Pantograph head of pantograph
By using the design of connecting support rods, carbon sliders and spring components in the pantograph head, the problem of pantograph head adapting to different contact network voltages and mechanical vibrations in the dual-current rail transit is solved, and stable power withdrawal and extended service life are achieved.
Patent Information
- Application Number
- CN202421640206.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-11
AI Technical Summary
The pantograph bow head is difficult to adapt to different contact network voltages and mechanical vibrations in double-current rail transit, resulting in unstable power withdrawal.
The bow head design includes a support rod, a carbon skateboard and a symmetrical support bracket is adopted. The skateboard bracket and the bow head bracket are connected through a spring assembly to ensure that the carbon skateboard and the contact network are in a stress-contact state, and a large deformation space is provided to adapt to different contact networks.
It realizes smooth power acquisition on contact networks at different heights and types, enhances the mechanical strength and deformation ability of the pantograph, and improves the reliability and service life of the power acquisition.
Smart Images
Figure CN222756429U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of rail transportation, in particular to a pantograph head. Background Art
[0002] The pantograph is a device that provides energy to mainline railway trains and subway light rail trains through the overhead line. Since the vehicle is in contact with the overhead line during operation, the dynamic characteristics of the pantograph are very high. The pantograph head is the key component of the pantograph, which is required to have a simple structure, light weight, small size and good aerodynamic characteristics.
[0003] In view of the need for intercity EMUs to operate under both AC and DC contact network voltages, pantographs operate on different contact networks. The speed of the rail train and the current borne by the pantograph are different. The pantograph needs to be able to draw power normally on both contact networks. The pantograph needs to have a certain mechanical strength and be able to adapt to the mechanical vibration during the operation of the rail vehicle. The pantograph head and the contact network pantograph-net following performance has become very critical, and the weight and shape of the pantograph head components have increasingly higher requirements for aerodynamic performance, noise, etc., so the pantograph head adaptability problem needs to be solved. Utility Model Content
[0004] The utility model aims to provide a pantograph head to solve the problem of the adaptability of the pantograph head to dual-current power supply.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the bow head of the pantograph comprises a support rod, a carbon skateboard and two symmetrical support brackets, each of the support brackets comprises a skateboard bracket and a bow head bracket, the skateboard bracket and the bow head bracket are movably connected through a spring assembly, the carbon skateboard is fixedly installed above the skateboard bracket, the support rod is fixedly installed in the middle of the bow head bracket, the skateboard bracket comprises two skateboard bracket monomers, the two skateboard bracket monomers are arranged in parallel and fixedly connected, the bow head bracket comprises two bow head bracket monomers, the two bow head bracket monomers are parallel and gap-arranged on the outsides of the two skateboard bracket monomers, and the two bow head bracket monomers are fixedly connected, the spring assembly comprises a first connector whose one end is rotatably connected to the skateboard bracket, and a second connector whose other end is rotatably connected to the bow head bracket, the first connector and the second connector are movably connected through a strip ring, a spring is arranged on the outer sleeve of the strip ring, and the two ends of the spring are in contact between the first connector and the second connector.
[0006] The principle and advantage of this scheme are: in the operation of dual-flow rail transit, the bow head of the pantograph is used as a power-taking device on the contact network. In the AC section, the contact network is often slightly higher than the DC section contact network. In the bow head of the pantograph, the slide bracket and the bow head bracket are movably connected through a spring assembly, so that the slide bracket and the bow head bracket can move relative to each other, and under the action of the spring assembly, the carbon slide and the contact network are in a force contact state, ensuring the smooth power taking of the contact network at different heights. In addition, the contact network in the tunnel may use a rigid contact network, and its deformation capacity is lower than that of the non-rigid section contact network. Therefore, the pantograph bow head needs to have a larger deformation space. In this scheme, the spring assembly includes a first connector rotatably connected to the slide bracket at one end, and a second connector rotatably connected to the bow head bracket at the other end. The first connector and the second connector are movably connected through a strip ring, and a spring is provided on the outer sleeve of the strip ring. The two ends of the spring are in contact between the first connector and the second connector. The gap between each circle of the spring ensures the maximum compression of the spring, and the closed state of the strip ring is the maximum extension of the spring. This ensures that the pantograph head has a large deformation space while avoiding the deformation failure of the spring.
[0007] As an improvement, the spring assembly is provided with two groups, and the two groups of spring assemblies are respectively installed between the skateboard bracket and the bow head bracket in an axially symmetrical manner with the support rod.
[0008] The beneficial effect of this improvement is that through two groups of symmetrical spring components, the carbon slide plate and the contact network can contact more smoothly during the deformation process.
[0009] As an improvement, the bow head bracket and the support rod are fixedly connected by a detachable connecting assembly, and the detachable connecting assembly includes reinforcing plates fitly fixed to both sides of the bow head bracket unit, and a mounting plate fitly fixed to the outer reinforcing plate. The first connecting head or the second connecting head is connected to a bearing rod via a bearing, and both ends of the bearing rod pass through the bow head bracket unit, the reinforcing plate and the mounting plate on their respective sides, and the end of the bearing rod is fixed by bolts.
[0010] The beneficial effect of this improvement is that since the connection between the bow head bracket and the support rod is a direct force-bearing part, the anti-deformation ability of the bow head bracket monomer is enhanced through the effect of the reinforcement plate.
[0011] As an improvement, the structure of the skateboard bracket for mounting the carbon skateboard includes connecting ears extending from the top of the skateboard bracket to both sides, the carbon skateboard is fixedly connected to the connecting ears by bolts, and a support plate is fixed at the corner of the connecting ears and the skateboard bracket.
[0012] The beneficial effect of this improvement is that the skateboard bracket is designed with special connecting ears, so that the carbon skateboard can be easily connected. In addition, a support plate is fixed at the corner between the connecting ear and the skateboard bracket. Considering that the corner is a stress concentration part, its deformation resistance is enhanced by the support plate.
[0013] As an improvement, there are two carbon slide plates, which are arranged in parallel on a slide plate bracket.
[0014] The beneficial effect of this improvement is that both carbon slide plates are used to draw electricity from the contact network, which increases the reliability of the pantograph in drawing electricity.
[0015] As an improvement, the carbon skateboard includes a skateboard support, an insulating corner and a carbon skateboard body. Clamping edges are arranged on both sides of the long side of the skateboard support. The carbon skateboard body is clamped on the skateboard support. A conductive rod is arranged in the skateboard support. Both ends of the conductive rod pass through the bottom of the skateboard support and are connected to terminal posts. The middle part of the conductive rod is higher than the inner surface of the skateboard support and is used to centrally fix the carbon skateboard body. The insulating corners are fixed at both ends of the skateboard support and are used to fix and insulate the ends of the carbon skateboard body.
[0016] The beneficial effect of this improvement is that the clamping edges on both sides of the long sides of the skateboard support can clamp the carbon skateboard body. In addition, the middle part of the conductive rod is higher than the inner surface of the skateboard support, which further fixes the center of the carbon skateboard body; so that the carbon skateboard body is in direct contact with the contact network, which is more stable.
[0017] As an improvement, a margin distance is reserved below the bow head bracket for the skateboard bracket to move. Through this margin, the skateboard bracket and the bow head bracket can move relative to each other without interference.
[0018] As an improvement, the first connector and the second connector are both connected with an adjusting head for adjusting the initial pressure of the spring, and the adjusting head is a nut that is adjustably threadedly connected to the first connector or the second connector.
[0019] The beneficial effect of this improvement is that the initial pressure of the spring can be adjusted by adjusting the head, so that the pantograph is in the best deformation state to contact the contact network, thereby ensuring the service life of the pantograph. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the bow head structure of the pantograph according to an embodiment of the utility model.
[0021] Figure 2 for Figure 1 Schematic diagram of the structure of the middle support bracket.
[0022] Figure 3 for Figure 2 Schematic diagram of the structure of the middle bow head bracket.
[0023] Figure 4 for Figure 2 Schematic diagram of the structure of the middle skateboard bracket.
[0024] Figure 5 for Figure 1 The structure of a mid-carbon skateboard is a schematic diagram. DETAILED DESCRIPTION
[0025] The following is further described in detail through specific implementation methods:
[0026] The figure marks in the drawings of the specification include: support bracket 1, bow head bracket 11, skateboard bracket 12, spring assembly 13, first connecting head 131, bearing 132, second connecting head 133, carbon skateboard 2; carbon skateboard body 21, skateboard support 22, insulating angle 23, conductive rod 24, support rod 3; detachable connecting assembly 15, reinforcing plate 151, mounting plate 152, bearing rod 153, connecting ear 16, support plate 161.
[0027] As attached Figure 1 , Figure 2 , Figure 3 and Figure 4 The pantograph head shown in the figure comprises a support rod 3, a carbon slide plate 2 and two symmetrical support brackets 1. Each support bracket 1 comprises a slide plate bracket 12 and a pantograph head bracket 11. The slide plate bracket 12 and the pantograph head bracket 11 are movably connected via a spring assembly 13.
[0028] The carbon skateboard 2 is fixedly installed above the skateboard bracket 12, and the support rod 3 is fixedly installed in the middle of the bow head bracket 11. The skateboard bracket 12 includes two skateboard bracket monomers, and the two skateboard bracket monomers are arranged in parallel and fixedly connected. The bow head bracket 11 includes two bow head bracket monomers, and the two bow head bracket monomers are parallel and arranged in a gap outside the two skateboard bracket monomers, and the two bow head bracket monomers are fixedly connected.
[0029] In the operation of dual-flow rail transit, the bow head of the pantograph is used as a power-taking device on the contact network. In the AC section, the contact network is often slightly higher than that in the DC section. In the bow head of the pantograph, the slide bracket 12 and the bow head bracket 11 are movably connected by a spring assembly 13, so that the slide bracket and the bow head bracket can move relative to each other, and under the action of the spring assembly 13, the carbon slide 2 and the contact network are in a state of force contact, ensuring smooth power taking at contact networks at different heights. In addition, the contact network in the tunnel may use a rigid contact network, and its deformation capacity is lower than that of the non-rigid section contact network. The bow head of the pantograph has a large deformation space to meet the smooth power taking of various contact networks.
[0030] The spring assembly 13 includes a first connector 131 rotatably connected to the skateboard bracket at one end, and a second connector 133 rotatably connected to the bow bracket at the other end. The first connector 131 and the second connector 133 are movably connected through a strip ring, and a spring is provided on the outer sleeve of the strip ring. The two ends of the spring are in contact between the first connector 131 and the second connector 133.
[0031] The first connector 131 and the second connector 133 are both connected with an adjusting head for adjusting the initial pressure of the spring, and the adjusting head is a nut that is adjustable and threadedly connected to the first connector or the second connector. The initial pressure of the spring can be adjusted through the adjusting head, so that the pantograph is in the best deformation state to contact the contact network, thereby ensuring the service life of the pantograph.
[0032] The gap between each circle of the spring ensures the maximum compression of the spring, and the closed state of the strip ring is the maximum extension of the spring. This ensures that the pantograph head has a large deformation space while avoiding the deformation failure of the spring.
[0033] There are two groups of spring assemblies 13, which are respectively installed between the slide bracket 12 and the bow head bracket 11 in an axially symmetrical manner with the support rod 3; through the two groups of symmetrical spring assemblies, the carbon slide and the contact network can contact more smoothly during the deformation process.
[0034] The bow bracket 11 and the support rod 3 are fixedly connected by a detachable connection assembly 15, which includes a reinforcing plate 151 fixed on both sides of the bow bracket monomer, and a mounting plate 152 fixed on the outer reinforcing plate. The first connector 131 or the second connector 133 is connected to a bearing rod 153 through a bearing 132. Both ends of the bearing rod 153 pass through the bow bracket monomer, the reinforcing plate 151 and the mounting plate 152 on their respective sides, and the ends of the bearing rod 153 are fixed by bolts. The connection between the bow bracket 11 and the support rod 3 is a direct force-bearing part. Through the action of the reinforcing plate 151, the deformation resistance of the bow bracket monomer is enhanced.
[0035] The structure of the skateboard bracket 12 for mounting the carbon skateboard includes a connecting ear 16 extending from the top of the skateboard bracket to both sides, and the carbon skateboard 2 is fixedly connected to the connecting ear 16 by bolts, and a support plate 161 is fixed at the corner between the connecting ear 16 and the skateboard bracket 12. The skateboard bracket 12 is designed with a special connecting ear 16, so that the carbon skateboard can be easily connected. In addition, a support plate 161 is fixed at the corner between the connecting ear 16 and the skateboard bracket 12, which is also considered that the corner is a stress concentration part, and its anti-deformation ability is enhanced by the support plate 161.
[0036] like Figure 1 and Figure 5As shown, there are two carbon slide plates 2, and the two carbon slide plates 2 are parallelly mounted on the slide plate bracket 12. Both carbon slide plates 2 are used to draw electricity on the contact network, which increases the reliability of the pantograph in drawing electricity. The carbon slide plate 2 includes a slide plate support 22, an insulating angle 23 and a carbon slide plate body 21. The two sides of the long side of the slide plate support 22 are provided with clamping edges, and the carbon slide plate body 21 is clamped on the slide plate support 22. A conductive rod 24 is provided in the slide plate support 22. The two ends of the conductive rod 24 pass through the bottom of the slide plate support 22 and are connected to the terminal. The middle part of the conductive rod 24 is higher than the inner surface of the slide plate support 24, which is used to fix the center of the carbon slide plate body. The insulating angle 23 is fixed at both ends of the slide plate support 22, which is used to fix and insulate the end of the carbon slide plate body 21. The clamping edges on both sides of the long side of the slide plate support 22 can clamp the carbon slide plate body 21. In addition, the middle part of the conductive rod 24 is higher than the inner surface of the slide plate support, which further fixes the center of the carbon slide plate body; so that the carbon slide plate body is in direct contact with the contact network, which is more stable.
[0037] A margin distance is reserved below the bow head bracket 11 for the movement of the skateboard bracket 12. In this embodiment, the margin is 80 mm, and this margin allows the skateboard bracket and the bow head bracket to move relative to each other without interference.
[0038] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A pantograph head, comprising a support rod, a carbon slide plate and two symmetrical support brackets, each of which comprises a slide plate bracket and a pantograph head bracket, characterized in that: The skateboard bracket and the bow head bracket are movably connected via a spring assembly, the carbon skateboard is fixedly installed above the skateboard bracket, and the support rod is fixedly installed in the middle of the bow head bracket. The skateboard bracket comprises two skateboard bracket monomers, which are arranged in parallel and fixedly connected. The bow head bracket comprises two bow head bracket monomers, which are parallel and spaced apart from each other on the outsides of the two skateboard bracket monomers, and are fixedly connected to each other. The spring assembly comprises a first connector whose one end is rotatably connected to the skateboard bracket, and a second connector whose other end is rotatably connected to the bow head bracket. The first connector and the second connector are movably connected via a strip ring, and a spring is arranged on the outer sleeve of the strip ring, and both ends of the spring are in contact between the first connector and the second connector.
2. The pantograph head according to claim 1, characterized in that: The spring components are provided in two groups, and the two groups of spring components are respectively installed between the skateboard bracket and the bow head bracket in an axially symmetrical manner with the support rod.
3. The pantograph head according to claim 2, characterized in that: The bow head bracket and the support rod are fixedly connected by a detachable connecting assembly, and the detachable connecting assembly includes reinforcing plates fixed on both sides of the bow head bracket unit, and a mounting plate fixed on the outer reinforcing plate. The first connecting head or the second connecting head is connected to a bearing rod via a bearing, and both ends of the bearing rod pass through the bow head bracket unit, the reinforcing plate and the mounting plate on their respective sides, and the end of the bearing rod is fixed by bolts.
4. The pantograph head according to claim 3, characterized in that: The structure of the skateboard bracket for mounting the carbon skateboard includes connecting ears extending from the top of the skateboard bracket to both sides, the carbon skateboard is fixedly connected to the connecting ears by bolts, and a support plate is fixed at the corner of the connecting ears and the skateboard bracket.
5. The pantograph head according to claim 4, characterized in that: There are two carbon slide plates, which are arranged in parallel on a slide plate bracket.
6. The pantograph head according to claim 5, characterized in that: The carbon skateboard includes a skateboard support, an insulating angle and a carbon skateboard body. Clamping edges are arranged on both sides of the long side of the skateboard support. The carbon skateboard body is clamped on the skateboard support. A conductive rod is arranged in the skateboard support. Both ends of the conductive rod pass through the bottom of the skateboard support and are connected to terminal posts. The middle part of the conductive rod is higher than the inner surface of the skateboard support and is used to centrally fix the carbon skateboard body. The insulating angles are fixed at both ends of the skateboard support and are used to fix and insulate the ends of the carbon skateboard body.
7. The pantograph head according to claim 6, characterized in that: A margin distance is reserved below the bow head bracket for the movement of the skateboard bracket.
8. The pantograph head according to claim 7, characterized in that: The first connector and the second connector are both connected with an adjusting head for adjusting the initial pressure of the spring, and the adjusting head is a nut that is adjustably threadedly connected to the first connector or the second connector.