Push handle structure of catenary detection trolley

Abstract

The invention discloses a push handle structure of an overhead line system detection trolley, which comprises a guide shaft support, a guide shaft, a manual adjusting nut, an L-shaped handle, a limiting stopper, a cotter pin, a T-shaped rod, a tray bracket, a tray, a trolley chassis, a threading hole and an adjusting end, and is characterized in that the tray is rotatably connected to one side of the handle of the T-shaped rod through the tray bracket; the side, away from the handle, of the T-shaped rod is rotationally connected to the guide shaft through the adjusting end and the cotter pin. The guide shaft support is fixedly connected to the trolley chassis, and the guide shaft penetrates through the trolley chassis from the side face, facing the ground, of the trolley chassis and is inserted into the guide shaft support. According to the push handle structure, operation is more flexible, left-right rotation can be achieved, unfolding and folding can be achieved, and in addition, electrical wiring can be conducted under the conditions that the push handle structure conforms to the ergonomic design and the strength of the push handle structure is not affected.

Description

Technical Field

[0001] The invention relates to a contact network track inspection and parameter measurement device, in particular to a multifunctional push handle structure of a contact network inspection trolley. Background Art

[0002] The contact network inspection trolley is a device specially used to inspect the state and performance of the contact network of electrified railways. It is a multifunctional and multi-purpose integrated product that can be pushed and moved on the track. The push handle is an important part of the contact network inspection trolley, which allows the operator to push the trolley on the track, making the entire measurement process more convenient and efficient.

[0003] However, the handle of the existing testing trolley push device is usually long because it is designed to meet ergonomics, so electrical wiring is generally not designed therein, because this will affect its strength. In addition, the handle of the existing testing trolley push device is generally not rotatable, and cannot be folded and locked, so the portability is greatly reduced and it is inconvenient to use. Summary of the invention

[0004] In order to solve various problems existing in the prior art, the present invention provides a push handle structure which is foldable, rotatable and lockable and has an electrical wiring channel inside.

[0005] Specifically, the present invention discloses a push handle structure of a contact network inspection trolley, comprising a guide shaft support, a guide shaft, a hand-adjustable nut, an L-shaped handle, a limiter, a cotter pin, a T-shaped rod, a tray bracket, a tray, a trolley chassis, a threading hole and an adjustment terminal, wherein the tray is rotatably connected to a handle side of the T-shaped rod through the tray bracket, and a side of the T-shaped rod away from the handle is rotatably connected to the guide shaft through the adjustment terminal and the cotter pin;

[0006] Wherein, the guide shaft support is fixedly connected to the trolley chassis, and the guide shaft passes through the trolley chassis from a side of the trolley chassis facing the ground and is inserted into the guide shaft support.

[0007] Preferably, the guide shaft support includes a main body and a protruding portion, the main body is in the shape of a hollow column and is located on a side of the trolley chassis facing away from the ground; the protruding portion is located at one end of the main body, and passes through the trolley chassis from the side of the trolley chassis facing away from the ground and protrudes from a side of the trolley chassis facing the ground, constituting the limiter to limit the rotation angle of the guide shaft.

[0008] Preferably, a transverse groove parallel to the chassis of the trolley is provided on the side wall of the main body of the guide shaft support, and the L-shaped handle is arranged in the transverse groove, and the guide shaft is locked by operating the L-shaped handle.

[0009] Preferably, the L-shaped handle can move freely in the transverse groove to act on different parts of the guide shaft, thereby locking the guide shaft.

[0010] Preferably, the guide shaft consists of three parts: a base portion, an insertion portion and a U-shaped head which are arranged in sequence in a direction away from the ground; the base portion is located on a side of the trolley chassis facing the ground, and is in contact with the limiter; the insertion portion is inserted into the hollow portion of the main body of the guide shaft support; the U-shaped head passes through the hollow portion of the main body of the guide shaft support; the base portion, the insertion portion and the U-shaped head are integrally formed.

[0011] Preferably, the T-bar includes a cross bar and a longitudinal bar, the handles are located at both ends of the cross bar, and the adjustment end is located at one end of the longitudinal bar away from the cross bar; the adjustment end includes a first side surface, a second side surface and a first abutting surface, the first side surface and the second side surface are arranged opposite to each other to form a U-shaped frame structure; the first abutting surface is respectively connected to the first side surface and the second side surface, and the opposite side of the first abutting surface is hollowed out.

[0012] Preferably, the U-shaped head of the guide shaft and the U-shaped frame of the adjustment end are rotatably connected via the cotter pin, so that the T-shaped rod can be switched between the working position and the folding position.

[0013] Preferably, in the working position, the first abutment surface is in surface contact with the manual adjustment nut to achieve positioning of the T-bar.

[0014] Preferably, the curvature of the first side surface and the second side surface of the adjusting end head, which are away from the first abutting surface, gradually decreases in a direction away from the ground.

[0015] Preferably, the cross bar and the longitudinal bar of the T-bar are both hollow structures, a first wire threading hole is provided on the longitudinal bar, and a second wire threading hole is provided on the cross bar; the electric wire 13 is arranged in the cross bar and the longitudinal bar and passes through the first and second wire threading holes; and the guide shaft 2 is a hollow structure, and the other end of the electric wire 13 passes through the guide shaft 2 and is connected to the electrical system inside the trolley chassis 10.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The handle structure of a common hand-push contact network inspection trolley has a design problem that makes the connection at the bottom not firm enough, which causes the handle to shake severely. However, the present invention provides a guide shaft support that passes through the upper and lower surfaces of the trolley chassis, so that the connection is stable and there will be no shaking at the bottom.

[0018] 2. The insertable guide shaft design of the present invention realizes the free rotation of the T-bar, and cooperates with the constraint of the limiter and the locking of the L-shaped handle to realize the free and stable rotation of the push handle within a certain angle range.

[0019] 3. The end face contact positioning between the adjusting end at the bottom of the T-bar and the hand-adjusting nut can ensure that the handle can be switched freely and smoothly between the working state and the folding state. It can be taken out and used at any time without disassembly, and can be put away at any time, which increases the convenience of the product.

[0020] 4. The hollow design of the T-bar allows electrical wiring to be performed while the handle structure can be rotated, locked, and folded, greatly increasing the integration of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of the push handle structure of the contact network detection trolley in the present invention in a working state;

[0022] Figure 2 It is a side view of the handle structure of the contact network detection trolley in the present invention in a folded state;

[0023] Figure 3 It is a three-dimensional assembly diagram of the push handle structure of the contact network detection trolley in the present invention;

[0024] Figure 4 It is a schematic diagram of electrical wiring of the T-bar portion of the contact network detection trolley in the present invention;

[0025] Figure 5 It is a side view of the part of the overhead line inspection trolley realizing multi-degree-of-freedom adjustment in the present invention;

[0026] Figure 6 It is an oblique view of the part of the overhead line detection trolley realizing multi-degree-of-freedom adjustment in the present invention;

[0027] Figure 7 It is a schematic diagram of the guide shaft of the push handle structure of the contact network detection trolley in the present invention.

[0028] Figure markings: 1-guide shaft support, 2-guide shaft, 3-hand-adjustable nut, 4-L-shaped handle, 5-limiter; 6-cotter pin, 7-T-rod, 8-tray bracket, 9-tray, 10-trolley chassis, 11-wire threading hole, 12-adjustment terminal, 13-electric wire. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement it with reference to the description. It should be understood that terms such as "having", "including" and "comprising" used herein do not exclude the existence or addition of one or more other elements or their combinations.

[0030] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the term is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figure 1-4 As shown, the present invention discloses a push handle structure of a contact network inspection trolley, including a guide shaft support 1, a guide shaft 2, a hand-adjustable nut 3, an L-shaped handle 4, a limiter 5, a cotter pin 6, a T-shaped rod 7, a tray bracket 8, a tray 9, a trolley chassis 10, a threading hole 11 and an adjustment terminal 12. The tray 9 is rotatably connected to the handle side of the T-shaped rod 7 through the tray bracket 8. The tray is provided with components such as a control device and a display device, and is fixed in a detachable manner.

[0033] When the detection trolley is in working state, the angle of the tray 9 can be appropriately rotated to better fit the use and viewing habits of the operator. When the detection trolley is in folded state, the tray 9 and the tray bracket 8 can be rotated to be roughly parallel to the T-bar 7 to save space. The side of the T-bar 7 away from the handle is rotatably connected to the guide shaft 2 through the adjustment end 12 and the cotter pin 6. When the detection trolley is in working state, the T-bar 7 can be rotated to an oblique standing position. When the detection trolley is in folded state, the T-bar 7 can be rotated to be roughly parallel to the chassis of the trolley to save space.

[0034] The guide shaft support 1 is fixedly connected to the trolley chassis 10 , and the guide shaft 2 passes through the trolley chassis 10 from a side of the trolley chassis 10 facing the ground and is inserted into the guide shaft support 1 .

[0035] Specifically, the guide shaft support 1 includes a main body and a protruding portion, the main body is in a hollow columnar shape and is located on the side of the trolley chassis 10 facing away from the ground; the protruding portion is located at one end of the main body, and passes through the trolley chassis 10 from the side of the trolley chassis 10 facing away from the ground and protrudes from the side of the trolley chassis 10 facing the ground, forming the limiter 5 to limit the rotation angle of the guide shaft 2.

[0036] See also Figure 5-6 The main body is located on the upper surface of the trolley chassis 10. Four boss structures are evenly arranged at the periphery of the upper surface of the trolley chassis 10. Four M6 screws and locking nuts are used to firmly fasten the guide shaft support 1 to the trolley chassis 10. The limiter 5 is located on the lower surface of the trolley chassis, so as to control the rotation angle of the guide shaft 2 and the T-bar 7 within the range of 180°. The guide shaft 2 is inserted from the lower surface of the trolley chassis 10 from bottom to top into the main body of the guide shaft support 1.

[0037] A transverse groove parallel to the trolley chassis 10 is provided on the side wall of the main body of the guide shaft support 1 , and the L-shaped handle 4 is disposed in the transverse groove. The guide shaft 2 is locked by operating the L-shaped handle 4 .

[0038] The function of the L-shaped handle 4 is to lock the guide shaft 2. By operating the L-shaped handle, the central aperture of the main body of the guide shaft support 1 is reduced, eliminating the rotation gap, thereby locking the guide shaft 2 and ensuring that the entire push handle structure will not rotate left and right when pushing.

[0039] The L-shaped handle 4 can move freely in the transverse groove to act on different parts of the guide shaft 2, thereby locking the guide shaft 2.

[0040] On the one hand, by adjusting the position of the L-shaped handle 4 in the horizontal groove, operators of different body shapes can more easily reach the L-shaped handle 4 without bending too much; on the other hand, since the guide shaft 2 is generally columnar, the locking force of the L-shaped handle 4 acts on different positions of the guide shaft 2 and has certain differences in effect. Such a design allows the operator to flexibly adjust the locking timeliness and locking degree.

[0041] The guide shaft 2 consists of three parts: a base portion, an insertion portion and a U-shaped head arranged in sequence in the direction away from the ground. The base portion is located on the side of the trolley chassis 10 facing the ground, and is in contact with the limiter 5; the insertion portion is inserted into the hollow portion of the main body of the guide shaft support 1; the U-shaped head passes through the hollow portion of the main body of the guide shaft support 1; the base portion, the insertion portion and the U-shaped head are integrally formed.

[0042] The guide shaft 2 is integrally formed from bottom to top into three parts: a base, an insertion part, and a U-shaped head. The base is arranged on the lower surface of the trolley chassis 10 and cooperates with the limiter 5. The insertion part rotates with the main body of the guide shaft support 1, and the locking force of the L-shaped handle 4 mainly acts on the insertion part. A contact surface is connected to the same side of the two side surfaces constituting the U-shaped head for screwing in the hand-adjustable nut 3.

[0043] The T-shaped rod 7 includes a horizontal rod and a vertical rod, the handles are located at both ends of the horizontal rod, and the adjustment end 12 is located at one end of the vertical rod away from the horizontal rod; the adjustment end 12 includes a first side surface, a second side surface and a first abutting surface, the first side surface and the second side surface are arranged opposite to each other to form a U-shaped frame structure; the first abutting surface is respectively connected to the first side surface and the second side surface, and the opposite side of the first abutting surface is hollowed out.

[0044] The U-shaped head of the guide shaft 2 and the U-shaped frame of the adjustment end 12 are rotatably connected via the cotter pin 6, so that the T-shaped rod 7 can be switched between the working position and the folding position.

[0045] The staggered and overlapping design of the two U-shaped structures can, on the one hand, achieve relative rotation, thereby realizing the position switching of the T-shaped rod 7 and the change of the working state of the push handle structure. On the other hand, the two U-shaped structures as a whole give way to part of the middle space, which can realize the routing of the wires 13 and the installation and adjustment of the hand-adjustable nut.

[0046] In the working position, the first abutting surface is in surface contact with the manual adjustment nut 3 to achieve positioning of the T-shaped rod 7 .

[0047] The manual adjustment nut 3 is arranged on the opposite side of the rotation angle of the T-bar 7, that is, at the position in contact with the first abutment surface of the adjustment end 12, and can completely abut with the first abutment surface when tightened, thereby ensuring that the T-bar 7 will not shake when in the working position.

[0048] In addition, when the T-shaped rod 7 needs to be folded, the hand-adjustable nut 3 can be loosened outwards without removing it, thereby leaving enough space for the first abutting surface to move freely.

[0049] Furthermore, the first abutment surface includes a first surface and a second surface, the first surface extends in a direction perpendicular to the trolley chassis 10 and is used to achieve complete surface contact with the hand-adjustable nut 3, and the second surface forms an angle with the trolley chassis 10, which is roughly equivalent to the rotation angle of the T-bar 7.

[0050] The curvature of the first side surface and the second side surface of the adjusting end head 12 away from the first abutting surface gradually decreases in a direction away from the ground.

[0051] Please refer again Figure 5 When the T-bar is in the working position, the maximum angle between the tangent of the point where the first side and the second side of the adjusting end 12 are away from the first abutting surface and the upper surface of the guide shaft support 1 is in contact with the upper surface of the guide shaft support 1, which is the rotation angle of the T-bar 7. For ergonomic considerations, it can be 70°. And the curvature of the side gradually decreases from bottom to top, which can make the T-bar 7 more stable during the folding process and will not damage the routing. At the same time, it can also better match the degree of loosening of the hand-adjusting nut 3.

[0052] Please refer again Figure 3-4 The horizontal bar and the vertical bar of the T-shaped bar 7 are both hollow structures, a first threading hole 11 is provided on the vertical bar, and a second threading hole 11 is provided on the horizontal bar; the wire 13 is arranged in the horizontal bar and the vertical bar and passes through the first and second threading holes 11; and Figure 3 and 7 As shown, the guide shaft 2 is a hollow structure, and the other end of the wire 13 passes through the guide shaft 2 and is connected to the electrical system inside the trolley chassis 10 .

[0053] The electrical wiring passes through the U-shaped frame of the adjustment end 12, enters the hollow T-shaped rod, and passes through the threading hole 11 opened at the upper end of the rod to be electrically connected to the electronic equipment arranged on the tray 9. On the other hand, the threading hole 11 can also be opened on the cross bar, which can communicate with the inside of the hollow tray bracket 8, so that the electrical wiring can be directly electrically connected to the electronic equipment on the tray 9 without being exposed, further increasing safety.

[0054] The push handle structure of a contact network inspection trolley provided by the present invention has the following beneficial effects: First, the present invention adopts a unique rotating shaft design so that the push handle structure can be freely rotated and locked within an angle range of 180° on the inspection trolley. Second, the present invention can make the push handle structure of the inspection trolley directly foldable without disassembly, and the bottom connection is stable, making the portability of the inspection trolley more prominent. Third, the push handle structure of the present invention adopts an internal hollow design, so electrical wiring can be performed while conforming to the ergonomic design and not affecting its strength.

[0055] Although the present invention has been described in detail above with general description and specific embodiments, some modifications or improvements can be made on the basis of the present invention. The above description is only a preferred embodiment of the present invention and is not limited to the scope of the present invention. Other changes and modifications made by those skilled in the art without departing from the spirit and scope of protection of the present invention are still included in the scope of protection of the present invention.

Claims

1. A handle structure for a contact network inspection trolley, comprising a guide shaft support (1), a guide shaft (2), a hand-adjustable nut (3), an L-shaped handle (4), a stopper (5), a cotter pin (6), a T-shaped rod (7), a tray bracket (8), a tray (9), a trolley chassis (10), a threading hole (11) and an adjustment terminal (12), wherein the tray (9) is rotatably connected to a handle side of the T-shaped rod (7) through the tray bracket (8), and a side of the T-shaped rod (7) away from the handle is rotatably connected to the guide shaft (2) through the adjustment terminal (12) and the cotter pin (6); It is characterized in that The guide shaft support (1) is fixedly connected to the trolley chassis (10), and the guide shaft (2) passes through the trolley chassis (10) from a side of the trolley chassis (10) facing the ground and is inserted into the guide shaft support (1).

2. The handle structure of the contact network inspection trolley according to claim 1 is characterized in that: The guide shaft support (1) comprises a main body and a protruding portion, wherein the main body is in the shape of a hollow column and is located on a side of the trolley chassis (10) facing away from the ground; the protruding portion is located at one end of the main body and passes through the trolley chassis (10) from the side of the trolley chassis (10) facing away from the ground and protrudes from the side of the trolley chassis (10) facing the ground, forming the limiter (5) to limit the rotation angle of the guide shaft (2).

3. The handle structure of the contact network inspection vehicle according to claim 2 is characterized in that: A transverse groove parallel to the trolley chassis (10) is provided on the side wall of the main body of the guide shaft support (1), and the L-shaped handle (4) is arranged in the transverse groove. The guide shaft (2) is locked by operating the L-shaped handle (4).

4. The handle structure of the contact network inspection trolley according to claim 3 is characterized in that: The L-shaped handle (4) can move freely in the transverse groove to act on different parts of the guide shaft (2), thereby locking the guide shaft (2).

5. The handle structure of the contact network inspection trolley according to claim 2 is characterized in that: The guide shaft (2) is composed of three parts: a base part, an insertion part and a U-shaped head arranged in sequence in a direction away from the ground. The base part is located on the side of the trolley chassis (10) facing the ground and is in contact with the limiter (5); the insertion part is inserted into the hollow part of the main body of the guide shaft support (1); the U-shaped head passes through the hollow part of the main body of the guide shaft support (1); the base part, the insertion part and the U-shaped head are integrally formed.

6. The handle structure of the contact network inspection vehicle according to claim 5, characterized in that: The T-shaped rod (7) comprises a crossbar and a longitudinal rod, the handles are located at both ends of the crossbar, and the adjustment end (12) is located at one end of the longitudinal rod away from the crossbar; the adjustment end (12) comprises a first side surface, a second side surface and a first abutting surface, the first side surface and the second side surface are arranged opposite to each other to form a U-shaped frame structure; the first abutting surface is respectively connected to the first side surface and the second side surface, and the opposite side of the first abutting surface is hollowed out.

7. The handle structure of the contact network inspection vehicle according to claim 6, characterized in that: The U-shaped head of the guide shaft (2) and the U-shaped frame of the adjustment end head (12) are rotatably connected via the split pin (6), so that the T-shaped rod (7) can be switched between a working position and a folding position.

8. The handle structure of the contact network inspection vehicle according to claim 7, characterized in that: In the working position, the first abutment surface is in surface contact with the hand-adjustable nut (3) to achieve positioning of the T-shaped rod (7).

9. The handle structure of the contact network inspection vehicle according to claim 6, characterized in that: The curvature of the first side surface and the second side surface of the adjusting end head (12) away from the first abutting surface gradually decreases in a direction away from the ground.

10. The handle structure of the contact network inspection vehicle according to claim 6, characterized in that: The cross bar and the longitudinal bar of the T-shaped bar (7) are both hollow structures, a first threading hole (11) is provided on the longitudinal bar, and a second threading hole (11) is provided on the cross bar; the electric wire (13) is arranged in the cross bar and the longitudinal bar and passes through the first and second threading holes (11); Furthermore, the guide shaft (2) is a hollow structure, and the other end of the electric wire (13) passes through the guide shaft (2) and is connected to the electrical system inside the trolley chassis (10).

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