel pipe (12) is fully in contact with the end face of the end positioning seat (10) and then stops, completing the axial positioning of the main beam; Step b, the lower end of the supporting beam plate (11) is in full contact with the V-shaped positioning surface of the guide positioning seat (5), the elbow-type vertical clamp (9) presses the upper end of the supporting beam plate (11), and the steel pipe clamp (4) clamps the outer circle of the main beam steel pipe (12), thereby completing the circumferential positioning of the main beam steel pipe (12); Step c, starting the feed motor (301) and the hole opening motor (303), the screw rod (308) and the hole opening device assembly (3) move synchronously, and all the hole opening devices (307) perform fast forward, working forward, working backward, and fast backward synchronously, and the drilling is completed; Step d, the hole opener assembly (3) returns to the initial position, and the feed motor (301) and the hole opening motor (303) stop; Step e, after the drilling work is completed, the quick clamp (202), the steel pipe clamp (4) and the elbow clamp (9) are released to release the positioning clamp of the main beam, and the main beam is hoisted to the storage rack by a crane; Step f, repeat steps a to e to complete the drilling of the next main beam steel pipe.

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