Contact type crane travel switch

Abstract

The utility model relates to a travel switch, in particular to a contact type crane travel switch, which comprises a travel switch body, a sinker bar, a connecting rod, a bump and the like. The striking rod is rotatably mounted on the travel switch body, a connecting rod is arranged between the travel switch body and the striking rod, the connecting rod is fixed on the travel switch body, one end, far away from the travel switch body, of the connecting rod is connected with a convex block, one side, facing the travel switch body, of the striking rod is provided with an annular disc and a vertical rod, and the vertical rod is arranged at the central point of the annular disc. By rotating a rotating plate, the rotating plate drives a U-shaped block to move along an annular guide rod, a sliding ring is limited by a sliding groove, and the sliding ring is driven by the U-shaped block to horizontally move along the sliding groove, so that a limiting plate is driven to be far away from a convex block, the limiting function on the convex block is relieved, at the moment, the convex block can be conveniently pulled out from a vertical rod, and the sinking rod is conveniently detached; therefore, the sinker bar can be replaced conveniently.

Description

Technical Field

[0001] The utility model relates to a travel switch, in particular to a contact type crane travel switch. Background Art

[0002] Contact crane travel switch, also known as limit switch or position switch, is an electrical switch used to control the direction, speed, travel or position of mechanical equipment. In cranes, this type of switch is particularly important to ensure safe operation, prevent excessive travel or unexpected movement, and thus protect equipment and personnel safety.

[0003] During long-term use, the impact rod of the travel switch will inevitably malfunction after multiple contacts and collisions with the crane, so it needs to be replaced. The existing impact rod is generally connected to the travel switch body by bolts or clamping. When the impact rod needs to be replaced, it is often necessary to use auxiliary tools such as screwdrivers to separate it from the travel switch body, which results in the defect of inconvenient disassembly and assembly.

[0004] Based on this, it is necessary to design a contact crane travel switch that is convenient for removing the striker rod from the travel switch body. Utility Model Content

[0005] The technical solution of the utility model is: a contact type crane travel switch, including a travel switch body, a striker, a protrusion, a connecting rod, a vertical rod, an annular disk and a fixing component, the striker is rotatably installed on the travel switch body, a connecting rod is arranged between the travel switch body and the striker, the connecting rod is fixed to the travel switch body, one end of the connecting rod away from the travel switch body is connected with the protrusion, the side of the striker facing the travel switch body is provided with an annular disk and a vertical rod, the protrusion penetrates into the annular disk and the center hole on the protrusion is movably matched with the vertical rod, and a fixing component for fixing the protrusion to realize the connection between the striker and the travel switch body is arranged on the annular disk.

[0006] In one of the embodiments, the fixing assembly includes a rotating plate, a U-shaped block, a slip ring, a limit plate, an annular guide rod and an elastic member. The annular disk is symmetrically provided with arc-shaped through grooves, the annular guide rod is arranged in the arc-shaped through groove, the rotating plate is slidably connected in the arc-shaped through groove, the annular guide rod slides through the rotating plate and the elastic member is wrapped around the annular guide rod, the end of the rotating plate that penetrates into the inner side of the annular disk is connected to the U-shaped block, the impact rod is provided with a sliding groove, the sliding groove is located on the inner side of the annular disk, the sliding groove is slidably connected to the slip ring, the right side of the U-shaped block is slidably connected to the slip ring, the end of the slip ring facing away from the U-shaped block is connected to the limit plate, and the limit plate is movably connected to the circumferential outer wall of the protrusion.

[0007] In one embodiment, a groove is provided on the circumferential outer wall of the protrusion, the longitudinal section of the protrusion is an "I"-shaped structure, and the end of the limit plate away from the slip ring penetrates into the groove of the circumferential outer wall of the protrusion and slides with the groove.

[0008] In one of the embodiments, it also includes a spare part, a clamping block and a limit block. The limit blocks are symmetrically installed on the side walls of the travel switch body, and clamping blocks are arranged on both sides of the spare part. The clamping blocks are clamped and matched with the limit blocks.

[0009] In one of the embodiments, a magnet is further included. A magnet is disposed at the bottom of the travel switch body for conveniently fixing the travel switch body on a metal plane.

[0010] In one of the embodiments, a rubber ring is further included. A rubber ring is provided at the wire access port of the travel switch body for fixing and limiting the guide.

[0011] Beneficial effect: by rotating the rotating plate, the rotating plate drives the U-shaped block to move along the annular guide rod. Since the slip ring is limited by the slide groove, the slip ring moves horizontally along the slide groove driven by the U-shaped block, thereby driving the limiting plate away from the protrusion, thereby releasing the limiting function of the protrusion. At this time, the protrusion can be easily pulled out from the vertical pole, thereby realizing convenient disassembly of the impact rod, thereby realizing convenient replacement of the impact rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model from the first viewing angle.

[0013] Figure 2 It is a schematic diagram of the partial cross-sectional three-dimensional structure of the utility model after being flipped 180 degrees from the first viewing angle.

[0014] Figure 3 This is a schematic diagram of the sectional three-dimensional structure of the annular disk after being flipped 180 degrees from the first viewing angle of this utility model.

[0015] Figure 4 It is a schematic diagram of a partial three-dimensional structure of the utility model from a second viewing angle.

[0016] Marked in the figure: 1-travel switch body, 2-strike rod, 21-bump, 22-slide groove, 3-connecting rod, 4-vertical rod, 5-turn plate, 6-U-shaped block, 7-slip ring, 8-limiting plate, 9-annular disk, 91-annular guide rod, 10-elastic part, 11-spare part, 12-block, 13-limiting block, 14-magnet, 15-rubber ring. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0018] Embodiment: A contact crane travel switch, such as Figure 1-Figure 3As shown, it includes a travel switch body 1, a striker 2, a protrusion 21, a connecting rod 3, a vertical rod 4, an annular disk 9 and a fixing assembly. The striker 2 is rotatably mounted on the travel switch body 1. A connecting rod 3 is arranged between the travel switch body 1 and the striker 2. The connecting rod 3 is fixed to the travel switch body 1. The end of the connecting rod 3 away from the travel switch body 1 is connected with the protrusion 21. The circumferential outer wall of the protrusion 21 is provided with a groove. The longitudinal section of the protrusion 21 is an "I"-shaped structure. The side of the striker 2 facing the travel switch body 1 is provided with an annular disk 9 and a vertical rod 4. The vertical rod 4 is detachably matched with the center hole on the protrusion 21. The protrusion 21 penetrates into the annular disk 9 and the center hole on the protrusion 21 is connected to the protrusion 21. The vertical pole 4 is movably cooperated, and the protrusion 21 can rotate relatively along the vertical pole 4, thereby realizing that the rotating rod 2 is rotatably installed on the travel switch body 1, and a return spring is arranged between the protrusion 21 and the impact rod 2, and the two ends of the return spring are respectively connected to the bottom end of the protrusion 21 and the impact rod 2, and the return spring is used for resetting the impact rod after it is contacted and hit by the crane and rotated. The specific arrangement of the return spring can be wound around the vertical pole 4, and the impact rod 2 is provided with a placement groove for placing the return spring on the side facing the protrusion 21, and a connecting block movably connected to the return spring is arranged at the bottom of the protrusion 21, and a fixing component for fixing the protrusion 21 to realize the connection between the impact rod 2 and the travel switch body 1 is arranged on the annular disk 9.

[0019] like Figure 3 As shown, the fixing assembly includes a rotating plate 5, a U-shaped block 6, a slip ring 7, a limit plate 8, an annular guide rod 91 and an elastic member 10. The annular plate 9 is symmetrically provided with arc-shaped through grooves, the annular guide rod 91 is arranged in the arc-shaped through groove, the rotating plate 5 is slidably connected in the arc-shaped through groove, the annular guide rod 91 slides through the rotating plate 5 and the elastic member 10 is wound around the annular guide rod 91, the two ends of the elastic member 10 are respectively connected to the groove wall of the arc-shaped through groove and the rotating plate 5, and the initial state of the elastic member 10 is as shown in FIG. Figure 3 As shown, the elastic member 10 can be a spring or a rubber member with elastic properties. As a preferred embodiment, the elastic member 10 described in this embodiment is a compression spring, and the end of the rotating plate 5 that penetrates into the inner side of the annular disk 9 is connected to a U-shaped block 6. A sliding groove 22 is provided on the impact rod 2, and the sliding groove 22 is located on the inner side of the annular disk 9. A slip ring 7 is slidably connected to the sliding groove 22. The U-shaped block 6 is slidably connected to the slip ring 7 and the U-shaped block 6 is limited in the elliptical groove of the slip ring 7, and the end points at both ends of the elliptical groove of the slip ring 7 are not at the same distance from the annular disk 9. The end of the slip ring 7 facing away from the U-shaped block 6 is connected to a limiting plate 8, and the end of the limiting plate 8 facing the protrusion 21 is arc-shaped, and the limiting plate 8 is clamped with the circumferential groove of the outer wall of the protrusion 21, and the limiting plate 8 is slidably matched with the outer wall of the protrusion 21.

[0020] like Figure 4As shown, it also includes a spare part 11, a clamping block 12 and a limit block 13. The limit block 13 is symmetrically installed on the side wall of the travel switch body 1. The clamping blocks 12 are arranged on both sides of the spare part 11. The clamping blocks 12 are engaged with the limit blocks 13. The spare part 11 is arranged as a backup of the impact rod 2, which provides convenience for the easy replacement of the impact rod 2.

[0021] like Figure 2 As shown, a magnet 14 is also included. The bottom end of the travel switch body 1 is provided with a magnet 14 for conveniently fixing the travel switch body 1 on a metal plane. The travel switch body 1 is also provided with a through hole for screws to pass through, so as to fix the travel switch body 1 on a non-metallic plane.

[0022] like Figure 1 and Figure 4 As shown, a rubber ring 15 is also included. The wire access port of the travel switch body 1 is provided with a rubber ring 15 for fixing and limiting the guide.

[0023] When in use, when the striker bar 2 is hit by the crane, the striker bar 2 rotates to Figure 3 For example, when the striker 2 rotates counterclockwise, the striker 2 drives the annular disk 9 to rotate counterclockwise. When the annular disk 9 rotates, under the action of the elastic force of the elastic member 10, the rotating plate 5 rotates counterclockwise with the annular disk 9, and the end of the rotating plate 5 drags the slip ring 7 to move, and the slip ring 7 drives the limiting plate 8 to slide counterclockwise along the circumferential groove outside the protrusion 21, thereby cutting off the circuit between the striker 2 and the travel switch body 1, so as to control the travel distance of the crane; when the striker 2 needs to be replaced, the rotating plate 5 is rotated clockwise to make the rotating plate 5 move along the annular guide rod 91 and compress the elastic member 10. When the rotating plate 5 slides along the annular guide rod 91, the rotating plate 5 drives the U-shaped block 6 to move synchronously. Since the slide groove 22 limits the slip ring 7, the slip ring 7 moves horizontally along the slide groove 22 driven by the U-shaped block 6, thereby driving the limiting plate 8 away from the circumferential direction of the protrusion 21 through the slip ring 7. The groove is formed, thereby releasing the limit on the protrusion 21. At this time, the striker 2 can be pulled in the direction away from the travel switch body 1, and the protrusion 21 is pulled out from the vertical rod 4, thereby realizing the convenient disassembly of the striker 2; during installation, the spare part 11 is first pushed in the direction away from the rubber ring 15, and the block 12 is away from the limit block 13, and the limit on the spare part 11 by the limit block 13 is released, thereby the spare part 11 is conveniently taken out, and then the center hole of the protrusion 21 on the spare part 11 is aligned with the vertical rod 4, and then the striker 2 is pushed in the direction of the travel switch body 1, so that the vertical rod 4 passes through the center hole of the protrusion 21, and then the force on the rotating plate 5 is released. Under the action of the elastic member 10, the rotating plate 5 is reset, thereby driving the U-shaped block 6, the slip ring 7 and the limit plate 8 to reset, thereby limiting the protrusion 21, thereby realizing the convenient installation of the striker 2.

[0024] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A contact type crane travel switch, comprising a travel switch body (1) and a striker (2), wherein the striker (2) is rotatably mounted on the travel switch body (1), characterized in that: The invention also comprises a protrusion (21), a connecting rod (3), a vertical rod (4), an annular disk (9) and a fixing assembly. A connecting rod (3) is arranged between the travel switch body (1) and the striker (2). The connecting rod (3) is fixed to the travel switch body (1). The end of the connecting rod (3) away from the travel switch body (1) is connected to the protrusion (21). The side of the striker (2) facing the travel switch body (1) is provided with an annular disk (9) and a vertical rod (4). The protrusion (21) is deeply inserted into the annular disk (9) and the center hole on the protrusion (21) is movably matched with the vertical rod (4). The annular disk (9) is provided with a fixing assembly for fixing the protrusion (21) to realize the connection between the striker (2) and the travel switch body (1).

2. A contact type crane travel switch as claimed in claim 1, characterized in that: The fixing assembly comprises a rotating plate (5), a U-shaped block (6), a slip ring (7), a stop plate (8), an annular guide rod (91) and an elastic member (10). The annular plate (9) is symmetrically provided with arc-shaped through grooves. The annular guide rod (91) is arranged in the arc-shaped through groove. The rotating plate (5) is slidably connected in the arc-shaped through groove. The annular guide rod (91) slides through the rotating plate (5) and the elastic member (10) is wound around the annular guide rod (91). The rotating plate ( 5) One end of the ring-shaped disk (9) is connected to a U-shaped block (6), a slide groove (22) is provided on the striker (2), the slide groove (22) is located on the inner side of the ring-shaped disk (9), a slip ring (7) is slidably connected to the slide groove (22), the right side of the U-shaped block (6) is slidably connected to the slip ring (7), one end of the slip ring (7) facing away from the U-shaped block (6) is connected to a limit plate (8), and the limit plate (8) is movably connected to the circumferential outer wall of the protrusion (21).

3. A contact type crane travel switch as claimed in claim 2, characterized in that: The circumferential outer wall of the protrusion (21) is provided with a groove, the longitudinal section of the protrusion (21) is an "I"-shaped structure, and the end of the limit plate (8) away from the slip ring (7) is deeply inserted into the groove of the circumferential outer wall of the protrusion (21) and slides in cooperation with the groove.

4. A contact type crane travel switch as claimed in claim 1, characterized in that: It also comprises a spare part (11), a clamping block (12) and a limit block (13); the limit block (13) is symmetrically mounted on the side wall of the travel switch body (1); clamping blocks (12) are arranged on both sides of the spare part (11); and the clamping blocks (12) and the limit blocks (13) are clamped and matched.

5. A contact type crane travel switch as claimed in claim 1, characterized in that: It also includes a magnet (14). The bottom end of the travel switch body (1) is provided with a magnet (14) for conveniently fixing the travel switch body (1) on a metal plane.

6. A contact type crane travel switch as claimed in claim 1, characterized in that: It also includes a rubber ring (15), and a rubber ring (15) for fixing and limiting the guide is arranged at the wire access port of the travel switch body (1).

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