An electric driven monorail crane

Abstract

The invention discloses an electric-driven monorail crane, which belongs to the technical field of monorail cranes and comprises a main beam, a tensile cable and a cable return trolley adjusting device; a cable return trolley, a towing cable trolley and a power trolley are hung on the main beam; independently rotatable cable guide wheels are respectively installed on the cable return trolley and the towing cable trolley; one end of the tensile cable is connected to a power switch, and the other end is reciprocatedly wound through the cable guide wheels on the cable return trolley and the towing cable trolley, and connected to the power trolley, so as to realize direct power supply to the power trolley; the power trolley powered by the tensile cable moves on the main beam, and drives the towing cable trolley to move synchronously, and the distance between the cable return trolley and the towing cable trolley is synchronously adjusted through the cable return trolley adjusting device, so as to realize that the tensile cable is always in a straightened state, ensure reliable and stable power supply to the power trolley, effectively solve the problem of underground pollution of internal combustion engine locomotives, and solve the problems of short endurance and frequent charging of battery locomotives.

Description

Technical Field

[0001] The invention belongs to the technical field of monorail cranes, in particular to an electric-driven monorail crane. Background Art

[0002] A monorail crane is a transport device that runs on a suspended monorail and consists of a drive vehicle or a traction vehicle (wire rope traction monorail crane), a brake vehicle, a load-bearing vehicle, etc. At present, monorail crane technology is mainly used for auxiliary transportation in coal mines, for transporting materials, personnel and equipment, etc. It is one of the three major auxiliary transportation equipment in coal mines. It can achieve continuous direct transportation without relocation in tunnels with multiple ups and downs, left and right turns, straight forks, and multiple branch lines, and is increasingly widely used in coal mines.

[0003] At present, the most widely used monorail cranes in coal mines are explosion-proof diesel engine monorail cranes and battery monorail cranes. The explosion-proof diesel engine monorail cranes are powered by internal combustion engines, but they have problems such as insufficient fuel and high air pollution underground. Battery monorail cranes solve the air pollution problem, but their endurance is low and they cannot operate continuously underground in coal mines. Both types of monorail cranes are driven by friction wheels, which have high consumption and low climbing ability. Summary of the invention

[0004] To solve the above problems, the present invention provides an electric-driven monorail crane, which directly supplies power to the power trolley through a tensile cable, which can effectively solve the problem of underground pollution of internal combustion locomotives and the problem of short battery life and frequent charging of battery locomotives.

[0005] The present invention is achieved through the following technical solutions:

[0006] An electric-driven monorail crane comprises a main beam, a tension cable and a cable return trolley adjustment device;

[0007] The main beam is equipped with a cable return trolley, a cable towing trolley and a power trolley that can move along its length direction;

[0008] The cable return trolley and the cable towing trolley are respectively equipped with a number of independently rotatable cable guide wheels;

[0009] One end of the tension cable is connected to the power switch fixed in the tunnel, and the other end is reciprocatedly wound through the cable guide wheel on the cable return trolley and the cable guide wheel on the towing trolley, and connected to the power trolley;

[0010] The cable return trolley adjustment device is connected to the cable return trolley and can adjust the moving position of the cable return trolley so that the tensile cable is always in a straightened state.

[0011] A further improvement of the present invention is that the cable return trolley comprises a cable return trolley frame, on which a plurality of independently rotatable first guide wheels are mounted via a first mounting shaft, and a plurality of independently rotatable second guide wheels are mounted via a second mounting shaft; the cable towing trolley comprises a cable towing trolley frame, on which a plurality of independently rotatable fourth guide wheels are mounted via a fourth mounting shaft, and a plurality of independently rotatable fifth guide wheels are mounted via a fifth mounting shaft; the second guide wheel and the fifth guide wheel are arranged on the relatively inner sides of the first guide wheel and the fourth guide wheel, and the winding diameter of the second guide wheel is smaller than the winding diameter of the first guide wheel, and the winding diameter of the fifth guide wheel is smaller than the winding diameter of the fourth guide wheel.

[0012] A further improvement of the present invention is that a third guide wheel is rotatably mounted on the cable return trolley frame via a third mounting shaft.

[0013] A further improvement of the present invention is that a cable supporting trolley arranged between the cable return trolley and the towing cable trolley is hung on the main beam; the cable supporting trolley includes a cable supporting trolley frame, and the cable supporting trolley frame is equipped with a plurality of independently rotatable support wheels through a sixth mounting shaft, and the support wheels are used for rolling support of the tension cable.

[0014] A further improvement of the present invention is that the power trolley includes a bracket body; a transmission rack is connected to the lower side of the main beam along its length direction; a driving device and a rotating shaft that is transmission-connected to the output shaft of the driving device are installed on the bracket body; a rotating disk is mounted on the rotating shaft; a plurality of cylindrical pins that can rollingly engage with the teeth of the transmission rack are arranged in an annular array on the circumference of the rotating disk, and a sleeve is mounted on the cylindrical pins.

[0015] A further improvement of the present invention is that the main beam is an I-beam structure; rollers that can be engaged with two sides of the I-beam main beam are rotatably mounted on the bracket body.

[0016] A further improvement of the present invention is that two adjacent transmission racks are connected and installed via a connecting plate; and the connecting ends of the two adjacent transmission racks are respectively provided with a positioning block and a positioning groove engaged with the positioning block.

[0017] A further improvement of the present invention is that the cable return trolley adjusting device includes a winch; a steel wire rope connected to the cable return trolley is wound around the winch; and a tensioning device capable of tensioning the steel wire rope is provided on a side of the winch close to the cable return trolley.

[0018] A further improvement of the present invention is that the cable return trolley adjusting device is in the form of a power trolley structure, and the cable return trolley is mounted on the main beam through the cable return trolley adjusting device.

[0019] A further improvement of the present invention further comprises a cable rack installed along the main beam direction, on which a plurality of rotating wheels capable of supporting rolling guides for the tensile cables are installed.

[0020] It can be seen from the above technical solutions that the beneficial effects of the present invention are:

[0021] The overall structure is simple, easy to implement and practical; the tensile cable is reciprocated by the cable guide wheel on the cable return trolley and the cable guide wheel on the towing cable trolley, and the two ends of the extended tensile cable are respectively connected to the power switch and the power trolley, thereby realizing direct power supply to the power trolley; the power trolley powered by the tensile cable moves on the main beam, and drives the towing cable trolley to move synchronously, and the distance between the cable return trolley and the towing cable trolley is synchronously adjusted through the cable return trolley adjustment device, thereby realizing that the tensile cable is always in a straightened state, ensuring reliable and stable power supply to the power trolley, effectively solving the problem of underground pollution of internal combustion locomotives, and solving the problems of short endurance and frequent charging of battery locomotives. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the arrangement of a specific embodiment of the present invention.

[0024] Figure 2 It is a schematic diagram of the arrangement of a cable return trolley, a cable supporting trolley and a towing cable trolley according to a specific embodiment of the present invention.

[0025] Figure 3 It is a top view schematic diagram of the arrangement of the cable return trolley, the cable supporting trolley and the towing cable trolley according to a specific embodiment of the present invention.

[0026] Figure 4 The figure is a schematic structural diagram of a cable-supporting trolley according to a specific embodiment of the present invention.

[0027] Figure 5 It is a top view schematic diagram of a cable-carrying trolley according to a specific embodiment of the present invention.

[0028] Figure 6 It is a structural schematic diagram of Example 1 of the cable return trolley adjustment device according to a specific embodiment of the present invention.

[0029] Figure 7 It is a schematic diagram of the cross-sectional structure of a tensile cable according to a specific embodiment of the present invention.

[0030] Figure 8 It is a schematic diagram of the power trolley and main beam mounting according to a specific implementation manner of the present invention.

[0031] Fig. 9 for Figure 8 Schematic diagram of the cross-sectional structure.

[0032] Fig.10 for Figure 8 Schematic diagram of the top view structure.

[0033] Fig.11 It is a schematic diagram of the track installation structure of a specific implementation mode of the present invention.

[0034] Fig.12 It is a schematic diagram of the track cross-section structure of a specific implementation mode of the present invention.

[0035] Fig.13 for Fig.11 Schematic diagram of the partially enlarged structure of part A in the middle.

[0036] Fig.14 It is an exploded schematic diagram of the track docking position of a specific embodiment of the present invention.

[0037] Fig.15 It is a top view schematic diagram of a cable rack according to a specific embodiment of the present invention.

[0038] In the attached drawings: 100, main beam, 101, transmission rack, 102, lifting ear, 103, lifting hole, 104, lifting shaft, 105, connecting plate, 106, positioning block, 107, positioning groove, 108, first mounting hole, 109, second mounting hole, 110, connecting bolt, 200, bracket body, 201, traction seat, 202, driving device, 203, rotating shaft, 204, rotating disk, 205, bearing, 206, support plate, 207, cylindrical pin, 208, sleeve, 209, roller, 300, winch, 400, tensioning device, 500, wire rope, 600, tensile cable, 601, conductive core, 602, conductive core wrapping layer, 603, Steel wire, 604, cable protective layer, 605, power switch, 606, cable rack, 607, rotating wheel, 700, cable return trolley, 701, cable return trolley frame, 702, first mounting axis, 703, first guide wheel, 704, second mounting axis, 705, second guide wheel, 706, third mounting axis, 707, third guide wheel, 800, towing cable trolley, 801, towing cable trolley frame, 802, fourth mounting axis, 803, fourth guide wheel, 804, fifth mounting axis, 805, fifth guide wheel, 900, cable supporting trolley, 901, cable supporting trolley frame, 902, sixth mounting axis, 903, supporting wheel, 1000, power trolley, 1100, driven trolley. DETAILED DESCRIPTION

[0039] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0040] like Figure 1-4 As shown, the present invention discloses an electric-driven monorail crane, comprising a main beam 100, a tensile cable 600 and a cable return trolley adjusting device; a cable return trolley 700, a towing cable trolley 800 and a power trolley 1000 which can move along the length direction thereof are mounted on the main beam 100; a plurality of independently rotatable cable guide wheels are respectively mounted on the cable return trolley 700 and the towing cable trolley 800; one end of the tensile cable 600 is connected to a power switch 605 fixed in the lane, and the other end is reciprocatedly wound through the cable guide wheels on the cable return trolley 700 and the cable guide wheels on the towing cable trolley 800, and is connected to the power trolley 1000; the cable return trolley adjusting device is connected to the cable return trolley 700, and can adjust the moving position of the cable return trolley 700, so that the tensile cable 600 is always in a straightened state.

[0041] The coal mine tunnel has a certain inclination angle, and the main beam 100 is arranged along the tunnel; the power switch 605 can be fixedly installed in the middle of the tunnel according to the tunnel length and the running stroke of the towing cable trolley 800; the cable return trolley 700 is on the upper part of the towing cable trolley 800, and the tensile cable 600 is reciprocated through the cable guide wheel on the cable return trolley 700 and the cable guide wheel on the towing cable trolley 800, and the two ends of the tensile cable 600 are respectively connected to the power switch 605 and the power trolley 1000, thereby realizing direct power supply to the power trolley 1000. The power trolley 1000 powered by the tensile cable 600 moves on the main beam 100 and drives the towing cable trolley 800 to move synchronously. The distance between the return cable trolley 700 and the towing cable trolley 800 is synchronously adjusted through the return cable trolley adjustment device, so that the tensile cable 600 is always in a straightened state, ensuring reliable and stable power supply to the power trolley 1000, effectively solving the problem of underground pollution of internal combustion locomotives, and solving the problems of short endurance and frequent charging of battery locomotives; the overall structure is simple, easy to implement, and practical.

[0042] like Figure 1-3As shown, the cable return trolley 700 includes a cable return trolley frame 701, on which three independently rotatable first guide wheels 703 are rotatably mounted via a horizontal first mounting shaft 702, and four independently rotatable second guide wheels 705 are rotatably mounted via a horizontal second mounting shaft 704; the towing cable trolley 800 includes a towing cable trolley frame 801, on which four independently rotatable fourth guide wheels 803 are rotatably mounted via a horizontal fourth mounting shaft 802, and four independently rotatable fifth guide wheels 805 are rotatably mounted via a horizontal fifth mounting shaft 804; the second guide wheel 705 and the fifth guide wheel 805 are arranged on the opposite inner sides of the first guide wheel 703 and the fourth guide wheel 803, and the winding diameter of the second guide wheel 705 is smaller than the winding diameter of the first guide wheel 703, and the winding diameter of the fifth guide wheel 805 is smaller than the winding diameter of the fourth guide wheel 803. A third guide wheel 707 is also rotatably mounted on one side of the cable return trolley frame 701 through a third horizontal mounting shaft 706. The diameter of the third guide wheel 707 is equal to that of the first guide wheel 703 and the fourth guide wheel 803. The tensile cable 600 starts from the power switch 605 and goes forward (i.e. upward) along the lane and is wound around the third guide wheel 707 from bottom to top, and goes backward (i.e. downward) and is wound around the first fifth guide wheel 805 ( Figure 3 The uppermost side), goes forward to the first second guide wheel 705 ( Figure 3 The uppermost side), and reciprocatingly winds around the fifth guide wheel 805 and the second guide wheel 705, from the last second guide wheel 705 ( Figure 3 The lowermost side) goes back around to the first fourth guide wheel 803 ( Figure 3 The bottom side), forward around the first first guide wheel 703 ( Figure 3 The fourth guide wheel 803 and the first guide wheel 703 are wound back and forth, from the last fourth guide wheel 803 ( Figure 3 The uppermost side) is guided backward and connected to the power trolley 1000 to realize direct power supply to the power trolley 1000. The tensile cable 600 is wound multiple times on the third guide wheel 707, the fifth guide wheel 805, the second guide wheel 705, the fourth guide wheel 803 and the first guide wheel 703. The distance between the return cable trolley 700 and the towing cable trolley 800 is slightly adjusted by the return cable trolley adjustment device, so that the tensile cable 600 can be followed and straightened all the time, ensuring the reliability of power supply to the power trolley 1000. Multiple turns of the tensile cable 600 can be realized by two sets of large-diameter guide wheels on the outside and two sets of small-diameter guide wheels on the inside.

[0043] like Figure 1-5As shown, a cable-supporting trolley 900 disposed between the cable-returning trolley 700 and the cable-hauling trolley 800 is also mounted on the main beam 100 through a driven trolley 1100; the cable-supporting trolley 900 includes a cable-supporting trolley frame 901, and a plurality of independently rotatable support wheels 903 are mounted on the cable-supporting trolley frame 901 through four sixth mounting shafts 902, and the support wheels 903 are used to provide rolling support for the tension cable 600. The four sixth mounting shafts 902 are distributed in a rectangular shape at the four corners in the side view direction, and the upper and lower layers of the support wheels 903 (two groups each) surrounding the tension cable 600 are respectively supported and guided, effectively preventing the tension cable 600 from sagging excessively, and reducing the pulling force applied to the tension cable 600 to ensure that the tension cable 600 is always in a straightened state.

[0044] like Figure 7 As shown, the tensile-resistant cable 600 includes a conductive core 601 formed by a plurality of strands of ultra-fine bare copper wires twisted into bundles, and the conductive core 601 is wrapped with a conductive core wrapping layer 602 of a PUR mixed material on the outside; a plurality of steel wires 603 are arranged around the conductive core 601 to increase the tensile resistance of the tensile-resistant cable 600; the tensile-resistant cable 600 is coated with a cable protective layer 604 of PUR material on the outside, and the cable protective layer 604 and the protective layer 902 move relative to each other (with a small relative friction force), so as to effectively protect the tensile-resistant cable 600.

[0045] like Fig.15 As shown, the cable rack 606 is also installed along the main beam 100 and close to the tunnel wall. The cable rack 606 is equipped with a plurality of rollers 607 that can support and guide the tensile cable 600. The cross section of the cable rack 606 is a semicircular shape with an upper opening, and the rollers 607 are dumbbell-shaped structures with a thin middle and thick ends. The cable rack 606 is arranged below the third guide wheel 707.

[0046] The cable rack 606 supports the tensile cable 600 between the third guide wheel 707 and the power switch 605 to prevent the tensile cable 600 from sagging.

[0047] like Figure 8-10 As shown, the power trolley 1000 includes a bracket body 200; a transmission rack 101 is connected to the lower side of the main beam 100 along its length direction; a driving device 202 and a rotating shaft 203 that is transmission-connected to the output shaft of the driving device 202 are installed on the bracket body 200; a rotating disk 204 is mounted on the rotating shaft 203; a plurality of cylindrical pins 207 that can rollingly engage with the teeth of the transmission rack 101 are arranged in an annular array on the circumference of the rotating disk 204, and a sleeve 208 is mounted on the cylindrical pin 207.

[0048] The driving device 202 is in the form of a motor, which is directly powered by the tensile cable 600 to drive the rotating shaft 203 and the rotating disk 204 to rotate, and the sleeve 208 mounted on the outside of the cylindrical pin 207 is rollingly engaged with the tooth groove on the lower side of the transmission rack 101, so as to realize the flexible movement of the bracket body 200 mounted on the main beam 100 and achieve the purpose of auxiliary transportation; the meshing surface of the transmission rack 101 is a cycloid curve, and the bottom of the tooth groove is an arc surface. The tooth groove of the transmission rack 101 is meshed with the outer ring of the sleeve 208, and the meshing clearance is not less than 0.4mm; it can be suitable for transportation with a large slope (60 degrees), and the relative rotation of the sleeve 208 made of wear-resistant material and the cylindrical pin 207 and the wide tooth pitch of the transmission rack 101 can solve the meshing interference phenomenon caused by the difference between the inner and outer radii when the driving part is running on a horizontal curve; and after the sleeve 208 is worn, it only needs to be replaced separately, which is convenient for maintenance and low cost. The cable-supporting trolley 800 has strong driving force and good adaptability, and is particularly suitable for environments with large angles and multiple turns, greatly improving the efficiency of auxiliary transportation underground in coal mines. The main beam 100 is welded to the transmission rack 101 on its lower side to form a track, and the teeth of the transmission rack 101 can be directly processed by high-precision equipment. The rotating disk 204 and the cylindrical pin 207 installed thereon are convenient to process, easy to form, low in cost, and highly economical to use.

[0049] Among them, the main beam 100 adopts an I-beam structure, and the main beam 100 and the transmission rack 101 are welded to form a "steel"-shaped track. The raw materials are easy to obtain, the molding is easier, and the production is easy. The bracket body 200 is rotatably installed with rollers 209 that can be engaged with the left and right sides of the I-beam main beam 100. Two rollers 209 are set on each side, and the rollers 209 on the left and right sides need to be symmetrically arranged (in pairs). The rollers 209 are embedded in the left and right notches of the I-beam main beam 100, and the rollers 209 are supported by the lower side wing plates of the I-beam main beam 100, so that the bracket body 200 can be reliably hung and flexibly moved along the length direction of the main beam 100.

[0050] like Fig. 9 As shown, the bracket body 200 adopts a U-shaped bent plate structure, and the rollers 209 are installed on the upper ends of the left and right side plates thereof; the driving device 202 (motor) is symmetrically installed on the outer sides of the two side plates of the bracket body 200, and the two ends of the rotating shaft 203 are rotatably installed with the two side plates of the bracket body 200 through bearings 205; the two ends of the rotating shaft 203 are connected to the output shafts of the two driving devices 202; the two driving devices 202 adopt synchronous drive control to achieve stability and balance in driving the rotating shaft 203 and the rotating disk 204, and provide more sufficient power to achieve transportation on a larger slope.

[0051] like Fig. 9As shown in the figure, a number of pairs of oppositely arranged support plates 206 are annularly arrayed on the circumference of the rotating disk 204; the cylindrical pins 207 are inserted into the paired support plates 206; the sleeve 208 is arranged between the two support plates 206. The support plates 206 and the rotating disk 204 are integrally machined, which makes the positioning and installation of the cylindrical pins 207 more stable and reliable, and realizes the convenience of disassembling and assembling the cylindrical pins 207 and replacing the sleeve 208.

[0052] To realize the auxiliary transportation of the power cart 1000, plug-in traction seats 201 are respectively arranged at the front and rear ends of the support body 200, and the convenience and flexibility of connecting with other rail carts (or loads) can be realized through the traction seats 201. Other loads may include front and rear cabs, etc.

[0053] As Figure 11-14 As shown in the figure, adjacent two transmission racks 101 are connected and installed through a connecting plate 105. Positioning blocks 106 and positioning grooves 107 engaged with the positioning blocks 106 are respectively arranged at the connecting ends of the adjacent two transmission racks 101. The positioning block 106 includes a neck connected to the end of the transmission rack 101 and a circular head, and the size of its neck is smaller than the diameter of the head; when the two transmission racks 101 are butted, the positioning block 106 of one transmission rack 101 is clamped in the positioning groove 107 of the other transmission rack 101, and is connected and installed through the connecting plate 105 arranged on both sides of the butting position (second mounting holes 109 are respectively opened at both ends of the connecting plate 105, first mounting holes 108 are respectively opened at the end parts of the two adjacent transmission racks 101, and the connecting bolts 110 pass through the second mounting holes 109 of one side connecting plate 105, the first mounting holes 108 of the transmission rack 101, and the second mounting holes 109 of the other side connecting plate 105 in sequence, and are tightened by screwing nuts), so as to realize the accuracy and reliability of the butt joint installation of the adjacent two transmission racks 101, avoid the tooth grooves at the lower part of the transmission rack 101 from being misaligned, and ensure the accuracy of the rolling engagement of the cylindrical pin 207 and the smoothness of the operation.

[0054] As Figure 13-14 As shown in the figure, half of the symmetric tooth grooves are respectively opened at the end parts of the adjacent two transmission racks 101. After butting, the two half tooth grooves are buckled to form a complete tooth groove, realizing a smooth transition at the butting position of the transmission rack 101 and avoiding jamming of the rolling engagement of the cylindrical pin 207.

[0055] As Figure 12-14 As shown in the figure, lifting lugs 102 are arranged at the left and right positions with a dislocation at the adjacent ends of the two main beams 100; hoisting holes 103 are opened on the two lifting lugs 102 with a dislocation, and a hoisting shaft 104 is inserted and installed; both ends of the hoisting shaft 104 are connected through a U-shaped connecting piece, and the U-shaped connecting piece is hung and connected through a chain hanging on the top of the roadway. The reliable hanging and installation of the track butting position is realized, and the adjacent tracks are avoided from being misaligned.

[0056] A plurality of lifting ears 102 may also be provided at intervals at other positions in the middle of the upper side of the main beam 100 and hung on the top of the tunnel by chains to achieve balanced hanging of the main beam 100 and prevent it from being deformed by being pulled by greater gravity.

[0057] like Fig.13 As shown, a V-shaped gap is formed between two adjacent main beams 100; the lifting holes 103 of the two staggered lifting ears 102 are long holes and are arranged along the length direction of the main beam 100. While ensuring the accuracy and reliability of the docking of adjacent transmission racks 101, the upper part of the main beam 100 has a residual gap, which is convenient for the insertion of the lifting shaft 104 and can avoid excessive stress on the track, thereby ensuring reliability and safety in use.

[0058] In one embodiment, the cable return trolley adjustment device includes a winch 300 disposed at the upper part of the tunnel; a steel wire rope 500 connected to the cable return trolley 700 is wound around the winch 300; a tensioning device 400 capable of tensioning the steel wire rope 500 is provided on the side of the winch 300 close to the cable return trolley 700. By controlling the winch 300 to retract and release the steel wire rope 500, the cable return trolley 700 can be flexibly controlled, thereby ensuring that the tensile cable 600 is always in a straightened state; the steel wire rope 500 is always kept in a tensioned state by the tensioning device 400, ensuring that the distance between the cable return trolley 700 and the towing cable trolley 800 can be accurately controlled and adjusted.

[0059] In another embodiment, the cable return trolley adjustment device is in the form of an electric-driven crane (i.e., the structure of the power trolley 1000), and the cable return trolley 700 is mounted on the main beam 100 through the cable return trolley adjustment device. The cable of the cable return trolley adjustment device is arranged between the cable return trolley 700 and the towing cable trolley 800 through a telescopic device or a winding device, and the motor in the cable return trolley adjustment device is connected to the power trolley 1000 that drives the towing cable trolley 800, thereby realizing flexible and precise control of the cable return trolley 700. Similarly, the cable return trolley adjustment device in this embodiment can also be a hydraulic-powered crane, and it is only necessary to replace the cable between the power trolley 1000 and the cable return trolley adjustment device with a hydraulic oil pipe to realize the hydraulic drive of the cable return trolley adjustment device.

[0060] Among them, the power trolley 1000 is directly powered by the tensile cable 600, and can directly hang the towing cable trolley 800; it can also be hung through the driven trolley 1100 (an ordinary crane, which can only be hung on the main beam 100 through rollers and can slide flexibly along the main beam 100), and then connected to the power trolley 100 through a connecting rod to realize the driving of the towing cable trolley 800.

[0061] The cable supporting trolley 900 is hung on the main beam 100 through the driven trolley 1100.

[0062] The electric-driven monorail crane has a simple overall structure, is easy to implement and has good practicality. The tensile cable 600 is reciprocatedly wound through the cable guide wheels on the cable return trolley 700 and the cable guide wheels on the towing cable trolley 800, and the two ends of the tensile cable 600 are respectively connected to the power switch 605 and the power trolley 1000, thereby realizing direct power supply to the power trolley 1000; the power trolley 1000 powered by the tensile cable 600 moves on the main beam 100, and drives the towing cable trolley 800 to move synchronously, and the distance between the cable return trolley 700 and the towing cable trolley 800 is synchronously adjusted through the cable return trolley adjustment device, thereby realizing that the tensile cable 600 is always in a straightened state, ensuring reliable and stable power supply to the power trolley 1000, effectively solving the problem of underground pollution of internal combustion locomotives, and solving the problems of short endurance and frequent charging of battery locomotives.

[0063] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0064] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0065] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electric-driven monorail crane, characterized in that: It comprises a main beam (100), a tensile cable (600) and a cable return trolley adjustment device; A cable return trolley (700), a cable towing trolley (800) and a power trolley (1000) are mounted on the main beam (100) and are movable along the length direction thereof; A plurality of independently rotatable cable guide wheels are respectively installed on the cable return trolley (700) and the cable towing trolley (800); One end of the tensile cable (600) is connected to a power switch (605) fixed in the laneway, and the other end is reciprocatedly wound through a cable guide wheel on a cable return trolley (700) and a cable guide wheel on a cable towing trolley (800), and is connected to a power trolley (1000); The cable return trolley adjustment device is connected to the cable return trolley (700) and is capable of adjusting the moving position of the cable return trolley (700) so that the tensile cable (600) is always in a straightened state; The cable return trolley (700) comprises a cable return trolley frame (701), on which a plurality of independently rotatable first guide wheels (703) are mounted via a first mounting shaft (702), and a plurality of independently rotatable second guide wheels (705) are mounted via a second mounting shaft (704); the towing cable trolley (800) comprises a towing cable trolley frame (801), on which a plurality of independently rotatable second guide wheels (705) are mounted via a fourth mounting shaft (802). A fourth guide wheel (803) that can rotate independently, and a plurality of fifth guide wheels (805) that can rotate independently are installed via a fifth installation shaft (804); the second guide wheel (705) and the fifth guide wheel (805) are arranged on the opposite inner sides of the first guide wheel (703) and the fourth guide wheel (803), and the winding diameter of the second guide wheel (705) is smaller than the winding diameter of the first guide wheel (703), and the winding diameter of the fifth guide wheel (805) is smaller than the winding diameter of the fourth guide wheel (803).

2. The electric-driven monorail crane according to claim 1, characterized in that: A third guide wheel (707) is rotatably mounted on the cable return trolley frame (701) via a third mounting shaft (706).

3. The electric-driven monorail crane according to claim 1, characterized in that: A cable supporting trolley (900) is also mounted on the main beam (100) and is arranged between the cable return trolley (700) and the cable towing trolley (800); the cable supporting trolley (900) comprises a cable supporting trolley frame (901), and a plurality of independently rotatable support wheels (903) are mounted on the cable supporting trolley frame (901) via a sixth mounting shaft (902), and the support wheels (903) are used to provide rolling support for the tension cable (600).

4. The electric-driven monorail crane according to claim 1, characterized in that: The power trolley (1000) comprises a support body (200); a transmission rack (101) is connected to the lower side of the main beam (100) along its length direction; a driving device (202) and a rotating shaft (203) drivingly connected to the output shaft of the driving device (202) are installed on the support body (200); a rotating disk (204) is sleeved on the rotating shaft (203); a plurality of cylindrical pins (207) capable of rolling engagement with the tooth grooves of the transmission rack (101) are arranged in an annular array on the circumference of the rotating disk (204); a sleeve (208) is sleeved on the cylindrical pin (207).

5. The electric-driven monorail crane according to claim 4, characterized in that: The main beam (100) is an I-beam structure; rollers (209) capable of engaging with two sides of the I-beam main beam (100) are rotatably mounted on the support body (200).

6. The electric-driven monorail crane according to claim 4, characterized in that: Two adjacent transmission racks (101) are connected and installed via a connecting plate (105); the connecting ends of the two adjacent transmission racks (101) are respectively provided with a positioning block (106) and a positioning groove (107) engaged with the positioning block (106).

7. The electric-driven monorail crane according to claim 1, characterized in that: The cable return trolley adjustment device comprises a winch (300); a steel wire rope (500) connected to the cable return trolley (700) is wound around the winch (300); and a tensioning device (400) capable of tensioning the steel wire rope (500) is provided on a side of the winch (300) close to the cable return trolley (700).

8. The electric-driven monorail crane according to claim 1, characterized in that: The cable return trolley adjustment device is in the form of a power trolley (1000) structure, and the cable return trolley (700) is mounted on the main beam (100) through the cable return trolley adjustment device.

9. The electric-driven monorail crane according to claim 1, characterized in that: It also includes a cable rack (606) installed along the main beam (100), on which a plurality of rotating wheels (607) capable of supporting and rolling the tensile cables (600) are installed.

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