Inner pick arm, inner pick arm assembly and double-pillow tamping device

Abstract

The present invention discloses an inner pick arm, an inner pick arm assembly and a double-sleeper tamping device, and relates to the technical field of large-scale railway maintenance machinery. The inner pick arm includes a transmission connection part and a tamping pick connection part, the transmission connection part extends obliquely toward a first direction relative to the tamping pick connection part, and a clearance fitting part is provided on the side of the tamping pick connection part away from the first direction. A first convex part adjacent to the clearance fitting part is formed on the tamping pick connection part, and the width of the clearance fitting part corresponds to the width of the first convex part. The inner pick arm is reasonably designed and simple in structure. By providing the clearance fitting part, the inner pick arms arranged in pairs can cooperate without interfering with each other, laying a foundation for installing a straight tamping pick, and having strong practicality.

Description

Technical Field

[0001] The invention relates to the technical field of large-scale railway track maintenance machinery, and in particular to an inner pick arm, an inner pick arm assembly and a double-sleeper tamping device. Background Art

[0002] The tamping device is the main working device of the railway large-scale track maintenance machinery tamping vehicle. It is used to tamp the ballast at the bottom of the rails on both sides to improve the density of the ballast at the bottom of the rails, and cooperate with the track lifting and shifting device to eliminate the unevenness of the track and enhance the stability of the track.

[0003] Many countries and regions in the world use meter-gauge lines, which are quite different from standard lines in terms of track gauge, sleeper configuration, and locomotive and vehicle limits.

[0004] The existing double-sleeper tamping device for meter-gauge lines can meet the needs of meter-gauge line operations. However, due to the space limitation of the inner tamping pick of the existing tamping device, in order to avoid collision of the tamping picks, the inner tamping pick is designed as a curved pick with a short length. Due to the bending stress on the inner tamping pick, it is easy to break and has a short service life.

[0005] Although the outer tamping pick is a straight pick, in order to match the inner tamping pick, the diameter of the pick body is relatively small, the length is shorter, and the palm of the pick is welded with wear-resistant alloy, making it a welded tamping pick.

[0006] In addition, with the widespread use of cemented carbide ramming picks, the wear resistance of the pick palm has been greatly improved by brazing a cemented carbide wear-resistant layer on the pick palm. Therefore, the ramming pick body and the pick palm are required to have the same lifespan, while the pick body structure of the bent pick easily causes the pick body to fail earlier than the pick palm. Summary of the invention

[0007] The object of the present invention is to provide an inner pick arm to solve the ramming pick collision phenomenon caused by space limitation of the ramming pick connected to the inner pick arm.

[0008] The embodiment of the present invention is achieved as follows:

[0009] Based on the above purpose, an embodiment of the present invention provides an inner pick arm, comprising a transmission connection part and a tamping pick connection part connected to each other, wherein the transmission connection part is inclined toward a first direction relative to the tamping pick connection part, and a yielding matching part is provided on a side of the tamping pick connection part away from the first direction;

[0010] A first protrusion is formed on the tamping pick connecting portion and is arranged adjacent to the making way matching portion, and the making way matching portion matches the first protrusion.

[0011] In addition, the inner pick arm provided according to the embodiment of the present invention may also have the following additional technical features:

[0012] In an optional embodiment of the present invention, the tamping pick connecting portion further includes a second convex portion, and the second convex portion and the first convex portion are respectively located on both sides of the yielding matching portion;

[0013] A tamping pick mounting hole is provided on the bottom surface of the tamping pick connecting portion away from the transmission connecting portion. The first mounting hole corresponds to the first protrusion, and the second mounting hole corresponds to the second protrusion.

[0014] In an optional embodiment of the present invention, the transmission connection portion includes a first ear and a second ear that are spaced apart, a symmetry center line of the first ear and the second ear and a center line of the yielding mating portion have a first offset distance, and the symmetry center line is closer to the first protrusion than the second protrusion.

[0015] In an optional embodiment of the present invention, the first offset distance is one quarter to one third of the distance between the inner side wall of the first support ear and the inner side wall of the second support ear.

[0016] In an optional embodiment of the present invention, the clearance fitting portion is a through groove, and the depth of the through groove gradually increases from an end of the tamping pick connection portion close to the transmission connection portion to an end away from the transmission connection portion.

[0017] In an optional embodiment of the present invention, the easing matching portion includes a first inclined surface, a second inclined surface and a third inclined surface, the first inclined surface is close to the first convex portion and is arranged opposite to the third inclined surface, and the second inclined surface is the bottom of the through groove;

[0018] The first inclined surface, the second inclined surface and the third inclined surface respectively form acute angles with the bottom surface of the tamping pick connecting portion facing away from the transmission connecting portion.

[0019] In an optional embodiment of the present invention, the acute angle is 80° to 90°.

[0020] In an optional embodiment of the present invention, a side wall of the first protrusion facing away from the yielding mating portion is provided with a fourth inclined surface, and the fourth inclined surface takes the center line of the first mounting hole as the symmetry center and is mirror-symmetrical to the first inclined surface.

[0021] In an optional embodiment of the present invention, the transmission connection portion includes a cylinder connection section and a box connection section, and the box connection section is located between the cylinder connection section and the ramming pick connection portion;

[0022] The oil cylinder connecting section is provided with a connecting rod pin hole, and the box connecting section is provided with an inner pick arm pin hole.

[0023] The present invention also provides an inner pick arm assembly, comprising two inner pick arms, namely a first inner pick arm and a second inner pick arm, wherein the first protrusion of the first inner pick arm can cooperate with the yielding fitting part of the second inner pick arm, and at the same time, the first protrusion of the second inner pick arm can cooperate with the yielding fitting part of the first inner pick arm.

[0024] In an optional embodiment of the present invention, the tamping pick connecting portion further includes a second convex portion, the second convex portion and the first convex portion are respectively located on both sides of the yielding matching portion, and a tamping pick mounting hole is provided on the bottom surface of the tamping pick connecting portion away from the transmission connecting portion, the first mounting hole corresponds to the first convex portion, and the second mounting hole corresponds to the second convex portion;

[0025] The symmetric center line of the first mounting hole and the second mounting hole of the first inner pick arm coincides with the center line of the first mounting hole of the second inner pick arm, and the symmetric center line of the first mounting hole and the second mounting hole of the second inner pick arm coincides with the center line of the first mounting hole of the first inner pick arm.

[0026] The present invention also provides a double-sleeper tamping device, including an inner pick arm assembly, or an inner pick arm.

[0027] In an optional embodiment of the present invention, the double-sleeper tamping device further comprises a box body, a power mechanism, an outer pick arm and a tamping pick;

[0028] The outer pick arm and the inner pick arm are connected to the box body through the power mechanism, the ramming pick is fixedly arranged at one end of the outer pick arm and the inner pick arm away from the power mechanism, and the outer pick arm is located on both sides of the inner pick arm.

[0029] In an optional embodiment of the present invention, the power mechanism includes a transmission assembly, a first drive member and a second drive member, the transmission assembly is arranged in the box, the outer pick arm is connected to the transmission assembly through the first drive member and the second drive member in sequence, and the inner pick arm is connected to the transmission assembly through the second drive member.

[0030] In an optional embodiment of the present invention, the number of the inner pick arms and the number of the outer pick arms are both four, the inner pick arms cooperate with each other in pairs to form a first inner pick arm group and a second inner pick arm group, and the outer pick arms cooperate with each other in pairs to form a first outer pick arm group and a second outer pick arm group;

[0031] The first inner pick arm group and the first outer pick arm group are both arranged on one side of the box body along the width direction, the second inner pick arm group and the second outer pick arm group are both arranged on the other side of the box body along the width direction, and the first outer pick arm group is located on both sides of the first inner pick arm group, and the second outer pick arm group is located on both sides of the second inner pick arm group.

[0032] The beneficial effects of the embodiment of the present invention are: reasonable design, reliable performance, long life of the tamping pick, and applicable to meter-gauge line operations. The tamping pick connecting parts of the first inner pick arm group and the second inner pick arm group are cross-arranged, making it possible to install straight tamping picks on the inner pick arm and the outer pick arm, and the connection with the tamping pick adopts a straight handle clamping method, the overall structure is reasonable and compact, the life of the tamping pick and the reliability of the tamping device are improved, and the operation requirements of the meter-gauge line are better met. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic diagram of the structure of the inner pick arm provided in Example 1 of the present invention;

[0035] Figure 2 This is a schematic diagram of the inner pickaxe arm from the first perspective;

[0036] Figure 3 This is a schematic diagram of the inner pickaxe arm from the second perspective;

[0037] Figure 4 A schematic diagram of the coordination of the inner pick arm assembly provided in Example 2 from a first viewing angle;

[0038] Figure 5 It is a schematic diagram of the coordination of the inner pick-arm assembly from the second perspective;

[0039] Figure 6 A half-section schematic diagram of a double-sleeper tamping device provided in Example 3 from a first viewing angle;

[0040] Figure 7 A half-section schematic diagram of the double-sleeper tamping device from a second viewing angle;

[0041] Figure 8 A half-section schematic diagram of a double-sleeper tamping device from a third viewing angle;

[0042] Fig. 9 This is a schematic diagram of the outer pickaxe arm from the first perspective;

[0043] Fig.10 It is a schematic diagram of the second perspective of the outer pickaxe arm;

[0044] Fig.11 It is a schematic diagram of the outer pickaxe arm from a third-person perspective;

[0045] Fig.12 This is a schematic diagram of the coordinated operation of two double-sleeper tamping devices.

[0046] Icons: 100-inner pick arm; 10-first direction; 11-ramming pick connection; 12-allowing matching part; 122-first inclined plane; 124-second inclined plane; 126-third inclined plane; 13-first convex part; 132-first mounting hole; 138-fourth inclined plane; 15-second convex part; 152-second mounting hole; 16-transmission connection part; 162-first support ear; 165-second support ear; 166-oil cylinder connection Connecting section; 168-box connecting section; 18-first offset distance; 19-inner pick arm assembly; 192-first inner pick arm; 195-second inner pick arm; 200-double-sleeper tamping device; 20-box; 21-outer pick arm; 215-tamping pick mounting hole; 22-tamping pick; 23-transmission assembly; 24-first drive member; 25-second drive member; 26-first inner pick arm group; 27-second inner pick arm group; 30-rail. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0050] In the description of the present invention, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0053] Example 1

[0054] Figure 1 The schematic diagram of the structure of the inner pick arm 100 provided in this embodiment is as follows: Figure 1 shown.

[0055] The inner pick arm 100 provided in this embodiment 1 includes a transmission connection part 16 and a tamping pick connection part 11 with a yielding matching part 12, so that the two inner pick arms 100 can match back to back and have a reasonable lateral arrangement. It is installed on a double-sleeper tamping device 200 to provide a connecting part for the tamping pick 22 to meet the operating requirements of the meter-gauge line.

[0056] The specific structures of the various components of the inner pick arm 100 and the corresponding relationships therebetween are described in detail below.

[0057] Figure 2 is a schematic diagram of the inner pick arm 100 from a first-person perspective, Figure 3 is a schematic diagram of the inner pick arm 100 from a second viewing angle, Figure 4 For a schematic diagram of the cooperation of the two inner pick arms 100, please refer to Figure 2 , Figure 3 and Figure 4 shown.

[0058] The inner pick arm 100 includes a transmission connection part 16 and a tamping pick connection part 11 which are connected to each other. The tamping pick connection part 11 is used to be fixedly connected to the tamping pick 22, and the transmission connection part 16 is used to be connected to a transmission member to transmit power to the tamping pick 22, so as to perform meter-gauge line operations through the tamping pick 22.

[0059] Specifically, in Figure 2 In the viewing angle, the horizontal left direction is the first direction 10, and the transmission connection part 16 is inclined toward the first direction 10 relative to the tamping pick connection part 11, that is, the transmission connection part 16 is inclined to the left side with the center line of the length direction of the tamping pick connection part 11 as the reference. A clearance matching part 12 is provided on the side of the tamping pick connection part 11 away from the first direction 10.

[0060] The paving matching part 12 is a concave structure, or it can be said that the paving matching part 12 is a through oblique groove, so that convexities are formed on both sides. That is, a first convex part 13 adjacent to the paving matching part 12 is formed on the tamping pick connecting part 11, please refer to Figure 4When the two inner pick arms 100 are arranged back to back, they form the first inner pick arm 192 and the second inner pick arm 195 respectively. The tamping pick connecting part 11 of the first inner pick arm 192 can cooperate with the tamping pick connecting part 11 of the second inner pick arm 195, so that the yielding matching part 12 of the first inner pick arm 192 cooperates with the first protrusion 13 of the second inner pick arm 195, and the yielding matching part 12 of the second inner pick arm 195 cooperates with the first protrusion 13 of the first inner pick arm 192.

[0061] Therefore, the width of the mating portion 12 provided on the inner pick arm 100 should correspond to the width of the first protrusion 13 so as to meet the mating requirements.

[0062] Specifically, the tamping pick connecting part 11 also includes a second protrusion 15, and the second protrusion 15 and the first protrusion 13 are respectively located on both sides of the giving way matching part 12, that is, the giving way matching part 12 separates the side of the tamping pick connecting part 11 away from the first direction 10 into the first protrusion 13 and the second protrusion 15. When the two inner pick arms 100 cooperate, the tamping pick connecting part 11 is facilitated to cooperate, so that after it is installed on the double-sleeper tamping device 200, the overall structure is compact and space-saving.

[0063] A tamping pick mounting hole is provided on the bottom surface of the tamping pick connecting portion 11 facing away from the transmission connecting portion 16, and the number of the tamping pick mounting holes is the same as the number of the first protrusion 13 and the second protrusion 15, and the first mounting hole 132 corresponds to the first protrusion 13, and the second mounting hole 152 corresponds to the second protrusion 15, so that the number of tamping picks 22 is reasonably set and the position space of the tamping pick connecting portion 11 is fully utilized.

[0064] Optionally, the tamping pick connecting portion 11 is a substantially symmetrical structure, so that the symmetry center of the yielding matching portion 12 coincides with the symmetry center line of the first mounting hole 132 and the second mounting hole 152 .

[0065] Optionally, in order to make the transmission connection part 16 correspond to each other after the paired inner pick arms 100 are arranged on the double-pillar tamping device 200, preferably, they are located in the same plane. Therefore, the transmission connection part 16 is offset as a whole relative to the tamping pick connection part 11, please refer to Figure 3 shown.

[0066] exist Figure 3 From a viewing angle, the transmission connection portion 16 as a whole is offset relative to the tamping pick connection portion 11 in a direction toward the first protrusion 13 .

[0067] Specifically, the transmission connection portion 16 is a symmetrical structure, including a first ear 162 and a second ear 165 that are spaced apart. The symmetry center line of the first ear 162 and the second ear 165 has a first offset distance 18 with the center line of the yielding mating portion 12 , and the symmetry center line is closer to the first protrusion 13 than the second protrusion 15 .

[0068] It can be understood that when the first ear 162 and the second ear 165 of the transmission connection part 16 are not axially symmetrical figures, the middle position of the spacing distance between the inner wall of the first ear 162 and the inner wall of the second ear 165 is selected, and there is a first offset distance 18 between it and the center line of the mating part 12.

[0069] Optionally, the first offset distance 18 is between one quarter and one third of the distance f between the inner side wall of the first ear 162 and the inner side wall of the second ear 165. Figure 4 The inner pick arms 100 arranged in pairs are respectively the first inner pick arm 192 and the second inner pick arm 195, the first ear 162 of the first inner pick arm 192 and the second ear 165 of the second inner pick arm 195 are aligned, and the second ear 165 of the first inner pick arm 192 and the first ear 162 of the second inner pick arm 195 are aligned.

[0070] In this embodiment, the first offset distance 18 is approximately one quarter of the spacing distance f between the inner side wall of the first ear 162 and the inner side wall of the second ear 165 .

[0071] Please continue to refer to Figure 1 and Figure 2 As shown, from one end of the tamping pick connecting portion 11 close to the transmission connecting portion 16 to the other end away from the transmission connecting portion 16, the mating portion 12 is inclined inwardly and is a through groove with a gradually increasing depth.

[0072] That is, the bottom wall of the groove of the matching portion 12 is an inclined surface, so that the depth of the through groove gradually increases. Figure 2 From the perspective of angle, the depth of the opening of the mating portion 12 increases gradually from top to bottom, and the groove depth b at the bottom of the mating portion 12 is approximately equal to one-fifth of the total depth g of the bottom, and the bottom groove width c is approximately equal to one-half of the total width h of the bottom.

[0073] For details, please refer to Figure 3 As shown, the yielding mating portion 12 includes a first inclined surface 122, a second inclined surface 124 and a third inclined surface 126. The inclined surface close to the first protrusion 13 is the first inclined surface 122, and the first inclined surface 122 and the third inclined surface 126 are arranged opposite to each other. The second inclined surface 124 is located between the first inclined surface 122 and the third inclined surface 126 and is the bottom of the through groove.

[0074] Optionally, the first bevel 122 , the second bevel 124 and the third bevel 126 respectively form an acute angle α with the bottom surface of the tamping pick connecting portion 11 away from the transmission connecting portion 16 , so that the yielding matching portion 12 presents a structure with a small upper end and a large lower end.

[0075] It can be understood that the acute angle formed by the first inclined surface 122 and the bottom surface of the tamping pick connection part 11 away from the transmission connection part 16 is a first acute angle, the acute angle formed by the second inclined surface 124 and the bottom surface of the tamping pick connection part 11 away from the transmission connection part 16 is a second acute angle, and the acute angle formed by the third inclined surface 126 and the bottom surface of the tamping pick connection part 11 away from the transmission connection part 16 is a third acute angle. The angles of the first acute angle, the second acute angle and the third acute angle may be the same or different, and there is no specific limitation. Optionally, the angle range of the above three acute angles may be between 80° and 90°.

[0076] In this embodiment, the first acute angle and the third acute angle are the same, so that the mating portion 12 forms an axisymmetric shape.

[0077] Please continue to refer to Figure 3 and Figure 4 As shown, a fourth slope 138 is also provided on the side wall of the first protrusion 13 away from the yielding matching portion 12. The fourth slope 138 plays an anti-interference role. When the tamping pick connecting portion 11 of the first inner pick arm 100 and the tamping pick connecting portion 11 of the second inner pick arm 100 are matched, the fourth slope 138 can cooperate with the second protrusion 15 matched therewith to achieve the anti-interference effect.

[0078] Optionally, with the center line of the first mounting hole 132 as the center of symmetry, the fourth inclined surface 138 and the first inclined surface 122 form a mirror-symmetrical pattern.

[0079] It is understandable that the fourth slope 138 can be asymmetrical with the first slope 122, as long as the fourth slope 138 is set on the side wall of the first protrusion 13 away from the mating portion 12, and the fourth slope 138 can not interfere with the second protrusion 15 of the other inner pick arm 100 that cooperates with it, and no specific structure is required.

[0080] Please continue to refer to Figure 1 As shown, the transmission connection part 16 includes a cylinder connection section 166 and a box connection section 168. The box connection section 168 is located between the cylinder connection section 166 and the tamping pick connection part 11. The box connection section 168 is used to be hinged with the box 20 of the double-track tamping device so that the inner pick arm 100 can rotate relative to the box 20. The cylinder connection section 166 is used to be connected to the power mechanism of the double-sleeper tamping device 200. Under the action of the power mechanism, the inner pick arm 100 drives the tamping pick 22 to move relative to the box 20.

[0081] Optionally, the cylinder connecting section 166 is provided with a connecting rod pin hole, which is connected to the power mechanism through a connecting piece passing through the connecting pin hole, and the box connecting section 168 is provided with an inner pick arm pin hole, which is connected to the box 20 through a connecting piece passing through the inner pick arm pin hole.

[0082] The inner pick arm 100 provided in Embodiment 1 of the present invention has the following beneficial effects:

[0083] The design is reasonable and the structure is simple. By providing a yielding and matching part 12, the inner pick arms 100 arranged in pairs can be matched. Relative to the working clamping direction, the yielding and matching part 12 of the first inner pick arm 192 can just accommodate the first protrusion 13 of the second inner pick arm 195, and each protrusion of the inner pick arm 100 can be installed with a tamping pick 22, which cooperate with each other without interfering with each other, laying the foundation for installing the straight tamping pick 22, and is highly practical.

[0084] Example 2

[0085] This embodiment 2 provides an inner pick arm assembly 19, including two inner pick arms 100 provided in embodiment 1, the two inner pick arms 100 can be arranged in coordination, and as an assembly, can be installed in pairs on a double-sleeper tamping device 200, as described below:

[0086] Figure 4 A schematic diagram of the first perspective of the cooperation of the inner pick arm assembly 19, Figure 5 For a second perspective diagram of the inner pick arm assembly 19, please refer to Figure 4 and Figure 5 shown.

[0087] Specifically, the two inner pick arms 100 are respectively the first inner pick arm 192 and the second inner pick arm 195, which are arranged back to back so that the extension direction of the transmission connection part 16 of the first inner pick arm 192 is opposite to the extension direction of the transmission connection part 16 of the second inner pick arm 195.

[0088] In this embodiment, the first protrusion 13 of the first inner pick arm 192 can cooperate with the yielding matching part 12 of the second inner pick arm 195. At the same time, the first protrusion 13 of the second inner pick arm 195 can cooperate with the yielding matching part 12 of the first inner pick arm 192, so that it occupies less space and has a compact overall structure. During operation, the first inner pick arm 192 and the second inner pick arm 195 rotate relative to the box body 20 or rotate back to back, and the matching state of the first protrusion 13 and the yielding matching part 12 is an extreme state of its rotation.

[0089] Optionally, the tamping pick connecting part 11 also includes a second protrusion 15, and the second protrusion 15 and the first protrusion 13 are respectively located on both sides of the yielding matching part 12, and a tamping pick mounting hole is opened on the bottom surface of the tamping pick connecting part 11 away from the transmission connecting part 16, and the first mounting hole 132 corresponds to the first protrusion 13, and the second mounting hole 152 corresponds to the second protrusion 15.

[0090] The symmetrical center line of the first mounting hole 132 and the second mounting hole 152 of the first inner pick arm 192 coincides with the center line of the first mounting hole 132 of the second inner pick arm 195, and the symmetrical center line of the first mounting hole 132 and the second mounting hole 152 of the second inner pick arm 195 coincides with the center line of the first mounting hole 132 of the first inner pick arm 192.

[0091] The matching parts of the first inner pick arm 192 and the second inner pick arm 195 are similar to an S-shaped structure, and the yielding matching part 12 of the first inner pick arm 192 just accommodates the first convex part 13 of the second inner pick arm 195, and the yielding matching part 12 of the second inner pick arm 195 also just accommodates the first convex part 13 of the first inner pick arm 192. Since the intersection position of the first inner pick arm 192 and the second inner pick arm 195 is the extreme position, the two are cross-arranged without interference, the overall structure is compact, the layout is reasonable, and space is saved.

[0092] Example 3

[0093] This embodiment 3 provides a double-sleeper tamping device 200 for operating on a meter-gauge line, including the inner pick arm assembly 19 provided in embodiment 2, or the inner pick arm 100 provided in embodiment 1.

[0094] Figure 6 It is a half-section schematic diagram of the double-sleeper tamping device 200 from a first perspective, Figure 7 is a half-section schematic diagram of the double-sleeper tamping device 200 from a second viewing angle, Figure 8 This is a schematic diagram of the double-sleeper tamping device 200 from a third perspective, please refer to Figure 6 , Figure 7 and Figure 8 The specific instructions are as follows:

[0095] The double-sleeper tamping device 200 includes a box body 20, a power mechanism, an outer pick arm 21, an inner pick arm 100 and a tamping pick 22, wherein the outer pick arm 21 and the inner pick arm 100 are connected to the box body 20 through the power mechanism, the tamping pick 22 is fixedly arranged at one end of the outer pick arm 21 and the inner pick arm 100 away from the power mechanism, and the outer pick arm 21 is located on both sides of the inner pick arm 100.

[0096] Specifically, the power mechanism includes a transmission assembly 23, a first driving member 24 and a second driving member 25. The transmission assembly 23 is arranged in the box body 20. The outer pick arm 21 is connected to the transmission assembly 23 through the first driving member 24 and the second driving member 25 in turn, and the inner pick arm 100 is connected to the transmission assembly 23 through the second driving member 25.

[0097] Optionally, the ears of the first driving member 24 and the second driving member 25 are hinged, and the second driving member 25 is installed on the eccentric vibration shaft of the transmission assembly 23. The power is first transmitted to the second driving member 25 through the eccentric vibration shaft, and then transmitted to the first driving member 24, wherein the power of the inner tamping pick 22 is transmitted to the tamping pick 22 through the second driving member 25 and the inner pick arm 100 in sequence, and the power of the outer tamping pick 22 is transmitted to the tamping pick 22 through the second driving member 25, the first driving member 24 and the outer pick arm 21 in sequence.

[0098] The two back-to-back inner pick arms 100 cooperate with each other, and the first inner pick arm 192 cooperates with its opposite outer pick arm 21 to achieve clamping operation, and the second inner pick arm 195 cooperates with its opposite outer pick arm 21 to achieve clamping operation.

[0099] Specifically, the double-sleeper tamping device 200 is basically a left-right symmetrical and front-back symmetrical structure, with the box body 20 located in the middle position, the outer pick arm 21 and the inner pick arm 100 located on both sides of the front-back direction, and the outer pick arm 21 located on the outside in the left-right direction, and the inner pick arm 100 located on the inside in the left-right direction.

[0100] A tamping pick 22 is correspondingly installed at the bottom of each outer pick arm 21 and each inner pick arm 100, which can respectively operate to tamp the ballast at the bottom of the sleeper on both sides of the rail 30, thereby improving the density of the ballast at the bottom of the sleeper. Each outer pick arm 21 cooperates with the corresponding inner pick arm 100 to achieve the clamping operation of the ballast.

[0101] In this embodiment, the double-sleeper tamping device 200 includes four inner pick arms 100 and four outer pick arms 21. The inner pick arms 100 cooperate with each other to form a first inner pick arm group 26 and a second inner pick arm group 27. The box body 20 has beams on both sides along the thickness direction, and two inner pick arms 100 are installed on each beam, forming the same inner pick arm group.

[0102] Specifically, the tamping pick 22 is a straight pick, and the two tamping picks 22 installed in the first inner pick arm group 26 and the second inner pick arm group 27 are arranged crosswise, and any position of the tamping pick 22 body will not interfere with the parts of other tamping picks 22. In this embodiment, the tamping picks 22 installed in the first inner pick arm group 26 and the second inner pick arm group 27 have a downward insertion angle of about 5°, which is basically vertical downward insertion, and the force bearing condition is good; the handle of the tamping pick 22 is cylindrical, with a large overall size and high strength; the connection between the tamping pick 22 and the pick arm adopts a straight handle clamping method, which is convenient for installation and disassembly.

[0103] In addition, the cross arrangement of the tamping picks 22 has a compact overall structure and saves space. When inserted, the distance between the tips of the two inner picks can meet the tamping operation on meter-gauge lines with a small sleeper spacing, thereby improving the applicability of the tamping device.

[0104] like Figure 8As shown, the two inner pick arms 100 located below the box body 20 are the first inner pick arm group 26, and the two inner pick arms 100 located above the box body 20 are the second inner pick arm group 27. In the first inner pick arm group 26, the inner pick arm 100 located on the left is offset inward relative to the inner pick arm 100 on the right, so that the inner pick arm 100 on the right is relatively outward, thereby realizing the cross arrangement of the tamping pick connecting portion 11. Similarly, in the second inner pick arm group 27, the inner pick arm 100 located on the left is offset outward relative to the inner pick arm 100 on the right, so that the inner pick arm 100 on the right is relatively inward, thereby realizing the cross arrangement of the tamping pick connecting portion 11.

[0105] The symmetric center line of the first mounting hole 132 and the second mounting hole 152 of the left inner pick arm 100 in the first inner pick arm group 26 coincides with the center line of the first mounting hole 132 of the right inner pick arm 100. The symmetric center line of the first mounting hole 132 and the second mounting hole 152 of the right inner pick arm 100 in the first inner pick arm group 26 coincides with the center line of the first mounting hole 132 of the left inner pick arm 100, and the tamping pick connecting parts 11 of the left inner pick arm 100 and the right inner pick arm 100 are arranged crosswise.

[0106] Optional, see Figure 5 As shown, the distance between the center line of the mounting hole of the left inner pick arm 100 and the center line of the mounting hole of the right inner pick arm 100 is d, and d is approximately one third of the distance e between the mounting holes of the two inner pick arms 100 on the box body 20.

[0107] Fig. 9 is a schematic diagram of the outer pickaxe arm 21 from a first-view perspective, Fig.10 is a schematic diagram of the outer pickaxe arm 21 from a second viewing angle, Fig.11 This is a schematic diagram of the outer pickaxe arm 21 from a third viewing angle, please refer to Fig. 9 , Fig.10 and Fig.11 shown.

[0108] The outer pick arm 21 is also a symmetrical structure, and cooperates with each other to form a first outer pick arm group and a second outer pick arm group. The first inner pick arm group 26 and the first outer pick arm group are both arranged on one side of the box body 20 along the thickness direction, and the second inner pick arm group 27 and the second outer pick arm group are both arranged on the other side of the box body 20 along the thickness direction, and the first outer pick arm group is located on both sides of the first inner pick arm group 26, and the second outer pick arm group is located on both sides of the second inner pick arm group 27.

[0109] Specifically, a connecting rod pin hole is provided at one end of the outer pick arm 21, a pick arm pin hole is provided in the middle, and a tamping pick installation hole 215 is provided at the bottom. A connecting piece is adopted to pass through the connecting rod pin hole to connect the outer pick arm 21 with the first driving member 24, and the outer pick arm 21 is installed on the crossbeam of the box body 20 by passing the pick arm pin through the pick arm pin hole. There are two tamping pick installation holes 215 provided at the bottom of the outer pick arm 21, both of which are cylindrical tamping pick installation holes, and two clamping grooves are provided on the side. The outer pick arm 21 can be installed with a cylindrical straight-handled tamping pick. The outer pick arm 21 is the same as the tamping pick 22 installed on the inner pick arm 100. The connection between the outer pick arm 21 and the tamping pick 22 adopts a straight-handled clamping method. The tamping pick 22 has high strength, a small insertion angle, good stress condition, and is easy to install and disassemble.

[0110] Optionally, the first driving member 24 and the second driving member 25 are both oil cylinders, and the tamping pick connecting parts 11 of the first inner pick arm group 26 installed on the box body 20 are partially crossed. Relative to the first direction 10, that is, the clamping direction, the yielding matching part 12 on the back of each inner pick arm 100 can just accommodate the first convex part 13 on the back of another inner pick arm 100, and a tamping pick 22 can be installed on the convex part of the tamping pick connecting part 11 of each inner pick arm 100. Therefore, the four convex parts of the two inner pick arms 100 are cross-arranged without interfering with each other, which lays a foundation for installing the straight tamping pick 22.

[0111] At the same time, since the yielding fitting part 12 is a through oblique groove, the bottom depth dimension is greater than the upper depth dimension, which ensures that the second driving member 25 can telescopically move and drive the inner pick arm 100 and the tamping pick 22 to swing throughout the entire process without interference of the inner pick arm 100.

[0112] In this embodiment, the tamping pick 22 installed on the inner pick arm 100 is a straight pick, and the bottom surface of the inner pick arm 100 is basically parallel to the rail surface. Therefore, the two tamping picks 22 installed on the left inner pick arm 100 and the two tamping picks 22 installed on the right inner pick arm 100 are arranged crosswise with each other, so that any position of the tamping pick 22 will not interfere with other tamping picks 22.

[0113] Optionally, the handle of the tamping pick 22 is cylindrical, with a large overall size and high strength. The connection between the tamping pick 22 and the inner pick arm 100 adopts a straight handle clamping method, which is convenient for installation and disassembly. The insertion angle of the tamping pick 22 is about 5°, which is basically vertical, and the force condition is good. In addition, the cross arrangement of the inner pick arm 100 and the tamping pick 22 makes the overall structure of the double-pillow tamping device 200 compact and saves space.

[0114] Fig.12 This is a schematic diagram of the cooperation of two double-sleeper tamping devices 200, please refer to Fig.12 shown.

[0115] In the direction perpendicular to the rail 30, the tamping range K1 of each double sleeper tamping device 200 located on the inner side of the rail 30 is about 270mm. When the track gauge K2 is 1067mm, the minimum spacing K3 between the inner pick arms 100 of the two tamping devices is about 325mm, and the minimum spacing K4 between the picks of two adjacent tamping picks 22 is about 370mm. Therefore, the overall lateral layout is reasonable, the tamping operation range is appropriate, and the operation requirements of the meter-gauge line are met; while in the direction of the rail 30, when inserting, please refer to Figure 6 As shown, the distance K5 between the tips of the two inner tamping picks 22 is about 100 mm, which can meet the tamping operation on the line with a small sleeper spacing, thereby improving the application scope of the double-sleeper tamping device 200.

[0116] The double-sleeper tamping device 200 can tamp two sleepers at the same time, and its working principle is as follows: the transmission assembly 23 is an eccentric vibration mechanism, which generates vibration force and motion, which is transmitted to the first tamping pick installed on the outer pick arm 21 through the second driving member 25, the first driving member 24, and the outer pick arm 21, and is transmitted to the second tamping pick installed on the inner pick arm 100 through the second driving member 25 and the inner pick arm 100, so that the pick palms of the first tamping pick and the second tamping pick generate forced micro-amplitude vibration. The clamping force is generated by the hydraulic system acting on the first driving member 24 and the second driving member 25, and the clamping force and motion are transmitted through the piston rods of the first driving member 24 and the second driving member 25, the outer pick arm 21, the inner pick arm 100, and the tamping pick 22, and finally reach the pick palm, generating a clamping motion and clamping force on the ballast.

[0117] The double-sleeper tamping device 200 provided in this embodiment 3 has the beneficial effects of reasonable design, reliable performance, long life of the tamping pick 22, and is suitable for meter-gauge line operations. The tamping pick connecting parts 11 of the first inner pick arm group 26 and the second inner pick arm group 27 are cross-arranged, so that the mounting holes on the inner pick arm 100 and the outer pick arm 21 are cylindrical holes, and the connection with the tamping pick 22 adopts a straight handle clamping method. The overall structure is reasonable and compact, making it possible to install a straight tamping pick 22; the use of the straight tamping pick 22 increases the life of the tamping pick 22 and the reliability of the tamping device, and better meets the operation requirements of the meter-gauge line.

[0118] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0119] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An inner pick arm, characterized in that: It comprises a transmission connection part and a tamping pick connection part which are connected to each other, wherein the transmission connection part is inclined toward a first direction relative to the tamping pick connection part, and a yielding matching part is arranged on a side of the tamping pick connection part which is away from the first direction; A first convex portion is formed on the tamping pick connecting portion and is arranged adjacent to the giving way matching portion, and the giving way matching portion matches the first convex portion; The tamping pick connecting portion further includes a second convex portion, wherein the second convex portion and the first convex portion are respectively located on two sides of the yielding matching portion; The bottom surface of the tamping pick connecting portion facing away from the transmission connecting portion is provided with a tamping pick mounting hole, the first mounting hole corresponding to the first convex portion is the first mounting hole, and the second mounting hole corresponding to the second convex portion is the second mounting hole; The said giving way matching part is a through groove, and the depth of the through groove gradually increases from the end of the said tamping pick connecting part close to the said transmission connecting part to the end far away from the said transmission connecting part; The yielding matching portion includes a first inclined surface, a second inclined surface and a third inclined surface, the first inclined surface is close to the first convex portion and is arranged opposite to the third inclined surface, and the second inclined surface is the bottom of the through groove; The first inclined surface, the second inclined surface and the third inclined surface respectively form an acute angle with the bottom surface of the tamping pick connecting portion facing away from the transmission connecting portion; A fourth inclined surface is arranged on the side wall of the first protrusion away from the yielding matching portion. The fourth inclined surface takes the center line of the first mounting hole as the symmetry center and is mirror-symmetrical with the first inclined surface.

2. The inner pick arm according to claim 1, characterized in that: The transmission connection portion includes a first support ear and a second support ear that are spaced apart, a symmetric center line of the first support ear and the second support ear and a center line of the yielding matching portion have a first offset distance, and the symmetric center line is closer to the first protrusion than the second protrusion.

3. The inner pick arm according to claim 2, characterized in that: The first offset distance is one quarter to one third of the distance between the inner side wall of the first support ear and the inner side wall of the second support ear.

4. The inner pick arm according to claim 1, characterized in that: The acute angle is greater than or equal to 80° and less than 90°.

5. The inner pick arm according to any one of claims 1 to 4, characterized in that: The transmission connection part includes an oil cylinder connection section and a box connection section, and the box connection section is located between the oil cylinder connection section and the ramming pick connection part; The oil cylinder connecting section is provided with a connecting rod pin hole, and the box connecting section is provided with an inner pick arm pin hole.

6. An inner pick arm assembly, characterized in that: It comprises two inner pick arms as described in any one of claims 1 to 5, which are respectively a first inner pick arm and a second inner pick arm, wherein the first protrusion of the first inner pick arm can cooperate with the yielding fitting part of the second inner pick arm, and at the same time, the first protrusion of the second inner pick arm can cooperate with the yielding fitting part of the first inner pick arm.

7. The inner pick arm assembly according to claim 6, characterized in that: The tamping pick connecting portion further includes a second convex portion, the second convex portion and the first convex portion are respectively located on both sides of the yielding matching portion, and a tamping pick mounting hole is provided on the bottom surface of the tamping pick connecting portion away from the transmission connecting portion, the first mounting hole corresponds to the first convex portion, and the second mounting hole corresponds to the second convex portion; The symmetric center line of the first mounting hole and the second mounting hole of the first inner pick arm coincides with the center line of the first mounting hole of the second inner pick arm, and the symmetric center line of the first mounting hole and the second mounting hole of the second inner pick arm coincides with the center line of the first mounting hole of the first inner pick arm.

8. A double-sleeper tamping device, characterized in that: It comprises the inner pick arm assembly as claimed in claim 6 or 7, or the inner pick arm as claimed in any one of claims 1-5.

9. The double-sleeper tamping device according to claim 8, characterized in that: The double-sleeper tamping device also includes a box body, a power mechanism, an outer pick arm and a tamping pick; The outer pick arm and the inner pick arm are connected to the box body through the power mechanism, the ramming pick is fixedly arranged at one end of the outer pick arm and the inner pick arm away from the power mechanism, and the outer pick arm is located on both sides of the inner pick arm.

10. The double-sleeper tamping device according to claim 9, characterized in that: The power mechanism includes a transmission assembly, a first driving member and a second driving member. The transmission assembly is arranged in the box body. The outer pick arm is connected to the transmission assembly through the first driving member and the second driving member in sequence, and the inner pick arm is connected to the transmission assembly through the second driving member.

11. The double-sleeper tamping device according to claim 9, characterized in that: The number of the inner pick arms and the number of the outer pick arms are both four, the inner pick arms cooperate with each other in pairs to form a first inner pick arm group and a second inner pick arm group, and the outer pick arms cooperate with each other in pairs to form a first outer pick arm group and a second outer pick arm group; The first inner pick arm group and the first outer pick arm group are both arranged on one side of the box body along the width direction, the second inner pick arm group and the second outer pick arm group are both arranged on the other side of the box body along the width direction, and the first outer pick arm group is located on both sides of the first inner pick arm group, and the second outer pick arm group is located on both sides of the second inner pick arm group.

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