Push handle structure of catenary detection trolley

Abstract

The utility model discloses a push handle structure of a contact network 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 support, a tray, a trolley chassis, a threading hole and an adjusting end head, and is characterized in that the tray is rotatably connected to one side of the handle of the T-shaped rod through the tray support; 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, the push handle structure can rotate leftwards and rightwards and can be unfolded and folded, 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 utility model 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 Catenary Inspection Cart is a device specifically designed to inspect the condition and performance of electrified railway catenary systems. It is a multifunctional, all-in-one product capable of being pushed along the track. The push handle is a key component of the Catenary Inspection Cart, allowing the operator to push the car along the track, making the entire measurement process more convenient and efficient.

[0003] However, existing inspection cart pushers often have long handles to meet ergonomic design requirements. Consequently, they typically lack internal electrical wiring, as this would compromise their strength. Furthermore, the handles of existing inspection cart pushers typically cannot be rotated or folded and locked, significantly reducing their portability and making them inconvenient to use. Utility Model Content

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

[0005] Specifically, the utility model 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 end. The tray is rotatably connected to the handle side of the T-shaped rod through the tray bracket, and the side of the T-shaped rod away from the handle is rotatably connected to the guide shaft through the adjustment end 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 the 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 trolley chassis 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 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 facing the ground, and is in contact with the limiter; the insertion part is inserted into the hollow part of the main body of the guide shaft support; the U-shaped head passes through the hollow part of the main body of the guide shaft support; the base part, the insertion part and the U-shaped head are formed as one piece.

[0011] Preferably, the T-shaped rod includes a horizontal rod and a vertical rod, the handles are located at both ends of the horizontal rod, and the adjustment end is located at one end of the vertical rod away from the horizontal rod; 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 abutting 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 away from the first abutting surface gradually decreases in a direction away from the ground.

[0015] Preferably, the transverse bar and 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 transverse bar; the electric wires 13 are arranged in the transverse bar and the longitudinal bar and pass 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 the general hand-push contact network inspection trolley will make the connection at the bottom not firm enough due to the design problem, which will cause the handle to shake more seriously. However, the utility model provides a guide shaft support passing through the upper and lower surfaces of the trolley chassis to make the connection stable and prevent shaking at the bottom.

[0018] 2. The plug-in guide shaft design of the utility model realizes the free rotation of the T-bar, and with the constraint of the limiter and the locking of the L-shaped handle, the push handle can be rotated freely and stably 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 folded away at any time, increasing the convenience of the product.

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

[0021] Figure 1 This is a front view of the push handle structure of the contact network detection trolley in the utility model in the working state;

[0022] Figure 2 This is a side view of the handle structure of the contact network detection trolley in the utility model in a folded state;

[0023] Figure 3 This is a three-dimensional assembly diagram of the push handle structure of the contact network detection trolley in the utility model;

[0024] Figure 4 This is a schematic diagram of the electrical wiring of the T-bar portion of the contact network detection trolley in the utility model;

[0025] Figure 5 This is a side view of the part of the contact network detection trolley that realizes multi-degree-of-freedom adjustment in the utility model;

[0026] Figure 6 This is an oblique view of the part of the contact network detection trolley in the utility model that realizes multi-degree-of-freedom adjustment;

[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 utility model.

[0028] Figure markings: 1-guide shaft support, 2-guide shaft, 3-hand-adjusting nut, 4-L-shaped handle, 5-limiter; 6-cotter pin, 7-T-shaped rod, 8-tray bracket, 9-tray, 10-trolley chassis, 11-wire 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 the invention with reference to the description. It should be understood that terms such as "having", "including" and "comprising" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0030] It should be noted that in the description of this utility model, the orientations or positional relationships indicated by terms are based on the orientations or positional relationships shown in the accompanying drawings. These are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "sleeved / connected", "connected", etc. should be understood in a broad sense. For example, "connection" 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 a connection between the 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 utility model discloses a push handle structure of a contact network detection 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 end 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 control equipment, a display device and other components, and is fixed in a detachable manner.

[0033] When the inspection trolley is in operation, the angle of the tray 9 can be appropriately rotated to better suit the operator's usage and viewing habits. When the inspection trolley is folded, the tray 9 and 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 via the adjustment end 12 and the cotter pin 6. When the inspection trolley is in operation, the T-bar 7 can be rotated to an inclined upright position. When the inspection trolley is folded, the T-bar 7 can be rotated to be roughly parallel to the trolley chassis 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 the shape of a hollow column 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 bosses are evenly arranged around the periphery of the upper surface of the trolley chassis 10. Four M6 screws and lock nuts are used to secure the guide shaft support 1 to the trolley chassis 10. A limiter 5 is located on the lower surface of the trolley chassis, thereby controlling the rotation angle of the guide shaft 2 and T-bar 7 within a 180° range. The guide shaft 2 is inserted from the bottom up through the lower surface of the trolley chassis 10 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 over excessively; on the other hand, since the guide shaft 2 is generally columnar, the locking force of the L-shaped handle 4 acting on different positions of the guide shaft 2 has certain differences in effect. Such a design allows operators to flexibly adjust the locking timeliness and locking degree.

[0041] The guide shaft 2 consists 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 formed as one piece.

[0042] The guide shaft 2 is integrally formed from bottom to top into three parts: a base, an insert, and a U-shaped head. The base is mounted on the lower surface of the trolley chassis 10 and engages with the stopper 5. The insert rotates with the main body of the guide shaft support 1, and the locking force of the L-shaped handle 4 primarily acts on the insert. A contact surface is connected to the same side of the two sides of the U-shaped head for screwing into the manual adjustment 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 hollow.

[0044] 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 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, realize 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 nuts.

[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 hand-adjustable 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. When tightened, it can completely abut against the first abutment surface, 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 having to remove it, thereby freeing up 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 line at the point of contact between the first and second side surfaces of the adjustment end 12, which are away from the first abutment surface, and the upper surface of the guide shaft support 1, is the rotation angle of the T-bar 7. For ergonomic reasons, this angle can be 70°. The curvature of this side gradually decreases from bottom to top, ensuring a smoother folding of the T-bar 7 without disrupting the wiring. This also allows for better coordination with the degree of loosening of the manual adjustment nut 3.

[0052] Please refer again Figure 3-4 The horizontal and vertical rods of the T-shaped rod 7 are both hollow structures, a first threading hole 11 is provided on the vertical rod, and a second threading hole 11 is provided on the horizontal rod; the wires 13 are arranged in the horizontal and vertical rods and pass through the first and second threading holes 11; and, as 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 adjustable end 12, enters the hollow T-bar longitudinal rod, and exits through the wire hole 11 formed in the upper end of the longitudinal rod to electrically connect with the electronic equipment installed on the tray 9. Alternatively, the wire hole 11 can also be formed in the crossbar, which can communicate with the interior of the hollow tray bracket 8. This allows the electrical wiring to be directly connected to the electronic equipment on the tray 9 with little exposure, further enhancing safety.

[0054] The present invention provides a handle structure for a contact network inspection trolley with the following advantages: First, the handle structure utilizes a unique rotating shaft design, enabling it to be freely rotated and locked within a 180° angle range on the trolley. Second, the handle structure can be folded without disassembly, and the bottom connection is stable, making the trolley more portable. Third, the handle structure utilizes a hollow interior, allowing for ergonomic design without sacrificing strength and allowing for electrical wiring.

[0055] Although the present invention has been described in detail above using general descriptions and specific embodiments, modifications or improvements may be made based on the present invention. The above description is merely a preferred embodiment of the present invention and is not intended to limit 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 also included within the scope of protection of the present invention.

Claims

1. A push handle structure for a contact network detection trolley, comprising 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 end (12), wherein the tray (9) is rotatably connected to the handle side of the T-shaped rod (7) through the tray bracket (8), and the side of the T-shaped rod (7) away from the handle is rotatably connected to the guide shaft (2) through the adjustment end (12) and the cotter pin (6); It is characterized by: 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 push handle structure of the contact network inspection trolley according to claim 1, characterized in that: The guide shaft support (1) includes 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 push handle structure of the contact network inspection trolley according to claim 2, 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 push handle structure of the contact network inspection trolley according to claim 3, 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 achieving locking of the guide shaft (2).

5. The push handle structure of the contact network inspection trolley according to claim 2, 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 push handle structure of the contact network inspection trolley according to claim 5, characterized in that: The T-shaped rod (7) includes a transverse rod and a longitudinal rod, the handles are located at both ends of the transverse rod, and the adjustment end head (12) is located at one end of the longitudinal rod away from the transverse rod; the adjustment end head (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 connected to the first side surface and the second side surface respectively, and the opposite side of the first abutting surface is hollowed out.

7. The push handle structure of the contact network inspection trolley 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 cotter pin (6), so that the T-shaped rod (7) can be switched between a working position and a folding position.

8. The push handle structure of the contact network inspection trolley according to claim 7, characterized in that: 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).

9. The push handle structure of the contact network inspection trolley 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 push handle structure of the contact network inspection trolley according to claim 6, characterized in that: The transverse rod and the longitudinal rod of the T-shaped rod (7) are both hollow structures, a first threading hole (11) is provided on the longitudinal rod, and a second threading hole (11) is provided on the transverse rod; the electric wire (13) is arranged in the transverse rod and the longitudinal rod 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).

Images