CN210059895U

CN210059895U - Variable-pitch rail hole distribution drill

Info

Publication number: CN210059895U
Application number: CN201920919629.4U
Authority: CN
Inventors: 刘成彬; 赵新亮; 梁维平; 黄小菊
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-02-14
Anticipated expiration: 2029-06-19

Abstract

A variable-pitch rail matched hole drill belongs to the field of railway construction and maintenance, and comprises a power input device, a shell, a feeding device, a transmission device, a drill rod, a locking device, a positioning device and a pitch adjusting device; the pitch adjusting device comprises an adjusting shifting fork, a limiting groove plate, a locking element, a handle and a guide plate; the drilling hole pitch can be adjusted, the number of carried equipment is reduced, and the efficiency is high.

Description

Variable-pitch rail hole distribution drill

Technical Field

The utility model belongs to railway construction and repair tools field, in particular to but a variable pitch rail distribution drill when standard railway joins in marriage the rail or speedily carry out rescue work emergency treatment rail.

Background

The railway transportation is rail transportation, the main infrastructure of the rail transportation is rails, most of the common rails are customized into standard parts by factories and then are installed on a roadbed to form the rails, and trains run on the rails to finish the railway transportation; however, in some switches or switchyards or temporary railway emergency rescue, two sections of rails need to be connected according to the length of the rails, and the connection mode mostly adopts butt joint of the two sections of rails, then holes are drilled at the ends of the rails, and the ends of the two sections of rails are fixedly connected into a whole by using clamping plates; because of the limitation of the working environment of the railway track, the railway track is generally operated in the field, and the power supply and the equipment are inconvenient to carry, the existing hole-matching drill is a drill bit, only one hole can be processed each time, the butt joint of the two rails of the track is required to be provided with a clamp plate mounting hole at the end part of each rail, and the clamp plate is a standard part, so that three holes meeting the standard are required to be drilled at the end part of each rail; because the existing drilling equipment is a drill bit, the drilling efficiency is low, the drilling precision is also low, and for emergency construction such as emergency rescue and disaster relief, a large amount of economic loss can be saved and recovered to ensure safety every 1 minute of traffic speed, so the invention invents a rail hole-matching drill which can drill three holes at one time, and in the use process, in the existing railway track, the hole pitch of the common standard rail hole-matching has 60 rails, and the specification is that the first hole pitch is 76 mm from the end of the rail; the second hole is 140 mm from the first hole; the third hole is 140 mm from the second hole; all holes are 79 mm from the bottom of the rail; the aperture is 31 mm;

50 rail: the first hole is 66 mm from the rail end; the second hole is 150 mm away from the first hole; the third hole is 140 mm from the second hole; all holes are 68.5 mm from the bottom of the rail; the aperture is 31 mm; when two specifications of rails exist in a construction site and holes need to be matched, different drilling equipment still needs to be replaced, and inconvenience is brought to maintenance or emergency rescue.

Disclosure of Invention

The condition that can not adapt to two kinds of specification rails to inventor's rail counter bore existence, the utility model provides a variable distance rail counter bore, its characterized in that: the drilling machine comprises a power input device, a shell, a feeding device, a transmission device, a drill rod, a locking device, a positioning device and a pitch adjusting device; the power input device is arranged at the end part of the power input shaft and is connected with the power input shaft in a sliding key way; the shell is arranged outside the power input shaft, is connected with the power input shaft through a bearing, and is fixedly connected with the locking device; the feeding device is arranged on the shell and connected with the power input shaft, and the power input shaft can be pushed to do linear motion in the shell by pulling the handle; the transmission device is arranged between the locking device and the feeding device, is connected with the shell through a power input shaft and a bearing, and the end part of the transmission device is connected with the power input device; the transmission device is connected with the locking device through a guide shaft of the locking device and can slide on the guide shaft of the locking device; the power output shaft of the transmission device is connected with the drill rod; three power output shafts of the transmission device are respectively connected with the three drill rods; the three drill rods are respectively connected with the power output shaft of the transmission device and can rotate under the driving of the power output shaft; the locking device is arranged on the shell and is positioned at one end of the shell; the positioning device is arranged on the locking device and is fixedly and adjustably connected with the locking device; the pitch adjusting device is arranged on the transmission device and is connected with a driving gear shaft, a transition gear shaft, a power output gear shaft and the box body of the transmission device respectively, and the distance between the power output gear shaft and the driving gear shaft can be adjusted.

Furthermore, the power input device comprises a power input wheel and a rotating sleeve; the power input wheel is a gear or a chain wheel or a belt pulley or a coupling; the outer part of the power input wheel is connected with the power device, and the inner part of the power input wheel is fixedly connected with the rotating sleeve; the rotating sleeve is arranged at one end of the shell, is connected with the shell through a bearing and can rotate on the shell; the rotary sleeve is a hollow sleeve, a sliding key groove is formed in the inner hole of the rotary sleeve, and the power input shaft can do linear motion along the inner hole of the rotary sleeve.

Furthermore, the feeding device comprises a handle, a connecting shaft, a supporting frame, a driving wheel, a rack and a pushing sleeve; the handle is arranged at one end of the connecting shaft and is fixedly connected with the connecting shaft; the connecting shaft is arranged on the supporting frame, is fixedly connected with the supporting frame through a bearing and can rotate on the supporting frame; one end of the connecting shaft is connected with the handle, and the other end of the connecting shaft is connected with the driving wheel; the support frame is arranged on the shell and is fixedly connected with the shell; the supporting frame is a buckled cavity body; the driving wheel is arranged at one end of the connecting shaft, is positioned in the supporting frame and is fixedly connected with the connecting shaft; the driving wheel is a sector gear, and a tooth part of the driving wheel is meshed with the rack; the rack is arranged on the pushing sleeve and is fixedly connected with the pushing sleeve, and the tooth part of the rack is meshed with the tooth part of the driving wheel; the pushing sleeve is arranged on the power input shaft and is connected with the power input shaft through a bearing.

Furthermore, the transmission device comprises a power input shaft, a driving gear, a transition gear, a power output gear and a box body; the power input shaft is arranged on the driving gear and is fixedly connected with the driving gear through a coupler; the driving gear is arranged on the box body through a driving gear shaft and is positioned in the box body; bearings are arranged at two ends of the driving gear shaft and are fixedly connected with the box body through the bearings; the tooth part of the driving gear is meshed with the transition gear, so that the transition gear can be driven to rotate; the inner circle of the transition gear is provided with a bearing, the bearing is connected with a transition gear shaft through the bearing and can rotate on the transition gear shaft, and a tooth part of the transition gear is respectively meshed with the driving gear and the power output gear and can transmit the rotating motion of the driving gear to the power output gear; the two transition gears are respectively arranged on two sides of the driving gear; the transition gear shaft is arranged on the pitch adjusting device and connected with the pitch adjusting device; the power output gear is arranged on the pitch adjusting device through a power output gear shaft and a bearing, is positioned in the box body and can rotate on the pitch adjusting device, and a tooth part of the power output gear is meshed with a tooth part of the transition gear; the two power output gears are respectively positioned at the outer sides of the two transition gears; the box body is a hollow cavity body and comprises a box body main body and a box body cover, and a bearing mounting seat is arranged on the box body and corresponds to the driving gear shaft; a long round hole is formed in the side wall of the box body, which is positioned on one side of the drill rod, and corresponds to the power output gear shaft, and the length of the long round hole is larger than or equal to the distance required to be adjusted during hole distance adjustment; the top of the box body is provided with a penetrating space of the pitch adjusting device and an installation structure of a limiting groove plate of the pitch adjusting device; more than two guide holes are arranged on the box body main body and the box body cover and are matched with the guide shafts on the locking device, so that the box body can do linear motion on the guide shafts; one ends of the driving gear shaft and the power output gear shaft, which are positioned on the side wall of the box body main body, are provided with drill rod connecting devices, and the connecting devices are holes or bosses and can fix the drill rods at the ends of the shafts; the axial lead of the two power output gear shafts and the axial lead of the driving gear shaft are positioned on the same plane and are parallel to each other, wherein the distance from the power output gear shafts to the axis of the driving gear shaft is equal to the hole distance of the end part of the rail needing to be punched.

Furthermore, the locking device comprises an outer locking block, a locking shaft, a locking handle, a sliding block, a connecting piece, a pin shaft, a supporting plate, a guide shaft, a mounting plate and an inner locking block; the outer locking block is arranged at one end of the supporting plate, and the middle part of the outer locking block is hinged with the supporting plate; the locking shaft is arranged on the sliding block and is screwed with the sliding block through threads; the locking handle is sleeved in a hole at one end of the locking shaft; the sliding block is arranged on the locking shaft through a pin shaft and is in screwed connection with the locking shaft; the connecting piece is arranged on the supporting plate and is hinged with the supporting plate through a pin shaft, and the other end of the connecting piece is sleeved with the locking shaft; the pin shaft is arranged on the supporting plate, is fixedly connected with the supporting plate and can rotate in the pin hole on the sliding block; the supporting plate is arranged on the mounting plate and is fixedly connected or hinged with the mounting plate; the guide shafts are arranged on the mounting plate, more than two guide shafts are arranged, one end of each guide shaft is fixedly connected with the mounting plate, the other end of each guide shaft is connected with the inner locking block, and the middle part of each guide shaft is sleeved with the box body of the transmission device; the mounting plate is arranged on the shell and is fixedly connected with the shell; the inner locking block is arranged at the end part of the guide shaft and is fixedly connected with the end part of the guide shaft.

Furthermore, the inner lock block comprises a plate body, an upper positioning part, a lower positioning part, a movable pin, a positioning wheel, a spring and a mounting hole; the plate body is plate-shaped and is provided with a hole connected with a guide shaft on the locking device; the upper positioning plate is arranged on the side edge of the plate body and is arc-shaped, and the shape and the size of the arc are matched with the arc at the connecting part of the web plate of the rail and the upper rail; the lower positioning part is arranged on the side edge of the plate body, is positioned on the same side as the upper positioning part and is arc-shaped, and the shape and the size of the arc are matched with the arc at the joint of the lower rail of the rail and the web plate; the distance from the upper positioning to the lower positioning is equal to the distance between the joints of the web and the upper rail and the lower rail of the rail; the movable pin is arranged on the plate body and penetrates through the thickness of the plate body, one end of the movable pin is provided with a step, the movable pin is fixedly connected with the connecting plate of the positioning wheel and then is contacted with the surface of the plate body, and the other end of the movable pin is connected with the spring through a gasket and a bayonet lock; the positioning wheel is arranged at one end of the step of the movable pin, the connecting plate of the positioning wheel is fixedly connected with the movable pin, and the positioning wheel body of the positioning wheel is clamped in the clamping groove on the plate body; the radius of the positioning wheel body is smaller than the radius of an arc at the joint of the lower rail and the web plate of the rail, and the distance from the high point of the positioning wheel body to the upper positioning is equal to the distance from the arc at the joint of the upper rail and the web plate of the rail of another specification to the joint of the lower rail and the web plate; the spring is arranged on the movable pin and sleeved with the movable pin; the spring is a compression spring, one end of the spring is in contact with the surface of the plate body, the other end of the spring is in contact with a gasket at the end part of the movable pin, and the connecting plate of the movable pin and the positioning wheel can be tightly pressed on the surface of the plate body by the spring force; the compression distance of the spring is larger than the depth of the positioning wheel embedded into the clamping groove on the plate body; the mounting holes are arranged on the surfaces of the two ends of the plate body, are matched with the connecting holes on the guide shafts on the locking devices and are connected with the guide shafts through pins or screws.

Furthermore, the pitch adjusting device comprises an adjusting shifting fork, a limiting groove plate, a locking element, a handle and a guide plate; the adjusting shifting fork is sleeved on the driving gear shaft and can rotate on the driving gear shaft, and the upper part of the adjusting shifting fork is fixedly connected with the handle; the end part of the shifting fork of the adjusting shifting fork is connected with the transition gear shaft; the two pairs of adjusting shifting forks respectively correspond to the two transition gear shafts, and each pair of adjusting shifting forks are respectively arranged at two ends of each transition gear shaft; the limiting groove plate is arranged at the upper part of the box body of the transmission device and is fixedly connected with the box body; the limiting groove plate is provided with two groups of positioning grooves which respectively represent two limiting positions for adjusting the pitch; the locking element is arranged at the upper part of the adjusting shifting fork, is clamped with the adjusting shifting fork and can move up and down on the adjusting shifting fork; the lower end of the limiting shaft is provided with a limiting shaft, the diameter of the limiting shaft is matched with the limiting groove on the limiting groove plate, namely, the limiting shaft cannot move after being clamped into the limiting groove; the handle is arranged on the top of the adjusting shifting fork and is respectively connected with a group of two adjusting shifting forks; the number of the handles is two, and the two handles correspond to the two groups of adjusting shifting forks respectively; the guide plate is arranged in a box body of the transmission device, is matched with the upper side wall and the lower side wall in the box body and can transversely move in the box body; the guide plate is provided with a guide groove and a mounting seat, the guide groove is sleeved with the transition gear shaft, and the mounting seat is fixedly connected with the power output gear shaft through a bearing; the guide plates are divided into two groups, which correspond to two power output gear shafts respectively, and each group of the guide plates is divided into two groups, corresponds to a single power output gear shaft and is positioned at two ends of the power output gear shaft.

Advantageous effects

The beneficial effects of the utility model reside in that, can realize joining in marriage the quick drilling that connects the rail, improve and join in marriage the rail and speedily carry out rescue work's efficiency, easy operation, drilling accuracy is high, conveniently carries, can adapt to field work to can adjust the drilling pitch-row, reduced equipment carrying volume.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention

A. The device comprises an upper track, a web plate, a track distribution hole, a lower track, a power input device, a shell, a feeding device, a transmission device, a drill rod, a locking device, a positioning device and a hole distance adjusting device, wherein the power input device is 1, the shell is 2, the feeding device is 3, the transmission device is 4, the drill rod is 5, the locking device is 6, the positioning device is 7, and the hole distance adjusting device is 8.

FIG. 2 is a schematic view of the feeding device and the transmission device with the cover removed

31. The drill rod comprises a handle, 32 connecting shafts, 33 supporting frames, 34 driving wheels, 35 racks, 36 pushing sleeves, 41 power input shafts, 42 driving gears, 43 transition gears, 44 power output gears, 45 boxes and 5 drill rods.

FIG. 3 is a schematic view of the locking device

61. The locking device comprises an outer locking block, 62 locking shafts, 63 locking handles, 64 sliding blocks, 65 connecting pieces, 66 pin shafts, 67 supporting plates, 68 guiding shafts, 69 mounting plates, 70 inner locking blocks and 4 transmission devices.

FIG. 4 is a schematic structural view of an inner locking block

701. Plate body, 702, upper positioning, 703, lower positioning, 704, movable pin, 705, positioning wheel, 706, spring, 707 mounting hole.

FIG. 5 is a schematic view of the pitch adjustment mechanism

81. An adjusting shifting fork, 82, a limiting groove plate, 83, a locking element, 84, a handle and 85, a guide plate.

FIG. 6 is another view angle structure diagram of the pitch adjusting device

5. The drilling rod, 81, an adjusting fork, 82, a limiting groove plate, 84, a handle and 85, a guide plate.

Detailed Description

To further illustrate the technical solution of the present invention, referring to the accompanying drawings, a specific embodiment of the present invention is described, as shown in fig. 1-5, two kinds of standard railway rails in our country are generally, that is, 50 and 60, in this example, the distance from the positioning wheel 705 to the upper positioning 702 is the distance from the joint of the upper rail a and the web B of the standard 60 rail to the joint of the lower rail and the web B, and the distance from the lower positioning 703 to the upper positioning 702 is the distance from the joint of the upper rail a and the web B of the standard 50 rail to the joint of the lower rail and the web B, a steel plate with a thickness of 10 mm is selected as the plate 701, and a hole connected with the guide shaft 68 on the locking device 6 is provided on the plate 701; the upper positioning 702 is arranged on the side edge of the plate body 701 and is arc-shaped, and the shape and the size of the arc are matched with the arc of the connecting part of the web B of the rail and the upper rail A; the lower positioning 703 is arranged on the side edge of the plate body 701, is positioned on the same side as the upper positioning 702, is arc-shaped, and the shape and the size of the arc are matched with the arc at the joint of the lower rail D and the web B of the rail; in the embodiment, a cylindrical pin with a step at one end and a jump ring groove at the other end is used as a movable pin 704, the movable pin 704 is arranged on a plate body 701 and penetrates through the thickness of the plate body 701, a roller with a connecting plate, which is commonly used in the industry, is used as a positioning wheel 705, the positioning wheel 705 is arranged at one end, with the step, of the movable pin 704, the connecting plate of the positioning wheel 705 is fixedly connected with the movable pin through a pin, and a positioning wheel body is clamped in a clamping groove on the plate body 701; the radius of the positioning wheel body (roller) is smaller than the arc radius of the joint of the lower track D and the web B of the rail; in this example, a cylindrical helical compression spring is used as the spring 706, and the spring 706 is mounted on the movable pin 704 and sleeved with the movable pin 704; one end of the connecting plate is in contact with the surface of the plate body 701, the other end of the connecting plate is in contact with a gasket at the end part of the movable pin 704, and the connecting plate of the movable pin 704 and the positioning wheel 705 can be tightly pressed on the surface of the plate body 701 by virtue of spring force; the compression distance of the spring 706 is ensured to be larger than the depth of the positioning wheel 705 embedded into the clamping groove on the plate body 701, so that when the movable pin 704 is pulled up, the stroke of the movable pin can meet the requirement that the positioning wheel 705 is separated from the plate body 701, and switching between different rails is completed; in this example, the through holes are used as the mounting holes 707, for example, the locking distance of the locking device 6 is adjusted, and the efficiency is improved, in this example, the number of the mounting holes is set to be more than 2, so that the rail can be locked by the minimum locking distance; the mounting holes 707 are disposed on the two end surfaces of the plate body, are matched with the connecting holes on the guide shaft 68 of the locking device 6, and are connected with the guide shaft 68 through pins or screws, so that the implementation of the inner locking block 70 is completed; the locking of two rails can be realized without replacing the specification of the inner locking block 70, so that the number of equipment and the number of carried accessories are reduced, and the replacement efficiency is improved.

In the embodiment, an arc-shaped plate-shaped steel plate is used as the outer locking block 61, two arc-shaped plate-shaped steel plates are used in the embodiment, and a plurality of lightening holes are formed in the surface of the plate body in order to lighten the weight; the outer locking block 61 is arranged at one end of the supporting plate 67 and is positioned at two sides of the supporting plate 67, the middle part of the outer locking block is hinged with the supporting plate 67, and a clamping groove arranged at the upper end of the outer locking block corresponds to and is clamped with the pin shaft on the sliding block 64; in this example, a threaded rod is selected as the locking shaft 62, and the locking shaft 62 is mounted on the sliding block 64 and is screwed with the sliding block 64 through threads; in the embodiment, round steel with limit at two ends is used as a locking handle 63, and the locking handle 63 is sleeved in a hole at one end of a locking shaft 62 and can freely slide in the hole, so that the length of the force arm when the locking handle 63 is moved is conveniently adjusted; in this example, a metal block with pin shafts on two sides is selected as the sliding block 64, wherein a through internal threaded hole is arranged on one side surface, and the specification and the size of the internal threaded hole are matched with the external thread on the locking shaft 62; in this example, a fork-shaped member commonly used in the industry is used as the connecting member 65, the connecting member 65 is hinged to the support plate 67 through the pin 66, and the other end of the connecting member is sleeved with the end of the locking shaft 62, that is, the locking shaft 62 can rotate on the end surface of the connecting member 65 but cannot move axially; in this example, a circumferential pin commonly used in the industry is selected as the pin 66, the pin 66 is mounted on the support plate 67 and fixedly connected with the support plate 67, and the connecting member 65 can rotate around the pin 66; in the embodiment, a steel plate with the thickness of 3-5 mm is selected as the support plate 67, and a plurality of lightening holes are formed in the plate body, so that the whole weight can be lightened, and the carrying and the operation are convenient; the supporting plate 67 is arranged on the mounting plate 69, one end of the supporting plate is fixedly connected or hinged with the mounting plate 69, the upper edge of the middle part of the supporting plate is fixedly connected with the pin shaft 66, and the other end of the supporting plate is hinged with the outer locking block 61; in the embodiment, guide shafts which are commonly used in the industry are selected as the guide shafts 68, 4 guide shafts are selected in the embodiment, are respectively arranged at four corners of the mounting plate and are in rectangular layout, and the long sides of the rectangles are parallel to the connecting lines of the three drill rods 5; the guide shaft 68 is arranged on the mounting plate 69, one end of the guide shaft is fixedly connected with the mounting plate 69, the other end of the guide shaft is connected with the inner locking block 70 by adopting a screw or a pin, and the middle part of the guide shaft is sleeved with the box body 45 of the transmission device 4, namely the box body can do linear motion on the guide shaft 68; in this example, a steel plate is selected as the mounting plate 69, and the mounting plate 69 is mounted on the housing 2 and fixedly connected with the housing 2; the inner locking piece 70 is mounted on the end of the guide shaft 68 and is fixedly connected with the end of the guide shaft 68, thus completing the implementation of the locking device 6.

In this example, an operating handle commonly used in the industry is selected as the handle 31, and the handle 31 is installed at one end of the connecting shaft 32 and is fixedly connected with the connecting shaft 32; in this example, a transmission shaft commonly used in the industry is used as the connecting shaft 32, the connecting shaft 32 is mounted on the support frame 33, and is fixedly connected with the support frame 33 through a bearing, and can rotate on the support frame 33, one end of the connecting shaft is fixedly connected with the handle 31, and the other end of the connecting shaft is fixedly connected with the driving wheel 34; in this example, two separate shells with the shape matched with the movement range of the driving wheel 34 are selected as the supporting frame 33, and the supporting frame 33 is installed on the shell 2 and fixedly connected with the shell 2; in this example, a sector gear commonly used in the industry is selected as the driving wheel 34, because the rotation range of the driving wheel 34 is small, compared with the full gear, the driving wheel 34 has the advantages of light weight and reduced part volume, the driving wheel 34 is arranged at one end of the connecting shaft 32 and is positioned in the supporting frame 33 and is fixedly connected with the connecting shaft 32, and the tooth part of the driving wheel is meshed with the tooth part of the rack; in this example, a straight rack commonly used in the industry is selected as the rack 35, the rack 35 is mounted on the pushing sleeve 36 and fixedly connected with the pushing sleeve 36, and the tooth part of the rack is meshed with the tooth part of the driving wheel 35; in this embodiment, a circumferential sleeve is used as the pushing sleeve 36, and the pushing sleeve 36 is mounted on the power input shaft 41 and connected to the power input shaft 41 through a bearing, so that the pushing sleeve 36 can simultaneously move axially under the action of the rotating power input shaft 41, thereby completing the implementation of the feeding device 3.

In this embodiment, a power transmission shaft commonly used in the industry is used as the power input shaft 41, and the power input shaft 41 is mounted on the driving gear 42 and is fixedly connected with the driving gear 42 through a coupler; in the embodiment, a straight toothed spur gear which is universal in the industry and meets the national standard is selected as the driving gear 42, and the driving gear 42 is connected with two ends of the box body 45 through a driving gear shaft and a bearing and is positioned in the box body 45; the tooth part of the driving gear 42 is meshed with the tooth part of the transition gear 43, so that the transition gear 43 can be driven to rotate; in this example, a straight-tooth gear matched with the driving gear 42 is selected as the transition gear 43, the transition gear 43 is connected with the box body 45 through a transition gear shaft and a bearing and can rotate in the box body 45, the tooth parts of the transition gear 43 are respectively meshed with the tooth parts of the driving gear 42 and the power output gear 44, and the rotary motion of the driving gear 42 can be transmitted to the power output gear 44; in this embodiment, two transition gears 43 are selected and respectively installed on two sides of the driving gear 42; in this example, a standard straight-tooth gear matched with the transition gear 43 is selected as the power output gear 44, the power output gear 44 is mounted on the box body 45 through a power output gear shaft and a bearing, is positioned in the box body 45 and can rotate on the box body 45, and a tooth part of the power output gear is meshed with a tooth part of the transition gear 43; the two power output gears 44 are respectively positioned at the outer sides of the two transition gears 43; in this example, a box body 45 made of cast iron or cast aluminum and having a cover at one end is selected as a cavity body, and bearing mounting seats are arranged on the side walls of the end parts of the main body of the box body 45 and the box body cover and respectively correspond to a driving gear shaft, a transition gear shaft and a power output gear shaft; the main body and the cover of the box body 45 are provided with 4 guide holes, the diameter of each guide hole is matched with the guide shaft 68 on the locking device 6, and the position of each guide hole corresponds to the guide shaft mounting hole on the mounting plate 39, so that the box body 45 can linearly move on the guide shaft 68; one ends of the driving gear shaft and the power output gear shaft, which are positioned on the side wall of the main body of the box body 45, are provided with drill rod 5 connecting devices, and the connecting devices are holes or bosses and can fix the drill rods 5 at the shaft ends; the axial leads of the two power output gear shafts and the axial lead of the driving gear shaft are positioned on the same plane and are parallel to each other, wherein the distance from the power output gear shaft to the axial lead of the driving gear shaft is equal to the hole pitch of the end part of the rail, which needs to be punched, thus completing the implementation of the transmission device 4.

The adjusting shifting fork 81 is sleeved on the driving gear shaft and can rotate on the driving gear shaft, and the upper part of the adjusting shifting fork is fixedly connected with the handle 84; connecting the shifting fork end part of the adjusting shifting fork 81 with a transition gear shaft; two pairs of the adjusting shifting forks 81 are selected and respectively correspond to two transition gear shafts, and each pair of the adjusting shifting forks 81 are respectively arranged at two ends of each transition gear shaft; the limiting groove plate 82 is arranged at the upper part of the box body of the transmission device and is fixedly connected with the box body; in this embodiment, two limiting groove plates 82 are selected to be installed in parallel, so that the locking element 83 can be locked stably; the limiting groove plates 82 are provided with arc-shaped positioning grooves, 4 positioning grooves are arranged on each limiting groove plate 82, and two of each two ends respectively represent two limiting positions for adjusting the hole pitch; the locking element 83 is arranged on the upper part of the adjusting shifting fork 81, two long round holes are formed in the adjusting shifting fork 81, in the embodiment, the upper end and the lower end of the locking element 83 are connected through steel plates with the width smaller than the axial length, the radius of the lower end shaft is equal to that of a limiting groove in the limiting groove plate 82, the upper shaft and the lower shaft penetrate into the two long round holes in the upper part of each pair of adjusting shifting forks 81 to be capable of moving in the long round holes, the locking element 83 is connected with the handle 84 or the adjusting shifting fork 81 through springs, the direction of the spring force is that the locking element 83 faces downwards, and therefore the locking element 83 can be always clamped on the limiting groove plate 82 when no external force acts on the locking element 83, and the drill rod 5 is guaranteed to be in a normal working position; the handle 84 is arranged at the top of the adjusting shifting fork 81, and two ends of the handle are respectively connected with a group of two adjusting shifting forks 81; two handles 84 are provided and respectively correspond to the two groups of adjusting shifting forks 81; the guide plate 85 is arranged in the box body 45 of the transmission device 4, is matched with the upper side wall and the lower side wall in the box body 45 and can transversely move in the box body 45; a guide groove and a mounting seat are arranged on the guide plate 85, the guide groove is sleeved with the transition gear shaft, and the mounting seat is fixedly connected with the power output gear shaft through a bearing; two groups of the guide plates 85 are selected and correspond to two power output gear shafts respectively, and two groups of the guide plates 85 are selected and correspond to a single power output gear shaft and are positioned at two ends of the power output gear shaft; this completes the implementation of the pitch adjustment device.

In the embodiment, a gear which is commonly used in the industry is used as the power input device 1, the power input device 1 is arranged at the end part of the power input shaft 41 and is in sliding key connection with the power input shaft 41, the tooth part of the power input device is meshed with a power output wheel of the power device, in the embodiment, a small internal combustion engine is used as the power device, a direct current motor can also be used as the power device, a bracket of the power device is fixed with the shell 2, and the gear at the end part of the power output shaft is meshed with the power input device 1; in the embodiment, a hollow cylinder with connecting flanges at two ends, which is commonly used in the industry, is selected as the shell 2, the shell 2 is arranged outside the power input shaft 41 and is connected with the power input shaft 41 through a bearing, and the outside of the shell is fixedly connected with the mounting plate 69 of the locking device 6; the feeding device 3 is arranged on the shell 2 and connected with the power input shaft 41, and the power input shaft 41 can be pushed to do linear motion in the shell 2 by pulling the handle 31 of the feeding device 3; the transmission device 4 is arranged between the locking device 6 and the feeding device 3, is connected with the shell 2 through a power input shaft 41 and is connected with the power input device 1; the transmission device 4 is connected with the locking device 6 through the box body 45 and can slide on a guide shaft 68 of the locking device 6; the power output shaft of the transmission device 4 is connected with the drill rod 5; three power output shafts of the transmission device 4 are respectively connected with three drill rods 5; the power output shafts are respectively positioned at the coaxial positions of the driving gear shaft and the two power output gear shafts, and the drill rod 5 can be driven by the power output shafts to rotate; in the embodiment, a hollow drill bit which meets the industrial standard is selected and combined with a mounting rod to serve as a drill rod 5; the locking device 6 is arranged on the shell 2 and is positioned at one end of the shell 2; in the embodiment, a positioning block is arranged at the end part of a cylindrical rod-shaped round steel to serve as a positioning device 7, the rod part is fixedly connected with a supporting plate of a locking device 6, and the connection position of the positioning device 7 is such that the vertical distance from the inner side of a stop block of the positioning device 7 to the central line of one of the drill rods 5 is equal to the vertical distance from the end part of a rail to the center of a drill hole corresponding to the drill rod 5; will positioner 7 install on locking device 6 and adopt bolt fixed connection with locking device 6 to can adjust positioner 7 apart from the perpendicular distance of drilling rod 5, install pitch-row adjusting device 8 on transmission 4, just so accomplished the utility model discloses an implementation.

When the locking device is used, according to setting, the stop block of the positioning device 7 is attached to the end part of the upper track A of the rail, the locking handle 63 of the locking device 6 is rotated, and the outer locking block 61 and the inner locking block 70 are respectively clamped on two surfaces of the web B and are positioned between the upper track A and the lower track D; due to the action of the positioning device 7, after the locking device 6 is locked, the corresponding positions of the drill rods 5 are the positions of the three rail-matching holes C, the power device, namely a small internal combustion engine, is started, the internal combustion engine transmits power to the power input device 1, the power input device 1 transmits the power to the driving gear 42 through the power input shaft 41, the driving gear 42 rotates to drive one drill rod 5 coaxial with the driving gear shaft to rotate, simultaneously transmits the power to the power output gear 44 through the two transition gears 43 and drives the two drill rods 5 on the two power output gear shafts to rotate, namely the three drill rods 5 synchronously rotate, at the moment, the handle 31 is pushed to move the transmission device 4 forwards along the guide shaft 68, so that a drill bit at the end part of the drill rod 5 is close to the web plate B to cut the web plate B, the three rail-matching holes C are drilled to penetrate through the web plate B simultaneously, at the moment, the handle 31 is moved in the opposite direction, so that the transmission device 4 drives the drill rod 5 to move in the direction far away from the surface of the web B until the drill rod is separated from the surface of the web B, the locking device 6 is loosened, the whole drilling device is taken down, and the next rail matching hole C is manufactured; because three holes are drilled simultaneously, the working efficiency is improved, because the switchable inner locking block 70 is adopted, the locking of rails with different specifications can be switched without replacing the inner locking block 70, when the hole distance of the drilled holes needs to be adjusted, the handle 84 is held by hand, the locking element 83 is moved upwards by fingers, the locking element 83 is separated from the limit slotted plate 82, then the handle 84 of the hole distance adjusting device 8 is moved, the adjusting shifting fork 81 swings around the driving gear shaft in the direction of the required adjustment distance, the shifting fork end part of the adjusting shifting fork 81 drives the transition gear shaft to synchronously swing along with the shifting fork end part, the transition gear 43 is also driven to swing, meanwhile, the transition gear shaft moves in the guide groove of the guide plate 85 to push the guide plate 85 to move, the power output gear shaft is also pushed to move, the distance from the drill rod 5 installed on the power output gear shaft to the drill rod 5 installed on the driving gear shaft is increased or reduced, the regulation of drilling distance has been accomplished, the shift fork drives transition gear 43 motion simultaneously, the tooth portion meshing of transition gear 43 and driving gear 42 and power take-off gear 44 has been guaranteed, the transmission of power has been guaranteed, when the handle moves to locking element 83 and is located the next constant head tank of spacing frid 82, loosen locking element 83, under the effect of spring force, locking element 83 card goes into the next constant head tank on the spacing frid 82, whole drilling equipment just can drill out the three hole of the pitch-row after the regulation, just so reduced equipment carrying capacity, adaptability is strong, realize quick drilling's purpose.

Claims

1. A variable-pitch rail hole distribution drill is characterized in that: the drilling machine comprises a power input device, a shell, a feeding device, a transmission device, a drill rod, a locking device, a positioning device and a pitch adjusting device; the power input device is arranged at the end part of the power input shaft and is connected with the power input shaft in a sliding key way; the shell is arranged outside the power input shaft, is connected with the power input shaft through a bearing, and is fixedly connected with the locking device; the feeding device is arranged on the shell and connected with the power input shaft, and the power input shaft can be pushed to do linear motion in the shell by pulling the handle; the transmission device is arranged between the locking device and the feeding device, is connected with the shell through a power input shaft and a bearing, and the end part of the transmission device is connected with the power input device; the transmission device is connected with the locking device through a guide shaft of the locking device and can slide on the guide shaft of the locking device; the power output shaft of the transmission device is connected with the drill rod; three power output shafts of the transmission device are respectively connected with the three drill rods; the three drill rods are respectively connected with the power output shaft of the transmission device and can rotate under the driving of the power output shaft; the locking device is arranged on the shell and is positioned at one end of the shell; the positioning device is arranged on the locking device and is fixedly and adjustably connected with the locking device; the pitch adjusting device is arranged on the transmission device and is connected with a driving gear shaft, a transition gear shaft, a power output gear shaft and a box body of the transmission device respectively, and the distance between the power output gear shaft and the driving gear shaft can be adjusted; the pitch adjusting device comprises an adjusting shifting fork, a limiting groove plate, a locking element, a handle and a guide plate; the adjusting shifting fork is sleeved on the driving gear shaft and can rotate on the driving gear shaft, and the upper part of the adjusting shifting fork is fixedly connected with the handle; the end part of the shifting fork of the adjusting shifting fork is connected with the transition gear shaft; the limiting groove plate is arranged at the upper part of the box body of the transmission device and is fixedly connected with the box body; the limiting groove plate is provided with two groups of positioning grooves which respectively represent two limiting positions for adjusting the pitch; the locking element is arranged at the upper part of the adjusting shifting fork, is clamped with the adjusting shifting fork and can move up and down on the adjusting shifting fork; the lower end of the limiting shaft is provided with a limiting shaft, the diameter of the limiting shaft is matched with the limiting groove on the limiting groove plate, namely, the limiting shaft cannot move after being clamped into the limiting groove; the handle is arranged on the top of the adjusting shifting fork and is respectively connected with a group of two adjusting shifting forks; the guide plate is arranged in a box body of the transmission device, is matched with the upper side wall and the lower side wall in the box body and can transversely move in the box body; the guide plate is provided with a guide groove and a mounting seat, the guide groove is sleeved with the transition gear shaft, and the mounting seat is fixedly connected with the power output gear shaft through a bearing.

2. A variable pitch rail piercing drill as claimed in claim 1, wherein: the two pairs of adjusting shifting forks respectively correspond to the two transition gear shafts, and each pair of adjusting shifting forks are respectively arranged at two ends of each transition gear shaft.

3. A variable pitch rail piercing drill as claimed in claim 1, wherein: the number of the handles is two, and the handles correspond to the two groups of adjusting shifting forks respectively.

4. A variable pitch rail piercing drill as claimed in claim 1, wherein: the guide plates are divided into two groups, which correspond to two power output gear shafts respectively, and each group of the guide plates is divided into two groups, corresponds to a single power output gear shaft and is positioned at two ends of the power output gear shaft.