An emergency positioning and parking device for subway shield transport electric locomotives

Abstract

The present invention discloses an emergency positioning parking device for a subway shield transport electric locomotive. The electric locomotive is arranged on a track in a subway tunnel. The parking device of the electric locomotive includes trigger mechanisms symmetrically arranged on both sides of the rear of the electric locomotive and trigger-type iron shoe flipping mechanisms arranged on the outer sides of the two tracks. When the electric locomotive slides backward, the trigger mechanism simultaneously triggers the iron shoe flipping mechanisms on both sides and causes the anti-slip iron shoes arranged on the iron shoe flipping mechanisms to flip to contact the top surface of the corresponding track. After the anti-slip iron shoes contact the motor wheels, they can be detached from the iron shoe flipping mechanisms and slid onto the track. By triggering the iron shoe flipping mechanisms on both sides of the track in front of the sliding car, the anti-slip iron shoes are flipped to the top surface of the track in time. The motor wheels push the anti-slip iron shoes to slide on the guide rails together. Due to the large friction surface between the anti-slip iron shoes and the track, the backward sliding speed of the electric locomotive is greatly slowed down until it stops. The present invention has a simple structure and is a non-destructive braking method.

Description

Technical Field

[0001] The invention relates to an emergency positioning parking device for a subway shield transport electric locomotive. Background Art

[0002] As today's most advanced construction equipment, tunnel boring machines (TBMs) are widely used in urban subway and rail transit tunneling projects. Battery-powered, new energy lithium-ion, and supercapacitor AC-driven mining locomotives are used in conjunction with TBMs as rail transport equipment. During the TBM excavation process, they are primarily used to transport construction materials such as segments, mortar, and pea gravel, as well as to transport excavation debris to the tunnel entrance. During TBM tunneling operations in subway tunnels, the locomotives face steep track gradients (up to 40‰), frequent heavy-loaded train starts and stops on the slopes, and short braking distances. This creates a high probability of slippage, potentially injuring on-site workers or damaging the TBM.

[0003] At present, many electric locomotives produced by domestic manufacturers are basically not equipped with anti-skid devices. Even if some electric locomotives are equipped with anti-skid devices, they cannot prevent skidding in actual use due to reasons such as unreasonable design structure.

[0004] There are three common types of emergency anti-slip devices: First, an anti-slip hook 4 cut from a steel plate is installed at the front end of the electric locomotive 1 and connected to the vehicle body through a vehicle body connection device 3. When the vehicle slips, the driver operates the operating handle 2 to make the anti-slip hook 4 hook the middle sleeper 5 of the track 6 to prevent the vehicle from slipping. Figure 1 As shown; Second, a cylindrical anti-slip latch 7 is installed at the front end of the electric locomotive 1, which is connected to the vehicle body through a second vehicle body connecting device 8. When the vehicle slips, the driver operates the handle 2 to insert the cylindrical anti-slip latch 7 between the track 6 and the sleeper 5 to prevent the vehicle from slipping. Figure 2As shown; Third, by arranging a clamping device 10 on the front middle part of both sides of the electric locomotive 1, when the locomotive slips, the clamping device 10 is driven by the control cylinder 9 to clamp the rails 5 on both sides, thereby preventing the locomotive from slipping. The anti-slip devices of the first and second structures mentioned above both have defects or imperfections. First, the transport rails laid by subway shield construction are temporary rails. During track laying, sleepers are often not used and the rails are laid directly on the rail cards. There are no sleepers for hooks or pins to use for leverage; second, even if sleepers are used to lay tracks, the above method is also a destructive anti-slip form, which damages the tracks and electric locomotive equipment, and even causes more serious safety incidents such as the electric locomotive derailing; third, the above device is very troublesome to reuse, and it is necessary to repair the damaged tracks or electric locomotive equipment, as well as the anti-slip device itself. The third anti-slip structure is basically perfect, and the effect is also very obvious, but the manufacturing cost is high, the processing technology is complicated, the installation strength requirements are high, and the maintenance and inspection are troublesome. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides an emergency positioning and parking device for a subway shield transport electric locomotive.

[0006] The technical solution adopted by the present invention is: an emergency positioning and parking device for a subway shield transport electric locomotive, comprising an electric locomotive, which is arranged on a track in a subway tunnel, and a trigger mechanism and a trigger-type iron shoe flipping mechanism arranged on the outer sides of the two tracks are symmetrically arranged on both sides of the rear of the electric locomotive. When the electric locomotive slides backward, the trigger mechanism simultaneously triggers the iron shoe flipping mechanisms on both sides and flips the anti-slip iron shoe arranged on the iron shoe flipping mechanism to contact the corresponding track top surface. After the anti-slip iron shoe contacts the motor wheel, it can be detached from the iron shoe flipping mechanism and slidably set on the track.

[0007] Preferably, the trigger mechanism is a connecting rod mechanism in which a telescopic cylinder pushes and pulls a trigger push rod to rotate around a fixed hinge point.

[0008] Preferably, the telescopic cylinder is arranged on the touch mounting frame, and the end of the telescopic rod of the telescopic cylinder is provided with a hinge joint, the end of the hinge joint is hinged to one end of the trigger push rod, the middle part of the trigger push rod is hinged on the touch mounting frame, and the other end of the trigger push rod is set as a free end that can rotate around the hinge point, and the free end of the trigger push rod triggers the iron shoe flipping mechanism to achieve flipping.

[0009] Preferably, the trigger push rod includes an intermediate body and a hinged rod portion extending outward from the intermediate body, a touch rod portion and a baffle portion, the hinged rod portion is arranged parallel to the touch rod portion, the end of the hinged rod portion is hinged to one end of the hinge head, the intermediate body is hinged to the touch mounting frame, the baffle portion is arranged perpendicular to the hinged rod portion and the touch rod portion, and the baffle portion contacts the limit plate arranged on the touch mounting frame when the telescopic cylinder pulls the trigger push rod to rotate the touch rod portion to a vertical position, and a roller is provided at the end of the touch rod portion, which triggers the iron shoe flipping mechanism to flip.

[0010] Preferably, the iron shoe flipping mechanism includes a trigger lever that can contact the free end of the trigger push rod, the lower middle part of the trigger lever is hinged on a hinge seat provided on the main seat plate, the contact end of the trigger lever and the trigger push rod is set as a free end, and the other end is hinged to one end of the connecting rod, the other end of the connecting rod is connected to the trigger lever, and the trigger lever is guided by a guide seat provided on the main seat plate. The trigger lever triggers the torsion device to rotate and drives the anti-slip iron shoe to flip.

[0011] Preferably, the torsion device includes a torsion spring, a dividing wheel, and a swing arm device, all of which are sleeved on the torsion shaft; the swing arm device is sleeved on one end of the torsion shaft, the torsion spring is arranged between the dividing wheel and the swing arm device, and the front end of the torsion shaft and the rear end of the swing arm device are arranged on a mounting seat on the main seat plate; one end of the torsion spring is fixed to an end panel provided on the swing arm device and can rotate together with the swing arm device, and the other end is fixed to a fixed plate provided on the main seat plate, and the middle lead-out part of the torsion spring is fixed to a mounting plate provided on the main seat plate; the torsion shaft synchronously drives the dividing wheel and the swing arm device to rotate, and the angle of torsion of the torsion spring when the swing arm device rotates is limited by the trigger rod, and after the trigger rod releases the position limit of the torsion spring, the swing arm device synchronously drives the anti-slip iron shoe to flip.

[0012] Preferably, the dividing wheel includes a cylindrical small end and a cylindrical large end, and a plurality of limiting holes are provided on the outer end surface of the cylindrical small end in a circumferential direction. The trigger rod is inserted into the corresponding limiting hole to limit the torsion position of the torsion spring, and the trigger mechanism drives the trigger rod to be pulled out from the limiting hole to realize the flipping of the anti-slip iron shoe.

[0013] Preferably, the swing arm device includes a column, the outer wall of the column is connected to a sleeve via a connecting plate, the sleeve is fitted with a sleeve rod provided on the anti-slip iron shoe, and the sleeve rod is slidably provided in the sleeve.

[0014] Preferably, the inner hole of the sleeve is set as a square hole, and the corresponding sleeve rod is set as a square rod adapted to the square hole, and the sleeve rod is slidably set in the square hole.

[0015] Preferably, the anti-slip iron shoe includes a hollow upper shell, which is arranged on a long contact plate, and the long contact plate is in contact with the top of the track. An inwardly bent edge is provided at the tail of the long contact plate, and a sleeve sliding rod is provided on the edge close to the swing arm device side. The sliding rod includes a bottom column, and the sleeve rod is provided at the center of the end of the bottom column.

[0016] The purpose of the present invention is to trigger the iron shoe flipping mechanism on the two side tracks in front of the sliding position of the electric locomotive to flip the anti-slip iron shoe to the top surface of the track in time when the electric locomotive slips. When the motor wheel contacts the anti-slip iron shoe, the motor wheel pushes the anti-slip iron shoe to slide on the guide rail. Since the friction surface between the anti-slip iron shoe and the track is large, the backward sliding speed of the electric locomotive is greatly slowed down until it stops.

[0017] Beneficial effects of the present invention:

[0018] 1. The structure of the present invention is relatively simple and the cost is low;

[0019] 2. The device of the present invention controls the extension and retraction of an external telescopic cylinder, which drives the trigger push rod to rotate. The trigger push rod pushes the trigger lever, which causes the trigger lever to be withdrawn from the indexing wheel. The predetermined torsional force of the torsion spring drives the swing arm device to accurately flip onto the track. There are no lubrication devices such as bearings, and no oiling is required, which can reduce maintenance.

[0020] 3. When the locomotive slips backward, the device of the present invention triggers the anti-skid iron shoe to move onto the track, and the anti-skid iron shoe generates a large friction force to slow down the movement speed of the wheel until it stops. The whole process is non-destructive braking, and the device can be recycled.

[0021] 4. The wear parts of the present invention, such as springs, rollers, etc., are easy to replace and have low manufacturing costs.

[0022] 5. The device of the present invention has a pneumatic trigger device that can automatically reset and an iron shoe flip mechanism that can be flexibly positioned to adapt to the construction site;

[0023] 6. The whole device of the present invention is easy to install and is suitable for new electric locomotives and the modification and installation of electric locomotives.

[0024] 7. The present invention adopts trigger control with fast response. Multiple iron shoe flipping devices are set on the track, which gives the operator enough reaction time to avoid the occurrence of backward sliding accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of a hook-type anti-slip device in the prior art of the present invention.

[0026] Figure 2 This is a structural diagram of the prior art latch-type anti-slip device of the present invention.

[0027] Figure 3 This is a structural diagram of the prior art clamping rail anti-slip device of the present invention.

[0028] Figure 4 This is a diagram showing the positional relationship between the trigger mechanism and the iron shoe flipping mechanism of the present invention.

[0029] Figure 5 For the present invention Figure 4 side view.

[0030] Figure 6 Schematic diagram of the trigger mechanism of the present invention.

[0031] Figure 7 For the present invention Figure 6 Center A view.

[0032] Figure 8 This is a structural diagram of the iron shoe turning mechanism of the present invention.

[0033] Figure 9 For the present invention Figure 8 Side view.

[0034] Figure 10 This is a structural diagram of the swing arm device of the present invention.

[0035] Figure 11 For the present invention Figure 10 Middle BB cross-section view.

[0036] Figure 12 This is a structural view of the trigger push rod of the present invention.

[0037] Figure 13 This is a structural view of the anti-skid iron shoe of the present invention.

[0038] Figure 14 For the present invention Figure 13 Side view.

[0039] Figure 15 These are the front and side views of the indexing wheel of the present invention.

[0040] In the figure: 1. Electric locomotive; 2. Operating handle; 3. Car body connecting device; 4. Anti-slip hook; 5. Sleeper; 6. Track; 7. Anti-slip latch; 8. Second car body connecting device; 9. Control cylinder; 10. Clamping device; 11. Trigger mechanism; 12. Iron shoe turning mechanism; 111. Telescopic cylinder; 112. Touch mounting bracket; 113. Articulated joint; 114. Trigger push rod; 115. Roller; 116. Hinge point; 117. Limit plate; 121. Main seat plate; 122. Trigger lever; 123. Linking rod; 124. Guide seat; 125. Trigger lever; 126. Torsion shaft; 127. Indexing wheel; 129. Torsion Spring; 130, swing arm device; 131, sliding rod; 132, anti-slip iron shoe; 1141, hinged rod portion; 1142, baffle portion; 1143, contact rod portion; 1144, intermediate body; 1211, mounting seat; 1212, hinged seat; 1213, fixing plate; 1214, fixing seat; 1271, small end of cylinder; 1272, large end of cylinder; 1273, limiting hole; 1301, column; 1302, sleeve; 1303, connecting plate; 1304, square hole; 1305, end panel; 1321, upper shell; 1322, long contact plate; 1323, bottom column; 1324, sleeve rod; 1325, edge. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] Reference 4- Figure 15 As shown, the specific structure of the present invention is an emergency positioning and stopping device for a subway shield transport electric locomotive, comprising a trigger mechanism 11 and a shoe flipping mechanism 12 triggered by the trigger mechanism 11. The two trigger mechanisms 11 are arranged on both sides of the rear of the electric locomotive 1, and the two shoe flipping mechanisms 12 are arranged on the outside of the two tracks 6. The shoe flipping mechanisms 12 are mainly installed at the large ramp position, one is arranged a certain distance below the top of the ramp and a certain distance above the bottom of the ramp. A safety distance is set between the installation positions of the two shoe flipping mechanisms 12, and the safety distance is not less than 30 meters. When the electric locomotive 1 slides backward, the trigger mechanism 11 simultaneously triggers the shoe flipping mechanisms 12 on both sides and causes the anti-slip iron shoes 132 installed on the shoe flipping mechanisms 12 to flip to contact the top surface of the corresponding track 6. After contacting the wheel, the anti-slip iron shoes 132 can slide on the track 6 and slide with the wheel. Due to the large contact area between the anti-slip iron shoes 132 and the track 6, the friction between them and the track 6 can greatly slow the backward sliding speed of the electric locomotive 1 until it stops.

[0043] Further, such as Figure 6As shown, the trigger mechanism 11 adopts a connecting rod mechanism in which a telescopic cylinder 111 pushes and pulls a trigger push rod 114 to rotate around a fixed hinge point 116 , and the rotation of the trigger push rod 114 applies a trigger force to the iron shoe turning mechanism 12 .

[0044] As a preferred embodiment of the trigger mechanism 11, the trigger mechanism 11 includes a telescopic cylinder 111, which can be a pneumatic cylinder or a hydraulic cylinder; the telescopic cylinder 111 is arranged on a touch-screen mounting frame 112, and the touch-screen mounting frame 112 is arranged on both sides of the rear of the electric locomotive 1; the end of the telescopic rod of the telescopic cylinder 111 is connected to one end of a hinged joint 113, and the other end of the hinged joint 113 is hinged to one end of a trigger push rod 114, and a hinge point 116 in the middle of the trigger push rod 114 is fixed on the touch-screen mounting frame 112, and the other end of the trigger push rod 114 rotates around the hinge point 116 during the pushing and pulling process of the telescopic cylinder 111.

[0045] Further, such as Figure 12 As shown, the trigger push rod 114 includes a middle body 1144 and a hinged rod portion 1141 extending outward from the body, and a touch rod portion 1143. The hinged rod portion 1141 and the touch rod portion 1143 are arranged in parallel. The end of the hinged rod portion 1141 is hinged to the hinge head 113. The middle body 1144 is hinged to the touch mounting frame 112 to form a middle-hinged rocker structure, which triggers the iron shoe flipping mechanism 12 to flip through the touch rod portion 1143.

[0046] Preferably, a baffle portion 1142 of a vertical hinged rod portion 1141 and a touch rod portion 1143 is also provided on the middle body 1144. When the telescopic cylinder 111 pulls the trigger push rod 114 to rotate the touch rod portion 1143 to a vertical position, the baffle portion 1142 contacts the limit plate 117 provided on the touch mounting frame 112, thereby limiting the moving position of the trigger push rod 114 to ensure safety.

[0047] Preferably, Figure 7 As shown, a roller 115 is provided at the end of the touch rod portion 1143, and the iron shoe flipping mechanism 12 is flipped by rolling the roller 115. A roller seat is provided at the end of the touch rod portion 1143. The setting of the roller 115 can reduce the friction during triggering and improve the triggering effect.

[0048] It should be noted that, combined with Figure 4 and Figure 6The iron shoe flipping mechanism 12 triggered by the trigger mechanism 11 includes a trigger trigger rod 122 that can contact the roller 115 or other triggering form provided on the touch rod portion 1143. During normal driving of the electric locomotive 1, the telescopic cylinder 111 is in a retracted state, that is, the touch rod portion 1143 is in a raised state after rotating around the hinge point 116, and the trigger trigger rod 122 is tilted toward the rear sliding direction of the electric locomotive 1 under normal circumstances. At this time, the trigger trigger rod 122 does not contact the touch rod portion 1143; when encountering an emergency, the driver applies the emergency brake through the operating handle 2, the telescopic cylinder 111 extends and drives the touch rod portion 1143 to rotate clockwise, and stops rotating when the baffle portion 1142 contacts the limit plate 117. At this time, the touch rod portion 1143 is vertically arranged and contacts the trigger trigger rod 122.

[0049] Further, such as Figure 8 As shown, the lower middle part of the trigger lever 122 is hinged on the hinge seat 1212 provided on the main seat plate 121, the contact end of the trigger lever 122 and the touch rod portion 1143 is set as a free end, and the other end is hinged to one end of the connecting rod 123, and the other end of the connecting rod 123 is connected to the trigger lever 125, and the trigger lever 125 triggers the torsion device to rotate and drive the anti-slip iron shoe 132 to flip; the trigger lever 122 can rotate around the hinge position on the hinge seat 1212, thereby pulling the connecting rod 123 to move, and the connecting rod 123 can drive the movement of the trigger lever 125, and the torsion device is triggered by the movement of the trigger lever 125 to realize the flipping of the iron shoe flipping mechanism 12; the trigger lever 125 is guided by the guide seat 124 provided on the main seat plate 121.

[0050] This embodiment relies on the torsion spring 129 as the torsion device of the torsion component. In addition to the torsion spring 129, other torsion components that achieve the same function can also be used to achieve the flipping of the anti-slip iron shoe 132.

[0051] Furthermore, the torsion device includes a torsion spring 129, a dividing wheel 127, a swing arm device 130 and a torsion shaft 126; the swing arm device 130 is sleeved on one end of the torsion shaft 126, the torsion spring 129 is arranged between the dividing wheel 127 and the swing arm device 130, one end of the torsion spring 129 is fixed to the end panel 1305 of the swing arm device 130, and the other end is fixed to the fixed plate 1213 provided on the main seat plate 121, and the middle of the torsion spring 129 is guided The output portion is fixed on a fixed seat 1214 provided on the main seat plate 121, and one end of the torsion shaft 126 and one end of the swing arm device 130 are provided on the mounting seat 1211 on the main seat plate 121; the torsion spring 129 synchronously drives the indexing wheel 127 to rotate through the torsion shaft 126 to achieve torsion, and the torsion angle is limited by the trigger rod 125. After the trigger rod 125 releases the position limit of the torsion spring 129, the torsion shaft 126 synchronously drives the swing arm device 130 to rotate, thereby driving the anti-slip iron shoe 132 to flip.

[0052] Preferably, keys are provided at the contact points between the dividing wheel 127 and the swing arm device 130 and the inner hole of the torsion shaft 126, and key slots are provided on the corresponding dividing wheel 127, the swing arm device 130 and the torsion shaft 126, so as to facilitate installation. At the same time, the torsion shaft 126 can synchronously drive the dividing wheel 127 and the swing arm device 130.

[0053] Preferably, Figure 15 As shown, the dividing wheel 127 includes a cylindrical large end 1272 and a cylindrical small end 1271. The outer end surface of the cylindrical large end 1272 is penetrated by a plurality of limiting holes 1273 in the circumferential direction. The trigger rod 125 is inserted into the corresponding limiting hole 1273 to limit the torsion position of the torsion spring 129. The trigger mechanism 11 is triggered so that the trigger rod 125 is pulled out from the limiting hole 1273 to realize the flipping of the anti-slip iron shoe 132.

[0054] It should be noted that when the iron shoe flip mechanism 12 is not working, the anti-slip iron shoe 132 rotates with the torsion shaft 126 as the axis. Since one end of the torsion spring 129 is set on the end surface of the swing arm device 130, and the other end is fixed on the fixed plate 1213 set on the main seat plate 121, when the anti-slip iron shoe 132 is rotated to an appropriate position, the torsion spring 129 also rotates and twists therewith, and when the anti-slip iron shoe 132 rotates, the swing arm device 130 connected thereto also rotates together, and the swing arm device 130 rotates to drive the indexing wheel 1 provided at the other end. 27 rotates, and the trigger rod 125 is inserted into the limiting hole 1273 provided on the indexing wheel 127 to limit the torsion position of the torsion spring 129. The torsion spring 129 generates a torsional force when the iron shoe flipping mechanism 12 is not working; when the iron shoe flipping mechanism 12 is working, the roller 115 pushes the trigger rod 122, and the trigger rod 122 uses the lever principle to pull the trigger rod 125 out of the limiting hole 1273 of the indexing wheel 127. The torsion spring 129 outputs a torsion spring force for 0.5 seconds to flip the anti-slip iron shoe 132 and accurately position it on the top of the track 6.

[0055] Preferably, Figure 10 and Figure 11 As shown, the swing arm device 130 includes a column 1301, which is fitted with the torsion shaft 126. A sleeve 1302 is connected to the outer wall of the column 1301 through a connecting plate 1303. The sleeve 1302 is fitted with a sleeve rod 1324 provided at the lower end of the anti-slip iron shoe 132, and the sleeve rod 1324 can be slidably provided in the sleeve 1302.

[0056] Preferably, Figure 13 and Figure 14 As shown, the anti-slip iron shoe 132 includes a hollow upper shell 1321, and the upper shell 1321 is set on a long contact plate 1322. The length of the long contact plate 1322 is greater than the length of the upper shell 1321. The long contact plate 1322 contacts the top of the track 6. An inwardly bent edge 1325 is provided at the tail of the long contact plate 1322, which is used to prevent the long contact plate 1322 from sliding to both sides when it is restricted on the single track 6. A sliding rod 131 is provided on the edge 1325 close to the swing arm device 130. The sliding rod 131 includes a base column 1323 and a sleeve rod 1324 is provided at the center of the end of the base column 1323.

[0057] Preferably, the contact surface between the upper shell 1321 and the wheel is set as an arc-shaped surface, so that the wheel can slide together with the contact surface.

[0058] Preferably, the inner hole of the sleeve 1302 is set as a square hole 1304, and the corresponding sleeve rod 1324 is set to be compatible with the square hole 1304. The sleeve rod 1324 is set as a square rod, and the sleeve rod 1324 is slidably set in the square hole 1304.

[0059] It should be noted that the bottom surface of the long contact plate 1322 of the anti-slip iron shoe 132 contacts the top of the track 6. Since the long contact plate 1322 is set to a certain length, the contact area with the top of the track 6 can be increased. When the wheel contacts the curved surface of the upper shell 1302, the sleeve rod 1324 on the anti-slip iron shoe 132 slowly slides out of the sleeve 1302, so that the wheel and the upper shell 1302 can slide together on the track 6. Since the anti-slip iron shoe 132 generates a large friction with the track 6, it can prevent the wheel from sliding forward, thereby greatly slowing down the backward sliding speed of the electric locomotive 1 until it stops, which is a non-destructive braking.

[0060] During specific use, the telescopic cylinder 111 takes the air cylinder as an example. When the driver operates the brake control device operating handle 2 or the emergency brake button, the upper end of the telescopic cylinder 111 of the trigger mechanism 11 enters the compressed air provided by the electric locomotive 1, and the telescopic rod extends, pushing the trigger push rod 114 connected thereto to rotate and fall. In this state, the vehicle slides backward with the electric locomotive 1. When it reaches the installation position of the iron shoe turning mechanism 12, the roller 115 of the trigger mechanism 11 toggles and presses the trigger trigger rod 122 in the iron shoe turning mechanism 12. Pull the connecting rod 123 and the trigger rod 125 connected thereto, the trigger rod 125 is pulled out from the indexing wheel 127, and the torsion spring 129 outputs the torsion spring force for 0.5 seconds to make the anti-slip iron shoe 132 flip over and accurately position itself on the track 6; the electric locomotive 1 continues to slide backward, and when the wheel enters the anti-slip iron shoe 132, the wheel tread will no longer contact the track 6, and the anti-slip iron shoe 132 supports the wheel backward frictionally and brakes flexibly. The friction surface between the anti-slip iron shoe 132 and the rail is large, which greatly slows down the backward sliding speed of the electric locomotive 1 until it stops.

Claims

1. An emergency positioning and stopping device for a subway shield transport electric locomotive, comprising an electric locomotive (1), the electric locomotive (1) being arranged on a track (6) in a subway tunnel, and characterized in that: A trigger mechanism (11) and a trigger-type iron shoe flipping mechanism (12) are symmetrically arranged on both sides of the rear of the electric locomotive (1) and arranged outside the two tracks (6). When the electric locomotive (1) slides backward, the trigger mechanism (11) triggers the iron shoe flipping mechanisms (12) on both sides at the same time and flips the anti-slip iron shoe (132) arranged on the iron shoe flipping mechanism (12) to contact the top surface of the corresponding track (6). After the anti-slip iron shoe (132) contacts the motor wheel, it can be separated from the iron shoe flipping mechanism (12) and slidably arranged on the track (6); the trigger mechanism (11) is a connecting rod mechanism in which a telescopic cylinder (111) pushes and pulls a trigger push rod (114) to rotate around a fixed hinge point (116); the telescopic cylinder (111) is arranged on a touch-sensitive mounting frame (112); a hinge joint (113) is arranged at the end of the telescopic rod of the telescopic cylinder (111); the end of the hinge joint (113) is hinged to one end of the trigger push rod (114); the middle part of the trigger push rod (114) is hinged to the touch-sensitive mounting frame (112); the other end of the trigger push rod (114) is arranged to rotate around a hinge point (116) The free end of the trigger push rod (114) is rotated, and the free end of the trigger push rod (114) triggers the iron shoe flipping mechanism (12) to flip; the trigger push rod (114) includes an intermediate body (1144) and a hinged rod portion (1141) extending outward from the intermediate body (1144), a touch rod portion (1143) and a baffle portion (1142), the hinged rod portion (1141) and the touch rod portion (1143) are arranged in parallel, the end of the hinged rod portion (1141) is hinged to one end of the hinge head (113), and the intermediate body ( 1144) is hinged to the touch mounting frame (112), the baffle portion (1142) is arranged vertically to the hinged rod portion (1141) and the touch rod portion (1143), and the baffle portion (1142) contacts the limit plate (117) arranged on the touch mounting frame (112) when the telescopic cylinder (111) pulls the trigger push rod (114) to rotate the touch rod portion (1143) to a vertical position, and a roller (115) is arranged at the end of the touch rod portion (1143), and the roller (115) triggers the iron shoe flipping mechanism (12) to flip.

2. The emergency positioning and parking device for a subway shield transport electric locomotive according to claim 1, characterized in that: The iron shoe turning mechanism (12) includes a trigger lever (122) that can contact the free end of the trigger push rod (114). The lower middle portion of the trigger lever (122) is hinged to a hinge seat (1212) provided on the main seat plate (121). The end of the trigger lever (122) that contacts the trigger push rod (114) is set as a free end, and the other end is hinged to one end of a connecting rod (123). The other end of the connecting rod (123) is connected to a trigger lever (125). The trigger lever (125) is guided by a guide seat (124) provided on the main seat plate (121). The trigger lever (125) triggers the torsion device to rotate and drives the anti-slip iron shoe (132) to turn over.

3. The emergency positioning and parking device for a subway shield transport electric locomotive according to claim 2, characterized in that: The torsion device comprises a torsion spring (129), a dividing wheel (127), and a swing arm device (130), all of which are sleeved on the torsion shaft (126); the swing arm device (130) is sleeved on one end of the torsion shaft (126); the torsion spring (129) is arranged between the dividing wheel (127) and the swing arm device (130); the front end of the torsion shaft (126) and the rear end of the swing arm device (130) are arranged on a mounting seat (1211) on the main seat plate (121); one end of the torsion spring (129) is fixed to an end panel (1305) provided on the swing arm device (130) and can be swung with the torsion shaft (126). The arm device (130) rotates together, and the other end is fixed on a fixed plate (1213) provided on the main seat plate (121). The middle lead-out portion of the torsion spring (129) is fixed on a mounting plate provided on the main seat plate (121); the torsion shaft (126) synchronously drives the index wheel (127) and the swing arm device (130) to rotate. When the swing arm device (130) rotates, the torsion angle of the torsion spring (129) is limited by the trigger rod (125). After the trigger rod (125) releases the position limit of the torsion spring (129), the swing arm device (130) synchronously drives the anti-slip iron shoe (132) to flip.

4. The emergency positioning and parking device for a subway shield transport electric locomotive according to claim 3, characterized in that: The indexing wheel (127) comprises a cylindrical small end (1271) and a cylindrical large end (1272); a plurality of limiting holes (1273) are provided on the outer end surface of the cylindrical small end (1271) in a circumferential direction; the trigger rod (125) is inserted into the corresponding limiting hole (1273) to limit the torsion position of the torsion spring (129); and the trigger mechanism (11) drives the trigger rod (125) to be withdrawn from the limiting hole (1273) to realize the flipping of the anti-slip iron shoe (132).

5. The emergency positioning and parking device for a subway shield transport electric locomotive according to claim 3, characterized in that: The swing arm device (130) includes a column (1301), the outer wall of which is connected to a sleeve (1302) via a connecting plate (1303), the sleeve (1302) being fitted with a sleeve rod (1324) provided on the anti-slip iron shoe (132), and the sleeve rod (1324) being slidably provided in the sleeve (1302).

6. The emergency positioning and parking device for a subway shield transport electric locomotive according to claim 5, characterized in that: The inner hole of the sleeve (1302) is set as a square hole (1304), and the corresponding sleeve rod (1324) is set as a square rod adapted to the square hole (1304), and the sleeve rod (1324) is slidably set in the square hole (1304).

7. The emergency positioning and parking device for a subway shield transport electric locomotive according to claim 5, characterized in that: The anti-slip iron shoe (132) includes a hollow upper shell (1321), which is arranged on a long contact plate (1322). The long contact plate (1322) contacts the top of the track (6). An inwardly bent edge (1325) is provided at the tail of the long contact plate (1322). A sleeve sliding rod (131) is provided on the edge (1325) close to the swing arm device (130). The sliding rod (131) includes a bottom column (1323), and the sleeve rod (1324) is provided at the center of the end of the bottom column (1323).

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