A side turn support structure for an automatic target machine

Abstract

The utility model provides a kind of lateral rotation support structure of automatic target machine belongs to automatic target machine technical field, the lateral rotation support structure of this automatic target machine includes: pedestal, pivot assembly, lateral rotation support arm, target plate fixing bracket, rotary control mechanism and locking mechanism;The pedestal is steel rectangular bottom plate structure, and the geometric center position of pedestal is provided with circular through-hole, and the diameter of through-hole is 80 millimeters to 120 millimeters;The pivot assembly includes main shaft and bearing seat, and main shaft is hollow steel pipe structure, and main shaft passes through the circular through-hole of pedestal and is rotatably connected with pedestal by bearing seat, and bearing seat is fixedly installed below pedestal using ball bearing structure;The lateral rotation support arm is L type steel bending structure;It can solve the technical problems of insufficient bearing capacity, poor positioning accuracy, complex operation and poor stability of the lateral rotation support structure of automatic target machine in the prior art.

Description

Technical Field

[0001] This utility model belongs to the field of automatic target machine technology, and more specifically, relates to a side-turning support structure for an automatic target machine. Background Technology

[0002] Automatic target drones, as crucial equipment for shooting training and competitions, are widely used in military training, police training, sports competitions, and civilian shooting ranges. Traditional target drone support structures often employ simple fixed brackets or rotating mechanisms based on foundations, revealing numerous technical shortcomings in practical use. Existing fixed support structures cannot achieve lateral adjustment of the target plate, limiting the diversity of training subjects. Some rotatable support structures, due to unreasonable design, have severely insufficient load-bearing capacity, making them prone to structural failure when supporting large-sized targets or subjected to projectile impact. The positioning accuracy of existing rotating mechanisms is generally poor, failing to achieve precise angle positioning and affecting the consistency and repeatability of training results. Complex operation is another prominent issue; existing equipment often requires multiple people or specialized tools to complete angle adjustments, resulting in low efficiency in practical use. Poor stability manifests in the support structure's susceptibility to positional shifts under external disturbances such as wind loads and vibrations, affecting shooting accuracy. Existing support structures also suffer from high manufacturing costs, difficult maintenance, and poor adaptability, severely hindering the widespread application of automatic target drones. With the increasing demands and complexity of shooting training, there is an urgent need to develop an automatic target machine side-rotation support structure that is strong in load-bearing capacity, high in positioning accuracy, easy to operate, and stable, in order to meet the technical requirements of modern shooting training. Utility Model Content

[0003] In view of this, the present invention provides a side-turn support structure for an automatic target machine, which can solve the technical problems of insufficient load-bearing capacity, poor positioning accuracy, complex operation and poor stability of the side-turn support structure of the automatic target machine in the prior art.

[0004] This utility model is implemented as follows: This utility model provides a side-turning support structure for an automatic target machine, comprising: a base, a rotating shaft assembly, a side-turning support arm, a target plate fixing frame, a rotation control mechanism, and a locking mechanism; the base is a steel rectangular structure, with a circular through hole at its geometric center, the diameter of which is 80 mm to 120 mm; the rotating shaft assembly includes a main rotating shaft and a bearing seat, the main rotating shaft being a hollow steel tube structure, passing through the circular through hole of the base and rotatably connected to the base through the bearing seat, the bearing seat being fixedly installed inside the base using a ball bearing structure. The side-rotating support arm is an L-shaped steel curved structure. The vertical section of the side-rotating support arm is fixedly connected to the upper end face of the main rotating shaft by bolts, and the horizontal section of the side-rotating support arm extends outward to form a cantilever beam structure. The target plate fixing frame is installed at the free end of the horizontal section of the side-rotating support arm. The target plate fixing frame is connected to the side-rotating support arm through a hinge shaft to support the target plate to swing around the horizontal axis. The rotation control mechanism includes a drive gear and a driven gear. The drive gear is fixed at the lower end of the main rotating shaft, and the driven gear meshes with the drive gear and drives the main rotating shaft to rotate via a motor.

[0005] The technical effects of the side-turn support structure for an automatic target machine provided by this utility model are as follows: By combining the base, rotating shaft assembly, side-turn support arm, target plate fixing frame, rotation control mechanism, and locking mechanism, a complete automatic target machine side-turn support system is established. The base provides a stable installation foundation, the rotating shaft assembly realizes the rotation function in the vertical axis, the side-turn support arm forms a cantilever beam structure to bear the weight of the target plate, the target plate fixing frame realizes the swing adjustment of the target plate through hinge connection, the rotation control mechanism provides precise angle control through gear transmission, and the locking mechanism ensures that the system is reliably fixed in the designated position. The overall structure realizes the precise side-turn positioning function of the target machine in the horizontal plane.

[0006] Based on the above technical solution, the side-rotation support structure of the automatic target machine of this utility model can be further improved as follows: The base includes a base plate and support legs. The base plate is made of 10 mm thick steel plate, and support legs are welded to the four corners of the base plate. Each support leg is a triangular steel pipe truss structure, and the bottom of the support leg is provided with an adjusting pad for adjusting the overall level. The bearing seat is fixed to the geometric center position below the base plate by bolts.

[0007] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the base adopts a split design of base plate and support legs. The base plate provides the main structural strength and installation reference surface. The triangular steel pipe truss support legs set at the four corners distribute the load and enhance the overall stability. The setting of adjustable foot pads solves the problem of installation adaptability on uneven ground. The bearing seat is fixed at the geometric center of the base plate to ensure the concentricity and rotation accuracy of the rotating shaft. The split structure facilitates transportation and on-site assembly, and improves the practicality and applicability of the product.

[0008] Furthermore, the main rotating shaft is made of seamless steel pipe, with an outer diameter of 60 mm to 80 mm and a wall thickness of 8 mm to 12 mm; the upper end face of the main rotating shaft has 4 evenly distributed threaded holes with a diameter of 12 mm, which are used for bolt connection with the side rotating support arm; the lower end outer circumferential surface of the main rotating shaft is machined with a gear tooth structure with 40 to 60 teeth and a module of 3 to 5.

[0009] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the main shaft is made of seamless steel pipe, which ensures load-bearing capacity and service life; the reasonable outer diameter and wall thickness design reduces weight while ensuring strength; the four threaded holes evenly distributed on the upper end face realize a reliable connection with the side rotation support arm; the gear tooth structure machined at the lower end directly integrates the transmission function, avoiding the installation of additional gears, simplifying the structure and improving transmission accuracy; and the reasonable configuration of module and number of teeth ensures the smoothness of transmission and load-bearing capacity.

[0010] Furthermore, the vertical section of the side-turning support arm has a height of 200 mm to 300 mm and a horizontal section length of 800 mm to 1200 mm; the connection between the vertical section and the horizontal section adopts an arc transition structure with an arc radius of 30 mm to 50 mm; the bottom end face of the vertical section is provided with a through hole corresponding to the threaded hole on the upper end face of the main rotating shaft, and a flange structure is provided around the through hole to enhance the connection strength.

[0011] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the L-shaped structure design of the side rotation support arm makes full use of the load-bearing characteristics of the material. The vertical section bears the weight load of the target plate, the horizontal section forms a cantilever beam load-bearing structure, the arc transition structure eliminates stress concentration and improves the overall strength, the flange structure enhances the connection strength with the main rotating shaft, the reasonable size configuration ensures the load-bearing capacity while achieving structural lightweighting, and the geometric characteristics of the L-shaped structure enable the target plate to perform side rotation movement within a larger radius of action.

[0012] Furthermore, the target plate fixing frame is a U-shaped steel frame structure, with the opening of the U-shaped frame facing the direction of the side rotation support arm; the two side walls of the target plate fixing frame are respectively connected to the two sides of the free end of the horizontal section of the side rotation support arm through hinge shafts; the hinge shaft is a stainless steel round shaft with a diameter of 20 mm to 30 mm, and the hinge shaft passes through the transverse through hole of the free end of the horizontal section of the side rotation support arm.

[0013] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the U-shaped steel frame structure of the target plate fixing frame provides good target plate installation and positioning functions; the design of the opening facing the side rotation support arm facilitates the installation and disassembly of the target plate; the double hinge structure connecting the two side walls to the support arm respectively ensures the reliability and stability of the connection; the stainless steel hinge shaft has good corrosion resistance and wear resistance; the reasonable shaft diameter design ensures load-bearing capacity while realizing flexible swing function; and the hinge connection method allows the target plate to adapt to shooting requirements at different angles.

[0014] Furthermore, the locking mechanism includes a locking pin and a locking hole. The locking pin is an L-shaped steel rod. The short arm of the locking pin is connected to the edge of the base via a hinge, and the long arm can be inserted into the locking hole opened on the main rotating shaft. The locking holes are evenly distributed along the circumference of the main rotating shaft, and the number of locking holes is 8 to 12. The diameter of each locking hole is 15 mm to 20 mm. When the locking pin is inserted into the locking hole, it is used to fix the rotational position of the main rotating shaft.

[0015] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the locking mechanism achieves precise positioning of the main rotating shaft through the cooperation of L-shaped locking pin and circumferentially distributed locking holes. The L-shaped locking pin is easy to operate and reliable in locking. The short arm hinge connection ensures that the locking pin will not be lost. The long arm is inserted into the locking hole to achieve reliable locking. The even distribution of 8 to 12 locking holes provides multiple precise positioning angle selections. The reasonable design of the locking hole diameter ensures smooth insertion and reliable locking of the locking pin. The entire locking mechanism is easy to operate, reliable in locking, and precise in positioning.

[0016] Furthermore, the upper surface of the horizontal section of the side-turning support arm is provided with multiple reinforcing ribs, which are spaced apart along the length of the horizontal section.

[0017] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the multiple reinforcing ribs set on the upper surface of the horizontal section of the side-turn support arm significantly improve the bending strength and stiffness of the cantilever beam. The spacing of the reinforcing ribs along the length direction forms a uniform strength distribution, which effectively prevents deflection deformation under the weight of the target plate, improves the load-bearing capacity and service stability of the entire support structure, and the setting of the reinforcing ribs maintains reasonable weight control while enhancing the structural strength.

[0018] Furthermore, the upper surface of the base plate is provided with a cross-shaped protrusion structure, and the intersection center of the cross-shaped protrusion structure is concentric with the circular through hole.

[0019] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the cross-shaped protrusion structure on the upper surface of the base plate and the concentric arrangement of the circular through hole form an effective stress dispersion mechanism. The cross-shaped protrusion evenly distributes the load transmitted by the shaft to the four directions of the base plate, which significantly improves the local bearing capacity of the base plate and reduces the stress concentration phenomenon around the through hole. The cross-shaped protrusion structure also plays a positioning and guiding role, ensuring the accuracy and stability of the shaft assembly installation.

[0020] Furthermore, the outer surface of the main shaft is provided with a helical groove along the axial direction, and the pitch of the helical groove is 50 mm to 80 mm.

[0021] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the spiral groove design on the outer surface of the main shaft creates an effective channel for lubricating oil storage and distribution. The spiral groove forms a spiral pumping effect during the rotation of the shaft, promoting the circulation of lubricating oil and ensuring sufficient lubrication of the bearing contact surface. The reasonable pitch design ensures the continuity and uniformity of the lubrication effect. The spiral groove also has a certain weight reduction effect, reducing the weight of the shaft while ensuring strength.

[0022] Furthermore, the number of reinforcing ribs is at least three, and the multiple reinforcing ribs are equidistantly distributed on the horizontal section of the side-rotation support arm.

[0023] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the equidistant distribution of at least three reinforcing ribs on the horizontal section of the side-turn support arm creates a uniform strength enhancement effect. The equidistant distribution ensures that the load-bearing capacity of each section of the cantilever beam is basically consistent, avoiding the occurrence of local weak links. The synergistic effect of multiple reinforcing ribs significantly improves the bending stiffness and load-bearing capacity of the entire support arm. The equidistant geometric layout also facilitates processing, manufacturing and quality control, improving the consistency and reliability of the product.

[0024] Compared with existing technologies, the beneficial effects of the side-turning support structure for an automatic target machine provided by this utility model are as follows: This utility model establishes a complete and efficient side-turning support system for an automatic target machine through the organic combination of a base, a rotating shaft assembly, a side-turning support arm, a target plate fixing frame, a rotation control mechanism, and a locking mechanism. The base adopts a combination structure of a base plate and support legs. The base plate provides a solid installation foundation, the triangular truss support legs ensure overall stability, and the adjustable feet adapt to various ground conditions. The rotating shaft assembly uses a seamless steel pipe main shaft with precision bearing seats to achieve high-precision rotational movement, and the integrated gear design simplifies the transmission structure. The L-shaped cantilever beam design of the side-turning support arm fully utilizes the mechanical properties of the material, and the reinforced ribs further enhance the load-bearing capacity. The U-shaped frame structure of the target plate fixing frame, combined with double hinge connections, enables flexible adjustment of the target plate. The rotation control mechanism provides precise angle control through gear transmission, and the operation is simple and intuitive. The locking mechanism uses an L-shaped locking pin and multi-point locking holes to achieve fast and reliable position fixing. The entire system has achieved significant improvements in load-bearing capacity, positioning accuracy, ease of operation, and stability, providing a solid technical guarantee for the reliable operation of the automatic target machine. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the side-rotation support structure of an automatic target machine; Figure 2 This is a schematic diagram of the internal structure of a side-rotation support structure for an automatic target machine; Figure 3 This is a schematic diagram of the slewing control mechanism; The attached diagram lists the components represented by each number as follows: 10. Base; 20. Rotating shaft assembly; 30. Side rotation support arm; 40. Target plate fixing frame; 50. Rotation control mechanism; 60. Locking mechanism. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0028] like Figure 1-3The diagram shows a side-turn support structure for an automatic target machine provided by this utility model. The structure includes: a base 10, a rotating shaft assembly 20, a side-turn support arm 30, a target plate fixing frame 40, a rotation control mechanism 50, and a locking mechanism 60. The base is a rectangular steel structure with a circular through-hole at its geometric center, the diameter of which is 80 mm to 120 mm. The rotating shaft assembly includes a main rotating shaft and a bearing housing. The main rotating shaft is a hollow steel tube structure, passing through the circular through-hole of the base and rotatably connected to the base via the bearing housing. The bearing housing uses ball bearings. The bearing structure is fixedly installed inside the base; the side rotation support arm is an L-shaped steel curved structure, the vertical section of the side rotation support arm is fixedly connected to the upper end face of the main rotating shaft by bolts, and the horizontal section of the side rotation support arm extends outward to form a cantilever beam structure; the target plate fixing frame is installed at the free end of the horizontal section of the side rotation support arm, and the target plate fixing frame is connected to the side rotation support arm through a hinge shaft to support the target plate to swing around the horizontal axis; the rotation control mechanism includes a drive gear and a driven gear, the drive gear is fixed at the lower end of the main rotating shaft, the driven gear meshes with the drive gear and the motor drives the main rotating shaft to rotate.

[0029] In the above technical solution, the base includes a base plate and support legs. The base plate is made of 10 mm thick steel plate, and support legs are welded to the four corners of the base plate. Each support leg is a triangular steel pipe truss structure, and the bottom of the support leg is equipped with an adjusting pad for adjusting the overall level. The bearing seat is fixed to the geometric center position below the base plate by bolts.

[0030] Furthermore, in the above technical solution, the main rotating shaft is made of seamless steel pipe, with an outer diameter of 60 mm to 80 mm and a wall thickness of 8 mm to 12 mm; the upper end face of the main rotating shaft has 4 evenly distributed threaded holes with a diameter of 12 mm, which are used for bolt connection with the side rotating support arm; the lower end outer circumferential surface of the main rotating shaft is machined with a gear tooth structure with 40 to 60 teeth and a module of 3 to 5.

[0031] Furthermore, in the above technical solution, the vertical section of the side-turn support arm has a height of 200 mm to 300 mm and a horizontal section length of 800 mm to 1200 mm; the connection between the vertical section and the horizontal section adopts an arc transition structure with an arc radius of 30 mm to 50 mm; the bottom end face of the vertical section is provided with a through hole corresponding to the threaded hole on the upper end face of the main shaft, and a flange structure is provided around the through hole to enhance the connection strength.

[0032] Furthermore, in the above technical solution, the target plate fixing frame is a U-shaped steel frame structure, with the opening of the U-shaped frame facing the direction of the side rotation support arm; the two side walls of the target plate fixing frame are respectively connected to the two sides of the free end of the horizontal section of the side rotation support arm through hinge shafts; the hinge shaft is a stainless steel round shaft with a diameter of 20 mm to 30 mm, and the hinge shaft passes through the transverse through hole of the free end of the horizontal section of the side rotation support arm.

[0033] Furthermore, in the above technical solution, the locking mechanism includes a locking pin and a locking hole. The locking pin is an L-shaped steel rod. The short arm of the locking pin is connected to the edge of the base through a hinge, and the long arm can be inserted into the locking hole opened on the main rotating shaft. The locking holes are evenly distributed along the circumference of the main rotating shaft, and the number of locking holes is 8 to 12. The diameter of each locking hole is 15 mm to 20 mm. When the locking pin is inserted into the locking hole, it is used to fix the rotational position of the main rotating shaft.

[0034] Furthermore, in the above technical solution, the upper surface of the horizontal section of the side-turn support arm is provided with multiple reinforcing ribs, which are spaced apart along the length of the horizontal section.

[0035] Furthermore, in the above technical solution, the upper surface of the base plate is provided with a cross-shaped protrusion structure, and the intersection center of the cross-shaped protrusion structure is concentrically set with the circular through hole.

[0036] Furthermore, in the above technical solution, the outer surface of the main rotating shaft is provided with a spiral groove along the axial direction, and the pitch of the spiral groove is 50 mm to 80 mm.

[0037] Furthermore, in the above technical solution, the number of reinforcing ribs is at least three, and the multiple reinforcing ribs are equidistantly distributed on the horizontal section of the side-turn support arm.

[0038] The following is a specific embodiment 1 of this utility model: In this embodiment, the base is made of Q235 steel plate, with a base plate size of 1200 mm × 1200 mm × 10 mm. A circular through hole with a diameter of 100 mm is opened at the geometric center of the base plate, and the perimeter of the through hole is chamfered to prevent stress concentration. The four support legs are made of 40 mm × 40 mm × 4 mm square steel tubes welded to form an isosceles triangular truss structure with a height of 800 mm and a base length of 600 mm. The vertices of the triangles are welded to the corners of the base plate. Each support leg is fitted with an M20 × 100 mm adjusting bolt as an adjusting pad, with an adjustment range of 50 mm. The bearing seat is made of cast steel and houses an SKF6020 deep groove ball bearing. The bearing seat is fixed to the bottom of the base plate with four M16 bolts. The main shaft is made of seamless 45# steel tubing, with an outer diameter of 70 mm, an inner diameter of 50 mm, and a length of 400 mm. Four M12 threaded holes are evenly distributed on the upper surface of a 60 mm diameter circumference. A 50-tooth involute spur gear with a module of 4 and a pitch circle diameter of 200 mm is machined onto the lower outer circumference of the main shaft. The side rotation support arm is welded from 16Mn steel plate. The vertical section is 250 mm high and made of 12 mm thick steel plate, while the horizontal section is 1000 mm long and made of 10 mm thick steel plate. The connection between the two sections uses a transition structure with a 40 mm radius arc. A 200 mm diameter, 15 mm thick flange is installed at the bottom of the vertical section, with four φ13 mm through holes corresponding to the main shaft. Five reinforcing ribs, each 150 mm × 80 mm × 8 mm in size, are welded to the upper surface of the horizontal section and are evenly spaced. The target plate holder is constructed from a U-shaped structure made of 40mm × 60mm × 5mm rectangular steel tubing, with overall dimensions of 600mm × 400mm × 300mm. Two φ25mm shaft holes are formed on each side wall. The hinge shaft is made of 40Cr steel, with a diameter of 25mm and a length of 100mm, and is chrome-plated. The driven gear of the rotation control mechanism is made of 45# steel, with 25 teeth and a module of 4, and is fixed to a 500mm long operating handle via a key. The locking pin of the locking mechanism is made of 40Cr steel, with an L-shaped structure and a total length of 300mm, a short arm length of 80mm, a long arm length of 220mm, and a diameter of 18mm. Ten φ20mm locking holes are evenly spaced around the circumference of the main shaft, with an angle interval of 36 degrees. A cross-shaped reinforcing rib is welded to the upper surface of the base plate; the rib plate is 8mm thick and 20mm high, and each of the four arms is 400mm long. The outer surface of the main shaft is machined with a helical groove with a pitch of 60 mm, a groove width of 5 mm, and a groove depth of 2 mm. After assembly, the target plate can bear a maximum weight of 100 kg, has a lateral rotation angle range of 360 degrees, an angle positioning accuracy of ±1 degree, and an operating torque of less than 30 Nm. The overall system weight is 380 kg, occupies an area of ​​1.44 square meters, and is suitable for installation and use in various shooting ranges.

[0039] The following is another specific embodiment 2 of this utility model: This embodiment 2 is an enhanced improvement based on embodiment 1, specifically designed for the use of heavy-duty target plates. The thickness of the base plate is increased to 15 mm, the size is enlarged to 1500 mm × 1500 mm, and the diameter of the central through hole in the base plate is increased to 120 mm. The support leg frame is made of 50 mm × 50 mm × 5 mm square steel tubing, the height of the triangle is increased to 1000 mm, and the length of the base side is increased to 800 mm, improving overall stability. The bearing housing is upgraded to an SKF6024 heavy-duty bearing, significantly improving load-bearing capacity. The outer diameter of the main shaft is increased to 80 mm, the wall thickness is increased to 12 mm, the number of teeth on the lower gear is increased to 60, and the module remains unchanged at 4. The vertical section of the side-rotation support arm uses a 15 mm thick steel plate, the horizontal section length is extended to 1200 mm, the thickness is increased to 12 mm, the flange diameter is increased to 250 mm, and the thickness is increased to 20 mm. The number of reinforcing ribs has been increased to 7, and their dimensions have been adjusted to 200 mm × 100 mm × 10 mm. The target plate mounting bracket is made of 50 mm × 80 mm × 6 mm rectangular steel tubing, with the overall dimensions increased to 800 mm × 500 mm × 400 mm. The hinge shaft diameter has been increased to 30 mm, and the length to 120 mm. The locking pin diameter has been increased to 20 mm, and the main shaft locking hole diameter has been correspondingly increased to 22 mm. The improved system's maximum load capacity has been increased to 150 kg, and the overall weight has increased to 520 kg, making it suitable for supporting large, heavy-duty target plates and maintaining excellent stability and reliability even in harsh environments.

[0040] The following is another specific embodiment 3 of this utility model: Embodiment 3 is a lightweight improvement based on Embodiment 1, specifically designed for mobile applications. The base is made of high-strength aluminum alloy, with the base plate dimensions adjusted to 1000 mm × 1000 mm × 8 mm, resulting in a 60% weight reduction. The support legs are made of aluminum alloy profiles with a cross-sectional dimension of 40 mm × 40 mm and a wall thickness of 3 mm. The triangular structure remains unchanged, but the weight is significantly reduced. The main rotating shaft is made of high-strength aluminum alloy, maintaining an outer diameter of 70 mm while reducing the wall thickness to 8 mm, and its strength is improved through heat treatment. The side-rotation support arm uses a hybrid structure of carbon fiber composite material and aluminum alloy. The vertical section retains a steel structure to ensure connection strength, while the horizontal section uses carbon fiber tubing with an outer diameter of 80 mm and a wall thickness of 5 mm, resulting in a 70% weight reduction while maintaining sufficient rigidity. The reinforcing ribs are replaced with aluminum alloy, reducing the number to three, but maintaining strength through optimized design. The target plate fixing frame is made of aluminum alloy profiles, resulting in a 50% weight reduction. The system incorporates a quick-assembly and disassembly mechanism, replacing bolt connections with quick-locking mechanisms at key joints, reducing assembly and disassembly time to less than 15 minutes. The entire system weighs only 180 kg and is equipped with a dedicated transport case for rapid deployment and relocation, making it particularly suitable for field training and temporary firing ranges, while maintaining necessary load-bearing capacity and operational accuracy.

[0041] Specifically, the principle of this utility model is as follows: Based on the cantilever beam theory and precision transmission principle in mechanical engineering, this utility model achieves high-performance side-turn support function for an automatic target machine through reasonable structural design. The base adopts a combination structure of a base plate and support legs. The base plate, as the main load-bearing element, bears all the loads of the upper structure, while the triangular truss support legs effectively transfer the load to the ground, forming a stable three-point support system. The main shaft in the rotating shaft assembly adopts a hollow seamless steel tube design, achieving lightweight while ensuring load-bearing capacity. The bearing seat uses high-precision ball bearings to ensure rotational accuracy and stability. The L-shaped structure of the side-turn support arm fully utilizes the principles of material mechanics. The vertical section bears the axial load, while the horizontal section forms a cantilever beam load-bearing structure. The arc transition eliminates stress concentration, and the reinforcing ribs are set according to the bending moment distribution law to achieve the optimal strength-to-weight ratio. The rotation control mechanism adopts the gear transmission principle. Through reasonable gear ratio design, torque amplification and precise control are achieved. The integrated gear design reduces transmission chain links and improves transmission accuracy. The locking mechanism is based on the principle of mechanical locking. The L-shaped locking pin and the circumferentially distributed locking holes achieve fast and reliable position fixing, and the multi-point locking hole design provides multiple precise positioning options. Through the coordinated cooperation of its components, the entire system achieves reasonable load distribution, precise motion control, and reliable position locking, fundamentally solving the technical problems of insufficient load-bearing capacity, poor positioning accuracy, complex operation, and poor stability in existing technologies.

[0042] Before use, first install the base in the predetermined position. Adjust the adjusting pads at the bottom of each support leg to ensure the entire base is level, and use a level to check the installation accuracy. Pass the main shaft of the rotating shaft assembly through the circular through hole in the center of the base, and fix the bearing seat below the base to ensure smooth rotation of the shaft. Connect the vertical section of the side-rotation support arm to the upper end face of the main shaft with bolts, and tighten the bolts to the specified torque value using a torque wrench to ensure a secure and reliable connection. Install the target plate mounting bracket on the free end of the horizontal section of the side-rotation support arm, and adjust the pitch angle of the target plate via a hinge shaft. Install the target plate on the mounting bracket according to training needs, and adjust the hinge angle to achieve the required posture. When adjusting the angle, first pull out the locking pin of the locking mechanism, hold the handle of the rotation control mechanism and slowly rotate it, observing the angle indicator to determine the rotation angle. After reaching the predetermined position, insert the locking pin into the corresponding locking hole to complete the position fixation. During firing, regularly check the tightness of each connection part and replenish bearing lubricating grease in a timely manner to ensure normal system operation. After use, clean all moving parts, apply anti-rust grease to the bearings, adjust the system to the standard position and lock it for easy use next time.

Claims

1. A side-rotation support structure for an automatic target machine, characterized in that, include: The system comprises a base, a rotating shaft assembly, a side-rotation support arm, a target plate fixing frame, a rotation control mechanism, and a locking mechanism. The base is a rectangular steel structure with a circular through-hole at its geometric center, the diameter of which is 80 mm to 120 mm. The rotating shaft assembly includes a main rotating shaft and a bearing housing. The main rotating shaft is a hollow steel tube structure, passing through the circular through-hole of the base and rotatably connected to it via the bearing housing. The bearing housing is fixedly installed inside the base using a ball bearing structure. The side-rotation support arm is an L-shaped bent steel structure. The vertical section of the side-rotation support arm is bolted to the upper end face of the main rotating shaft, and the horizontal section extends outward to form a cantilever beam structure. The target plate... The fixing frame is installed at the free end of the horizontal section of the side-rotation support arm. The target plate fixing frame is connected to the side-rotation support arm via a hinge shaft to support the target plate to swing around the horizontal axis. The rotation control mechanism includes a drive gear and a driven gear. The drive gear is fixed at the lower end of the main rotating shaft, and the driven gear meshes with the drive gear and drives the main rotating shaft to rotate via a motor. The base includes a base plate and support legs. The base plate is made of 10 mm thick steel plate, and support legs are welded to the four corners of the base plate. Each support leg is a triangular steel pipe truss structure, and the bottom of the support leg is provided with an adjusting foot pad to adjust the overall levelness. The bearing seat is fixed to the geometric center position below the base plate by bolts.

2. The side-turning support structure of an automatic target machine according to claim 1, characterized in that, The main shaft is made of seamless steel pipe with an outer diameter of 60 mm to 80 mm and a wall thickness of 8 mm to 12 mm. The upper end face of the main shaft has four evenly distributed threaded holes with a diameter of 12 mm, which are used for bolt connection with the side rotation support arm. The lower end outer circumference of the main shaft is machined with a gear tooth structure with 40 to 60 teeth and a module of 3 to 5.

3. The side-turning support structure of an automatic target machine according to claim 2, characterized in that, The vertical section of the side-turn support arm has a height of 200 mm to 300 mm and a horizontal section length of 800 mm to 1200 mm. The connection between the vertical section and the horizontal section adopts an arc transition structure with an arc radius of 30 mm to 50 mm. The bottom end face of the vertical section is provided with a through hole corresponding to the threaded hole on the upper end face of the main shaft, and a flange structure is provided around the through hole to enhance the connection strength.

4. The side-rotation support structure of an automatic target machine according to claim 3, characterized in that, The target plate fixing frame is a U-shaped steel frame structure, with the opening of the U-shaped frame facing the direction of the side rotation support arm; the two side walls of the target plate fixing frame are respectively connected to the two sides of the free end of the horizontal section of the side rotation support arm through hinge shafts; the hinge shaft is a stainless steel round shaft with a diameter of 20 mm to 30 mm, and the hinge shaft passes through the transverse through hole of the free end of the horizontal section of the side rotation support arm.

5. The side-rotation support structure of an automatic target machine according to claim 4, characterized in that, The locking mechanism includes a locking pin and a locking hole. The locking pin is an L-shaped steel rod. The short arm of the locking pin is connected to the edge of the base through a hinge, and the long arm can be inserted into the locking hole opened on the main rotating shaft. The locking holes are evenly distributed along the circumference of the main rotating shaft, and the number of locking holes is 8 to 12. The diameter of each locking hole is 15 mm to 20 mm. When the locking pin is inserted into the locking hole, it is used to fix the rotational position of the main rotating shaft.

6. The side-rotation support structure of an automatic target machine according to claim 5, characterized in that, The upper surface of the horizontal section of the side-turning support arm is provided with multiple reinforcing ribs, which are spaced apart along the length of the horizontal section.

7. The side-rotation support structure of an automatic target machine according to claim 6, characterized in that, The base plate has a cross-shaped protrusion structure on its upper surface, and the center of the cross-shaped protrusion structure is concentric with the circular through hole.

8. The side-rotation support structure of an automatic target machine according to claim 7, characterized in that, The outer surface of the main shaft is provided with a spiral groove along the axial direction, and the pitch of the spiral groove is 50 mm to 80 mm.

9. The side-turning support structure of an automatic target machine according to claim 8, characterized in that, The number of reinforcing ribs is at least three, and the multiple reinforcing ribs are equidistantly distributed on the horizontal section of the side-rotation support arm.

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