Compressed Air Supply Equipment

Abstract

To provide a compressed air supply device in a simple construction, capable of supplying compressed air from the outside to a pneumatic apparatus incorporated in a mobile device.SOLUTION: The compressed air supply device includes: an air supply head 27a provided with an opposite face 27 opposite to a connection face 14; a supply air rod 32 arranged on an air supply head 26a reciprocably between a protrusion position where a protruded face 33 is protruded more than the opposite face 27 and a setback position where the protruded face 33 is set back more than the protrusion position; and an on-off valve 36 for interrupting the communication of a compressed air supply source 41 with an air guide path 37 when the protruded face 33 is away from the connection face 14, and for allowing the communication of the compressed air supply source 41 with an air inflow path 16 via the air guide path 37 when the connection face 14 abuts on the protruded face 33.SELECTED DRAWING: Figure 3B

Description

[Technical field]

[0001] The present invention is incorporated in a mobile device. Air Pressure The present invention relates to a compressed air supply device for supplying compressed air to equipment. [Background technology]

[0002] Work in the factory The self-propelled vehicle (AGV) used to transport the workpieces is equipped with pneumatic devices such as air hands to hold the workpieces. Actuators and pneumatic control devices that control pneumatic actuators In addition, some types of robots are equipped with air pumps to drive the robot arms and air hands, and are used for work robots that move workpieces and perform various tasks such as welding. Actuators and pneumatic control devices that control pneumatic actuators There is a type provided. When using pneumatic actuators or pneumatic control devices on a self-propelled cart, an air compressor or an air tank must be installed to supply compressed air from an external source. Air pressure Actuators and pneumatic control devices When an air tank is installed on a moving device such as a self-propelled cart incorporating the air pressure Actuators and pneumatic control devices When the remaining amount of compressed air in the air tank is low, the compressed air supply device supplies compressed air to the air tank. On the other hand, for a moving device that does not have an air tank, an air pressure Actuators and pneumatic control devices When operating the device, compressed air is supplied by the compressed air supply device. Actuators and pneumatic control devices is supplied directly to

[0003] Patent Document 1 discloses a supply device for supplying electric energy and air energy to an automated guided vehicle in an automobile production factory. The supply device is guided by a guide rail and is movable along the automated guided vehicle, and a synchronization bar and a guide hole are provided in the connector of the supply device. The connector of the automated guided vehicle is provided with a synchronization hole into which the synchronization bar is inserted and a guide bar which is inserted into the guide hole. Furthermore, the connector of the automated guided vehicle is provided with a receiving coupler which receives air energy from a supply coupler of the supply device, and when air energy is supplied from the supply device to the automated guided vehicle, the receiving coupler is inserted into the supply coupler. The receiving coupler is a coupler that is mounted on the automated guided vehicle. Air Pressure It is connected to an accumulator, which is a device.

[0004] Patent Document 2 discloses a work system in which a traveling cart equipped with a work robot is moved to a number of work stations by the guidance of a magnetic tape. An attachment on the traveling cart is provided with a male coupling to which air is supplied and a magnetically attracted terminal connector as a power receiving device, and a slide box provided at the work station so as to be movable along a guide rail is provided with a female coupling for air supply and a magnetically attracted terminal connector as a power supply device. By moving the slide box toward the work cart, the male coupling is inserted into the female coupling, and the air pressure of the work robot mounted on the work cart is supplied to the male coupling. Actuators and pneumatic controls Compressed air is supplied to the equipment. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application Publication No. 63-97791 [Patent Document 2] JP 2015-211997 A Summary of the Invention [Problem to be solved by the invention]

[0006] In the supply device described in Patent Document 1, in order to position the supply coupler and the receiving coupler, a synchronization bar is inserted into a synchronization hole, and then a guide bar is inserted into a guide hole, which makes the positioning mechanism complicated. Furthermore, if a synchronization bar and a guide hole are provided in the connector of the supply device, and a synchronization hole and a guide bar are provided in the connector of the automatic guided vehicle, each connector inevitably becomes large in size.

[0007] In the work system described in Patent Document 2, a traveling robot draws a slide box to its own attachment, thereby connecting the female coupling and the male coupling to supply air and connect signals. In addition, when separating the female coupling and the male coupling, the traveling robot detaches the slide box from the attachment. In this work system, the female and male couplings are connected and separated by robot operation guided by a magnetic tape, and a self-propelled cart that does not have a robot cannot position the attachment and the slide box or detach the slide box by pulling away the magnets. It is also possible to mount an air compressor on the self-propelled cart, but this would increase the weight of the air compressor and drain the battery of the self-propelled cart.

[0008] The object of the present invention is to provide a Air Pressure For the equipment, Without using the battery energy of the mobile device, To provide a compressed air supply device having a simple structure capable of supplying compressed air from the outside. [Means for solving the problem]

[0009] The present invention In one embodiment The compressed air supply device supplies compressed air to pneumatic equipment mounted on a moving device from an inlet of an air inlet passage communicating with the pneumatic equipment, and includes an air supply head attached to a support member and provided with an opposing surface facing the connection surface on which the inlet is provided, an air supply rod arranged on the air supply head so as to be able to reciprocate between a protruding position where its protruding surface protrudes beyond the opposing surface and a retracted position where the protruding surface is retracted from the protruding position, an air guide passage formed in the air supply rod and provided with an outlet on the protruding surface, and an on-off valve that blocks communication between a compressed air supply source and the air guide passage when the protruding surface is away from the connection surface and that connects the compressed air supply source and the air inlet passage via the air guide passage when the connection surface is abutted against the protruding surface. The on-off valve is provided on the air supply rod, and a spring member that applies a pressing force toward the connection surface is provided on the air supply rod. The on-off valve blocks communication between the compressed air supply source and the air guide path when the air supply rod is in the protruding position, and communicates between the compressed air supply source and the air inlet path via the air guide path when the connection surface abuts against the protruding surface and the air supply rod is in the retracted position. The air supply head has a protruding piston that is movably mounted in a cylinder hole formed in the air supply head. The protruding piston is provided with a hollow protruding rod in which the air supply rod is movably incorporated. The protruding piston is formed with a communication hole that communicates between a spring chamber formed in the protruding piston and in which the spring member is accommodated, and an air pressure chamber for forward movement formed in the cylinder hole. The protruding piston drives the air supply rod toward the connection surface. a first air supply rod provided on the forward side of the air supply piston and having a protruding surface protruding from a wall of the air supply head; a second air supply rod provided on the backward side of the air supply piston and having an end surface protruding from a wall of the air supply head; an air guide passage formed through the air supply piston, the first air supply rod, and the second air supply rod, and having an outlet opening to the protruding surface; and an opening / closing valve provided in an air supply passage connected to the second air supply rod and communicating with the air guide passage, for opening and closing the air supply passage. When compressed air is supplied to the forward air pressure chamber and the air supply piston moves forward, the protruding surface of the first air supply rod moves to a protruding position protruding beyond the opposing surface. When compressed air is supplied to the backward air pressure chamber and the air supply piston moves backward, the protruding surface of the first air supply rod moves to a retracted position retracted from the protruding position. When the protruding surface of the first air supply rod moves to the retracted position and the protruding surface is away from the connecting surface, the on-off valve closes the air supply path to block the compressed air supply source and the air guide path. When the protruding surface of the first air supply rod moves to the protruding position and the protruding surface is abutted against the connecting surface, the on-off valve opens the air supply path to communicate between the compressed air supply source and the air guide path. Effect of the Invention

[0010] The air supply head, which supplies compressed air to a moving device from a connection surface, has a cylinder body on which an air supply rod is movably mounted, and the cylinder body is provided with an opposing surface that faces the connection surface. When the air supply rod is moved toward the connection surface, the outlet of the air guide passage formed in the air supply rod is positioned relative to the inlet of the inlet passage. Since the compressed air can be supplied to the moving device by abutting the air supply rod against the connection surface of the moving device, compressed air can be supplied to the moving device by a device with a simple structure. [Brief description of the drawings]

[0011] [Figure 1] FIG. 2 is a perspective view showing an example of a compressed air supply device that supplies compressed air to a track-traveling vehicle, which is a moving device, and pneumatic equipment provided on the track-traveling vehicle. [Figure 2A] FIG. 4 is a front view showing a state in which the track running vehicle approaches the compressed air supply device. [Figure 2B] FIG. 4 is a front view showing a state in which the compressed air supply device is in contact with the track running car. [Figure 3A] 1 is a cross-sectional view showing a state in which an air supply head of a compressed air supply device according to an embodiment faces a track running vehicle. [Figure 3B] 1 is a cross-sectional view showing a state in which an air supply head of a compressed air supply device is abutted against a track running car. FIG. [Figure 4A] FIG. 11 is a cross-sectional view showing an air supply head of a compressed air supply device according to another embodiment. [Figure 4B] 4B is a cross-sectional view showing a state in which compressed air is supplied from the air supply head shown in FIG. 4A to pneumatic equipment of the tracked vehicle. FIG. [Diagram 5] FIG. 11 is a cross-sectional view showing an air supply head of a compressed air supply device according to another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the respective embodiments shown in the drawings, common members are designated by the same reference numerals.

[0013] As shown in FIG. 1, the compressed air supply device 20 is provided on a track vehicle 10 as a moving device, i.e., a moving object. Air Pressure The present invention is applied to supply compressed air to equipment. The track vehicle 10 has wheels 12 that run on rails 11, and the wheels 12 are driven by an electric motor powered by a battery built into the track vehicle 10. As shown in FIG. 2A and FIG. 2B, Air Pressure An air tank 13 as a device is provided in the track vehicle 10, and a pneumatic power supply is provided using compressed air injected into the air tank 13 as a power source. Actuators and pneumatic control devices that control pneumatic actuators But other Air Pressure The equipment is provided on the track vehicle 10. Actuator These include a chuck that grips the workpiece, a cylinder for driving the hand, and a vacuum cup that adsorbs and holds the workpiece. The pneumatic control devices include on-off valves and flow path switching valves. However, air pressure Actuators and pneumatic control devices is omitted in the illustration.

[0014] An air inlet 15 is provided on the connecting surface 14 on the side of the track vehicle 10, and as shown in Figures 2A and 2B, the air inlet 15 is connected to the air inlet 16 provided inside the track vehicle 10. Air Pressure It communicates with an air tank 13 as equipment. A check valve 17 is provided in the air inflow passage 16, and the check valve 17 allows the flow of compressed air from the inflow port 15 toward the air tank 13 and blocks the flow in the opposite direction.

[0015] The compressed air supply device 20 has a pneumatic cylinder 22 attached to a support member 21. A linear guide 23 is movably mounted on the pneumatic cylinder 22, and the linear guide 23 is connected to a rod 24 of the pneumatic cylinder 22. A support plate 25 is attached to the linear guide 23, and an air supply head 26a is attached to the support plate 25. The air supply head 26a can be moved toward and away from the track running vehicle 10 by the pneumatic cylinder 22.

[0016] Air supply head 26a is formed by a pneumatic cylinder, and its tip end face is a flat opposing surface 27 that faces connection surface 14 of track running vehicle 10. Track running vehicle 10 is stopped accurately at a predetermined position on rail 11 by a travel control device so that air inlet 15 faces air outlet provided in air supply head 26a. Therefore, as shown in Figure 2A, when track running vehicle 10 is stopped at the position where air is supplied by air supply head 26a, air supply head 26a is moved toward track running vehicle 10 by driving pneumatic cylinder 22, so that the air outlet of air supply head 26a can be connected to air inlet 15.

[0017] As shown in Fig. 3A and Fig. 3B, the air supply head 26a has a cylinder body 28, a guide hole 31 that opens to the opposing surface 27 is formed in the cylinder body 28, and an air supply rod 32 is attached to the guide hole 31 so as to be reciprocable in the axial direction. As shown in Fig. 3A, the air supply rod 32 moves between a protruding position where the tip surface of the air supply rod 32, i.e., a protruding surface 33, protrudes from the opposing surface 27 and a retracted position where the protruding surface 33 is retracted from the protruding position. A spring chamber 35 that communicates with the guide hole 31 via a radial step surface 34 is formed in the cylinder body 28, and the inner diameter of the spring chamber 35 is larger than the inner diameter of the guide hole 31. An opening / closing valve 36 is formed by a large diameter portion provided at the rear end of the air supply rod 32, and the opening / closing valve 36 moves to open and close within the spring chamber 35.

[0018] An air guide passage 37 is formed in the air supply rod 32 extending in the axial direction, and an outlet 38 of the air guide passage 37 is formed in the protruding surface 33. The spring chamber 35 is connected to a compressed air supply source 41 by an air supply passage 39, and compressed air is supplied to the spring chamber 35. A communication passage 42 is formed between the base end of the air supply rod 32 and the cylinder body 28, and the communication passage 42 connects the spring chamber 35 and the air guide passage 37.

[0019] A compression coil spring 43 serving as a spring member is accommodated in the spring chamber 35, the leading end of the compression coil spring 43 abuts against the end face of the on-off valve 36, i.e., the rear end face of the air supply rod 32, and the rear end of the compression coil spring 43 abuts against the bottom wall of the cylinder body 28. The compression coil spring 43 applies a spring force to the air supply rod 32 in a direction in which the protruding surface 33 protrudes beyond the opposing surface 27. An on-off valve seal member 44 is disposed between the on-off valve 36 and the stepped surface 34, and the on-off valve 36 is pressed against the stepped surface 34 by the compression coil spring 43 via the on-off valve seal member 44, thereby blocking communication between the spring chamber 35 and the air guide passage 37. At this time, the protruding surface 33 of the air supply rod 32 protrudes from the opposing surface 27, as shown in FIG. 3A. On the other hand, when the protruding surface 33 is pressed against the connection surface 14 of the track-running vehicle 10, as shown in FIG. 3B, the opening / closing valve 36 moves backward against the spring force, opening the communication passage 42 and connecting the spring chamber 35 and the air guide passage 37 via the communication passage 42.

[0020] The gap between the outer circumferential surface of air supply rod 32 and the inner circumferential surface of guide hole 31 is sealed by seal member 45 provided on the outer circumferential portion of air supply rod 32. The gap between protruding surface 33 of air supply rod 32 and connecting surface 14 is sealed by abutment seal member 46 provided on the tip of air supply rod 32. Therefore, as shown in FIG. 3B , when protruding surface 33 of air supply rod 32 abuts against connecting surface 14 and moves backward, spring chamber 35 and air guide path 37 are communicated via communication path 42, and the gap between protruding surface 33 and connecting surface 14 is sealed by abutment seal member 46, so that compressed air supplied from compressed air supply source 41 flows in through air inflow path 16. Air Pressure The air is supplied to an air tank 13 as equipment.

[0021] In this way, the on-off valve 36 blocks communication between the compressed air supply source 41 and the air guide passage 37 when the air supply rod 32 is in the extended position, and connects the compressed air supply source 41 to the air inlet passage 16 via the air guide passage 37 when the connection surface 14 abuts against the protruding surface 33 and the air supply rod 32 is in the retracted position.

[0022] In the compressed air supply device 20 equipped with the air supply head 26a, the track running vehicle 10 is stopped close to the air supply head 26a as shown in Fig. 2A. This sets the stopping position so that the inlet 15 of the track running vehicle 10 is coaxial with the outlet 38 of the air supply head 26a. In this state, the linear guide 23 is driven by the pneumatic cylinder 22, and the air supply head 26a is driven forward toward the connecting surface 14 of the track running vehicle 10, and the protruding surface 33 comes into contact with the connecting surface 14.

[0023] 2B and 3B show a state in which the opposing surface 27 of the air supply head 26a is abutted against the connection surface 14 of the track running vehicle 10, and the air supply rod 32 moves backward relative to the cylinder body 28, causing the on-off valve 36 to open the communication passage 42. As a result, compressed air discharged from the compressed air supply source 41 flows from the air guide passage 37 into the air inlet passage 16, and the compressed air is supplied to the air tank 13, which serves as a receiving device provided on the track running vehicle 10. At this time, the spring force of the compression coil spring 43 is applied to the air supply rod 32 as a pressing force toward the connection surface 14, so that the abutment seal member 46 comes into close contact with the connection surface 14, preventing leakage of compressed air from between the connection surface 14 and the protruding surface 33.

[0024] In this manner, the air supply head 26a, which is a pneumatic cylinder provided with the air supply rod 32, forms a compressed air supply device 20 having a simple structure and equipped with the on-off valve 36. The compression coil spring 43 that opens and closes the on-off valve 36 can apply a pressing force for pressing the protruding surface 33 against the connecting surface 14.

[0025] 4A and 4B are cross-sectional views showing air supply head 26b of compressed air supply device 20, which is another embodiment, and in these figures, components that are common to the components constituting air supply head 26a described above are given the same symbols.

[0026] A cylinder hole 51 is formed in the cylinder body 28, and a small-diameter guide hole 52 communicating with the cylinder hole 51 is formed in the cylinder body 28, with the guide hole 52 opening to the opposing surface 27. A protruding piston 53 is reciprocally mounted in the cylinder hole 51, and a hollow protruding rod 54 provided on the protruding piston 53 is slidably inserted into the guide hole 52. Fig. 4A shows a state in which the protruding piston 53 has moved to the rearmost position, and at this time, the tip surface 55 of the protruding rod 54 is substantially flush with the opposing surface 27. On the other hand, Fig. 4B shows a state in which the protruding piston 53 has moved forward, and the protruding piston 53 causes the air supply rod 32 to abut against the connecting surface 14.

[0027] A seal member 56 that contacts the cylinder bore 51 is provided on the protruding piston 53, and an air pressure chamber 57 for forward movement and an air pressure chamber 58 for backward movement are formed by the protruding piston 53 provided in the cylinder bore 51. The air pressure chamber 57 for forward movement is connected to the air supply passage 39a for forward movement, and the air pressure chamber 58 for backward movement is connected to the air supply passage 39b for backward movement. A flow path switching valve 59 is provided between both air supply passages 39a, 39b and the compressed air supply source 41. When compressed air from the compressed air supply source 41 is supplied to the air pressure chamber 58 for backward movement through the flow path switching valve 59, the protruding piston 53 is in the backward limit position as shown in FIG. 4A. On the other hand, when compressed air from the compressed air supply source 41 is supplied to the air pressure chamber 57 for forward movement, the protruding piston 53 is in the forward limit position as shown in FIG. 4B. A seal member 45 a is provided on the inner peripheral surface of the guide hole 52 to seal between the outer peripheral surface of the protruding rod 54 and the inner peripheral surface of the guide hole 52 .

[0028] A guide hole 31 and a spring chamber 35 are formed in the protruding rod 54, the air supply rod 32 is movably incorporated in the guide hole 31 coaxially, and an opening / closing valve 36 provided at the base end of the air supply rod 32 is disposed in the spring chamber 35. The spring chamber 35 communicates with an air pressure chamber 57 for forward movement through a communication hole 60 formed in the protruding piston 53, and the spring chamber 35 communicates with a compressed air supply source 41 via the air pressure chamber 57.

[0029] As shown in Fig. 4A, when the protruding piston 53 is set at the rearmost position and the air supply rod 32 is driven by the spring force so that the protruding surface 33 protrudes beyond the opposing surface 27, the track running vehicle 10 approaches the air supply head 26b and the inlet 15 of the air inlet passage 16 is positioned opposite the outlet 38 of the air guide passage 37 as shown in Fig. 2A. In this state, when compressed air is supplied to the forward air pressure chamber 57, the protruding piston 53 moves forward and the protruding rod 54 is driven to protrude as shown in Fig. 4B. As a result, the tip surface 55 of the protruding rod 54 abuts against the connecting surface 14, and the protruding surface 33 of the air supply rod 32 abuts against the connecting surface 14.

[0030] When the protruding surface 33 abuts against the connecting surface 14 and the air supply rod 32 moves backward, the on-off valve 36 connects the spring chamber 35 and the air guide passage 37 via the communication passage 42. As a result, the compressed air supplied from the compressed air supply source 41 to the forward air pressure chamber 57 is supplied to the air inflow passage 16 via the communication hole 60, the spring chamber 35, the communication passage 42 and the air guide passage 37.

[0031] In this manner, in a configuration in which the air supply rod 32 is incorporated in the protruding rod 54, the protruding and pressing action of the protruding surface 33 against the connecting surface 14 can be performed by the protruding piston 53 instead of the rod 24 of the pneumatic cylinder 22. By arranging the air supply rod 32 coaxially inside the protruding rod 54, this air supply head 26b can drive the air supply rod 32 to protrude by air pressure from the compressed air supply source 41, and can also drive the air supply rod 32 to protrude by air pressure from the compressed air supply source 41 inside the track running vehicle 10. Air Pressure Compressed air can be supplied to the equipment. Therefore, the simple structure achieves miniaturization of the compressed air supply device equipped with the positioning mechanism for the protruding surface 33. However, it is also possible to apply a pressing force to the protruding surface 33 against the connecting surface 14 by driving both the rod 24 of the pneumatic cylinder 22 and the protruding piston 53.

[0032] If a seal member is further attached to the tip surface 55 of the protruding rod 54 , together with the abutting seal member 46 provided on the protruding surface of the air supply rod 32 , air leakage from the connection surface 14 can be prevented.

[0033] FIG. 5 is a cross-sectional view showing an air supply head 26c of a compressed air supply device 20 according to still another embodiment.

[0034] The cylinder body 28 of the air supply head 26c is of a double rod type, and a cylinder hole 61 is formed in the cylinder body 28. A small-diameter guide hole 62 communicating with the cylinder hole 61 is formed in the front end wall of the cylinder body 28, and a small-diameter guide hole 63 communicating with the cylinder hole 61 is formed in the rear end wall of the cylinder body 28, and both guide holes 62, 63 and the cylinder hole 61 are coaxial. An air supply piston 64 is reciprocally mounted in the cylinder hole 61, and an air supply rod slidably mounted in the guide hole 62. (First air supply rod) The air supply rod 32a is provided on the front side of the air supply piston 64 and is slidably mounted in the guide hole 63. (Second air supply rod) The intake piston 64 and the intake rods 32a, 32b are provided on the rear side of the intake piston 64. The intake piston 64 and the intake rods 32a, 32b are formed integrally. A seal member 65 that comes into contact with the cylinder hole 61 is provided on the intake piston 64, a seal member 66 that comes into contact with the intake rod 32a is provided on the cylinder body 28, and a seal member 67 that comes into contact with the intake rod 32b is provided on the cylinder body 28.

[0035] An end face of air intake rod 32a is protruding surface 33, and air guide path 37 passes between end face 68 of air intake rod 32b and protruding surface 33. An air supply path 69 connected to compressed air supply source 41 is connected to air intake rod 32b, and an on-off valve 71 is provided in air supply path 69. On the other hand, when the connecting surface 14 abuts against protruding surface 33, on-off valve 71 opens air supply path 69 to supply compressed air discharged from compressed air supply source 41 to air guide path 37, and closes air supply path 69. Therefore, when protruding surface 33 is away from connecting surface 14, this on-off valve 71 blocks communication between compressed air supply source 41 and air guide path 37. On the other hand, when connecting surface 14 abuts against protruding surface 33, on-off valve 71 closes air supply path 69 to supply compressed air discharged from compressed air supply source 41 to air guide path 37. Air Pressure In order to supply compressed air to the equipment, a compressed air supply source 41 and an air inlet passage 16 are communicated via an air guide passage 37 .

[0036] An air supply piston 64 provided in the cylinder bore 61 forms an air pressure chamber 72 for forward movement and an air pressure chamber 73 for backward movement. The air supply passage 39a for forward movement is connected to the air pressure chamber 72 for forward movement, and the air supply passage 39b for backward movement is connected to the air pressure chamber 73 for backward movement. A flow path switching valve 59 is provided between both air supply passages 39a, 39b and the compressed air supply source 41. When compressed air from the compressed air supply source 41 is supplied to the air pressure chamber 73 for backward movement through the flow path switching valve 59, the air supply piston 64 is in the backward limit position as shown in FIG. 5. On the other hand, when compressed air from the compressed air supply source 41 is supplied to the air pressure chamber 72 for forward movement, the air supply piston 64 is in the forward limit position, and the protruding surface 33 of the air supply rod 32a protrudes forward of the opposing surface 27 from the position shown in FIG. 5.

[0037] In this manner, in the configuration in which the air supply rods 32a, 32b are provided on the air supply piston 64, the protruding action of the protruding surface 33 toward the connecting surface 14 can be performed by the air supply piston 64 instead of the rod 24 of the pneumatic cylinder 22. By arranging the double-rod type air supply piston 64 in the cylinder body 28, this air supply head 26c achieves a compact compressed air supply device equipped with a positioning mechanism for the protruding surface 33 with a simple structure, and the air pressure from the compressed air supply source 41 is used to supply air to the inside of the track running vehicle 10. Air Pressure Compressed air can be supplied to the equipment, and the air supply rod 32 can be driven to protrude, thereby applying a pressing force to the air supply rod 32a toward the connection surface 14. However, it is also possible to drive both the rod 24 of the pneumatic cylinder 22 and the protruding piston 53 to press the protruding surface 33 against the connection surface 14.

[0038] Unlike the above-described embodiment, the abutment seal member 46 that seals between the connection surface 14 and the protruding surface 33 is provided on the connection surface 14. That is, the abutment seal member 46 is provided in an annular groove formed on the connection surface 14. The abutment seal member 46 may also be provided on the connection surface 14 in each of the above-described embodiments of the air supply heads 27a, 27b.

[0039] The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. The compressed air supply device 20 moves the inlet 15 of the track running vehicle 10 to the position of the outlet 38 of the air supply head, Air Pressure In the present embodiment, compressed air is supplied to the equipment, but the present invention is not limited to the track vehicle 10, and can be applied to any moving object equipped with equipment operated by air pressure, as long as the inlet 15 can be positioned at the outlet 38. Air Pressure The equipment includes pneumatic Actuators and pneumatic control devices Not only air tanks to supply compressed air to Actuators and pneumatic control devices of Air Pressure Compressed air may be supplied directly to this device. [Explanation of symbols]

[0040] 10 Tracked Vehicles 11 Rail 12 wheels 13 Air Tank 14 Connection Surface 15 Inlet 16 Air inlet 20 Compressed air supply equipment 21 Support member 26a~26c Air supply head 27 Opposite Surface 28 Cylinder body 31 Guide hole 32 Air supply rod 33 Protruding surface 36 On-off valve 37 Air Guideway 38 Outlet 39 Air supply line 41 Compressed air supply source 42 Communication path 53 Protruding piston 54 Protruding rod 55 Tip surface 64 Air supply piston 69 Air supply line 71 On-off valve

Claims

1. A compressed air supply device that supplies compressed air to a pneumatic device mounted on a moving device from an inlet of an air inflow passage communicating with the pneumatic device, an air supply head that is attached to a support member and has an opposing surface that faces the connection surface on which the inlet is provided; an air supply rod disposed on the air supply head so as to be capable of reciprocating between a protruding position where a protruding surface protrudes beyond the opposing surface and a retracted position where the protruding surface retracts from the protruding position; an air guide passage formed in the air supply rod and having an outlet on the protruding surface; an on-off valve that blocks communication between the compressed air supply source and the air guide passage when the protruding surface is separated from the connecting surface and that connects the compressed air supply source to the air inlet passage via the air guide passage when the connecting surface is abutted against the protruding surface; having The opening / closing valve is provided on the air supply rod, a spring member for applying a pressing force toward the connection surface to the air supply rod is provided on the air supply rod; the on-off valve blocks communication between the compressed air supply source and the air guide passage when the air supply rod is in the protruding position, and communicates between the compressed air supply source and the air inlet passage via the air guide passage when the connection surface abuts against the protruding surface and the air supply rod is in the retracted position, a protruding piston movably mounted in a cylinder hole formed in the air supply head; a hollow protruding rod in which the air supply rod is movably mounted is provided in the protruding piston; a communication hole is formed in the protruding piston, the communication hole communicating a spring chamber formed in the protruding piston and accommodating the spring member with an air pressure chamber for forward movement formed in the cylinder bore; The protruding piston drives the air supply rod toward the connection surface. Compressed air supply equipment.

2. A compressed air supply device that supplies compressed air to a pneumatic device mounted on a moving device from an inlet of an air inflow passage communicating with the pneumatic device, an air supply head that is attached to a support member and has an opposing surface that faces the connection surface on which the inlet is provided; an air supply piston movably mounted in a cylinder hole formed in the air supply head and dividing an air pressure chamber for forward movement and an air pressure chamber for backward movement inside the cylinder hole; a first air supply rod provided on a forward movement side of the air supply piston and having a protruding surface protruding from a wall portion of the air supply head; a second air supply rod provided on the retreating side of the air supply piston and having an end face protruding from a wall portion of the air supply head; an air guide passage formed through the air supply piston, the first air supply rod, and the second air supply rod and including an air outlet opening on the protruding surface; an on-off valve that is connected to the second air supply rod and is provided in an air supply passage that communicates with the air guide passage, and that opens and closes the air supply passage; having When compressed air is supplied to the forward air pressure chamber and the air supply piston moves forward, the protruding surface of the first air supply rod moves to a protruding position protruding beyond the opposing surface, When compressed air is supplied to the retraction air pressure chamber and the air supply piston moves to the retraction side, the protruding surface of the first air supply rod moves to a retracted position which is further retracted than the protruding position, The on-off valve is When the protruding surface of the first air supply rod moves to the retreated position and the protruding surface is separated from the connection surface, the air supply path is closed to cut off the compressed air supply source and the air guide path; When the protruding surface of the first air supply rod moves to the protruding position and the protruding surface is abutted against the connection surface, the air supply path is opened to communicate between the compressed air supply source and the air guide path. Compressed air supply equipment.

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