CN-122003340-A - Tension balancer

Abstract

The tension balancer includes first to nth cylindrical members, first to (n-1) th coil springs, first hooks attached to the first cylindrical member, second hooks attached to the nth cylindrical member, and a scale attached to the nth cylindrical member. The scale extends in a first direction parallel to the central axes of the first to nth cylindrical members, is located outside the nth cylindrical member, overlaps the nth cylindrical member in a second direction perpendicular to the first direction, and is stretchable in the first direction. The first to nth cylindrical members are arranged such that a (j+1) th cylindrical member selected from the first to nth cylindrical members is surrounded by the jth cylindrical member. The cylindrical member and the coil spring are alternately arranged. n is a natural number of 3 or more, and j is a variable selected from natural numbers of 1 or more and (n-1) or less.

Inventors

• Tian Shengyangping

Assignees

• 日本发条株式会社

Dates

Publication Date

20260508

Application Date

20240905

Priority Date

20231004

Claims (10)

1. 1. A tension balancer, comprising: first to nth cylindrical members; first to (n-1) th coil springs; A first hook mounted on the first cylindrical member; A second hook mounted on the nth cylindrical member, and A scale attached to the nth cylindrical member, extending in a first direction parallel to a central axis of the first to nth cylindrical members, located outside the nth cylindrical member, overlapping the nth cylindrical member in a second direction perpendicular to the first direction, and being stretchable in the first direction, The first to nth cylindrical members are arranged such that a (j+1) th cylindrical member selected from the first to nth cylindrical members is surrounded by a j-th cylindrical member selected from the first to nth cylindrical members, The cylindrical member and the coil spring are alternately arranged, N is a natural number of 2 or more, and j is a variable selected from natural numbers of 1 or more and (n-1) or less.
2. 2. The tension balancer according to claim 1, further comprising: A pointer member extending in the second direction and disposed between the scale and the nth cylindrical member.
3. 3. The tension balancer as claimed in claim 1, wherein, The scale has: a beam connected to the nth cylindrical member and extending in the first direction, and A sliding member which accommodates the beam, is slidable along the beam, and has graduations.
4. 4. The tension balancer as claimed in claim 3, wherein, The beam has a plurality of through holes aligned in the first direction, The sliding member has at least one opening overlapping one of the through holes.
5. 5. The tension balancer as claimed in claim 3, wherein, The beam has a slit extending in the first direction and through the beam, The sliding member has at least one opening overlapping the slit.
6. 6. The tension balancer as recited in claim 5, wherein, The width of the slit varies periodically.
7. 7. The tension balancer as claimed in claim 3, wherein, The end shape of the beam in a plane perpendicular to the first direction is circular.
8. 8. The tension balancer as claimed in claim 3, wherein, The beam is of a plate-like shape, An end face of the sliding member in a plane perpendicular to the first direction is C-shaped.
9. 9. The tension balancer as claimed in claim 3, wherein, The outer periphery of the beam has an externally threaded surface, The sliding member has an inner wall that is internally threaded and has a bottomed or through hole extending in the first direction.
10. 10. The tension balancer as claimed in claim 3, wherein, The scale is connected to the nth cylindrical member by a front plate having a through hole through which internal threads are formed, The slide member has an externally threaded surface.

Description

Tension balancer Technical Field Embodiments of the present invention relate to a tension balancer that may be used with overhead lines. Background A tension balancer is mounted on an overhead line used for a railway or the like as a device capable of stretching the overhead line with an appropriate tension even if the overhead line expands or contracts due to a temperature change. For example, patent documents 1 and 2 disclose a tension balancer whose basic structure includes a plurality of cylindrical members arranged coaxially and a coil spring arranged between the cylindrical members. Further, a graduated scale is attached to the tension balancer as an index for measuring the displacement thereof, whereby the state of the coil spring in the tension balancer and the like can be grasped. Prior art literature Patent literature Patent document 1 Japanese patent application laid-open No. 2014-108766 Patent document 2 Japanese patent application laid-open No. 2009-303301 Disclosure of Invention Problems to be solved by the invention One of the problems of the embodiments of the present invention is to provide a tension balancer having a new structure. Or one of the problems of the embodiments of the present invention is to provide a tension balancer that can be used with an appropriate stroke length over a long period of time. Means for solving the problems One embodiment of the present invention is a tension balancer. The tension balancer includes first to nth cylindrical members, first to (n-1) th coil springs, first hooks attached to the first cylindrical member, second hooks attached to the nth cylindrical member, and a scale attached to the nth cylindrical member. The scale extends in a first direction parallel to the central axes of the first to nth cylindrical members, is located outside the nth cylindrical member, overlaps the nth cylindrical member in a second direction perpendicular to the first direction, and is configured to be stretchable in the first direction. The first to nth cylindrical members are configured such that a jth cylindrical member selected from the first to nth cylindrical members is surrounded by a (j+1) th cylindrical member selected from the first to nth cylindrical members. The cylindrical member and the coil spring are alternately arranged. n is a natural number of 3 or more, and j is a variable selected from natural numbers of 1 or more and (n-1) or less. Drawings Fig. 1 is a schematic perspective view of a tension balancer according to an embodiment of the present invention. Fig. 2 is a schematic end view of a tension balancer according to an embodiment of the present invention. Fig. 3A is a schematic side view of a portion of a tension balancer according to an embodiment of the present invention. Fig. 3B is a schematic side view of a portion of a tension balancer according to an embodiment of the present invention. Fig. 3C is a schematic end view of a portion of a tension balancer in accordance with an embodiment of the present invention. Fig. 4A is a schematic side view of a portion of a tension balancer according to an embodiment of the present invention. Fig. 4B is a schematic side view of a portion of a tension balancer according to an embodiment of the present invention. Fig. 5A is a schematic side view of a portion of a tension balancer according to an embodiment of the present invention. Fig. 5B is a schematic side view of a portion of a tension balancer according to an embodiment of the present invention. Fig. 6A is a schematic side view of a portion of a tension balancer according to an embodiment of the present invention. Fig. 6B is a schematic side view of a portion of a tension balancer according to an embodiment of the present invention. Fig. 6C is a schematic end view of a portion of a tension balancer in accordance with an embodiment of the present invention. Fig. 7A is a schematic side view of a portion of a tension balancer according to an embodiment of the present invention. Fig. 7B is a schematic side view of a portion of a tension balancer according to an embodiment of the present invention. Fig. 7C is a schematic end view of a portion of a tension balancer in accordance with an embodiment of the present invention. Fig. 8 is a schematic side view of a portion of a tension balancer according to an embodiment of the present invention. Detailed Description Hereinafter, embodiments of the application disclosed in the present application are described with reference to the accompanying drawings. However, the present application can be implemented in various forms within a scope not departing from the gist thereof, and is not limited to the description of the embodiments illustrated below. For the sake of clarity of the description, the drawings may schematically show the width, thickness, shape, etc. of each part in comparison with the actual aspects, but are only examples and do not limit the explanation of the present invention. Further, elements having t