Pulley

Abstract

The utility model discloses a pulley which comprises a supporting seat, the supporting seat comprises a top plate and two side plates arranged on the two sides of the top plate, the side plates are provided with guide grooves extending in the vertical direction, a supporting frame is installed between the two side plates, a roller is installed on the supporting frame, the supporting frame is connected with a first rotating shaft in a rotating mode, and the first rotating shaft is embedded in the guide grooves. A spring is installed between the supporting frame and the top plate. The supporting seat can have a space for up-down movement through the spring, the supporting frame can have a space for front-back swing through the first rotating shaft, and therefore the idler wheels are prevented from being stuck in the walking process.

Description

TECHNICAL FIELD

[0001] The utility model relates to walking device technical field, more specifically, it relates to a pulley. BACKGROUND

[0002] There may be a need to move in mechanical equipment, and the prior art usually installs a roller at the bottom of the part that needs to be moved, and then places the roller in a sliding groove for movement. When moving, the roller will contact between the side walls of the guide groove, causing the roller to be stuck, affecting the normal operation of the equipment. SUMMARY

[0003] The utility model discloses a pulley that can prevent sticking during walking to overcome the deficiencies of the prior art.

[0004] To achieve the above object, the utility model adopts the following technical scheme: a pulley, including support seat, the support seat includes top plate and two side plates on both sides of top plate, the side plate is provided with the guide groove along the vertical direction extension, two the side plate between installation has support frame, the support frame installs the roller, the support frame rotatably connects with first rotation axis, the first rotation axis inserts the guide groove, the support frame with the top plate between installation has spring.

[0005] Further, the guide groove extends to the side of the side plate towards the support frame and constitutes a guide opening, and the side of the side plate towards the support frame is provided with a first limiting plate blocking the guide opening.

[0006] Further, the top of the support seat is provided with a connecting groove, a guide column extending towards the top plate is installed in the connecting groove, and the spring is sleeved on the guide column.

[0007] Further, the support frame includes a support block, a bearing is installed at the center of the support block, and the first rotation axis is installed on the bearing.

[0008] Further, the support frame further includes a support plate placed on the support block, the support plate is placed on both sides of the support block and is provided with two on each side, and the roller is installed between the two support plates.

[0009] Further, the side of the support plate towards the outside is provided with a second limiting plate, the side of the support plate towards the outside is provided with a first half groove, the second limiting plate is provided with a second half groove, the first half groove and the second half groove are combined to form a limiting groove, the roller is provided with a second rotation axis, and the second rotation axis is inserted into the limiting groove.

[0010] In summary, the utility model has the following beneficial effects:

[0011] The center rotation of the support frame is connected to the first rotating shaft, the support seat is provided with a guide groove, the first rotating shaft is embedded in the guide groove, and a spring is provided between the support frame and the support seat. The spring can enable the support seat to have space to move up and down, and the first rotating shaft can enable the support frame to have space to swing back and forth, thereby preventing the roller from getting stuck during walking. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Fig. 1 It is a structural diagram of the utility model;

[0013] Fig. 2 It is an exploded view of the utility model;

[0014] Figure markings: support seat 100, top plate 110, side plate 120, guide groove 121, first limit plate 130, spring 140, support frame 200, support block 210, support plate 220, second limit plate 221, first half groove 230, second half groove 240, second rotating shaft 250, limit groove 251, guide column 260, connecting groove 261, roller 270, first rotating shaft 300, bearing 310. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] See Figs. 1-2 A pulley includes a support base 100 and a support frame 200. The support base 100 is used to connect the device, and the support frame 200 is installed on the support base 100. The support base 100 includes a top plate 110 and side plates 120 placed on both sides of the top plate 110. Guide grooves 121 are opened on the two side plates 120. The support frame 200 includes a support block 210, and rollers 270 for walking are installed on both sides of the support block 210. A bearing 310 is installed in the center of the support block 210, and a first rotating shaft 300 is installed in the center of the bearing 310. The two ends of the first rotating shaft 300 are respectively embedded in the guide grooves 121 of the two side panels 120, so that the support base 100 can move in the vertical direction relative to the support base 100. At the same time, the support block 210 itself can swing around the first rotating shaft 300 as the center, so that the support base 100 has a certain range of motion. The angle between the roller 270 and the walking surface can be adjusted by the up and down movement or the successive swinging of the support base 100 itself, thereby preventing it from getting stuck during walking.

[0017] The guide groove 121 extends to the side of the side panel 120 facing the support frame 200, forming a guide opening on this side. The first rotating shaft 300 is inserted into the guide groove 121 through the guide opening. A first stopper plate 130 is also mounted on the side of the side panel 120 facing the support frame 200 via fasteners. When connected to the side panel 120, the first stopper plate 130 blocks the guide opening, thereby limiting the range of movement of the first rotating shaft 300 and preventing it from slipping out of the guide groove 121.

[0018] The top of the support base 100 is provided with a connecting groove 261, into which a guide post 260 is mounted, extending toward the top plate 110. A spring 140 is sleeved on the guide post 260. As the support frame 200 moves along the guide groove 121, the spring 140 compresses or expands accordingly. The guide post 260 ensures the stability of the spring 140 in its expansion and contraction directions, preventing it from deflecting.

[0019] Two support plates 220 are provided on either side of the support block 210 in the longitudinal direction, and the roller 270 is mounted between the two support plates 220. Specifically, a second stopper plate 221 is provided on the outward side of the support plate 220, and a first half-slot 230 is provided on the outward side of the support plate 220. The second stopper plate 221 is provided with a second half-slot 240 that mates with the first half-slot 230. The first half-slot 230 and the second half-slot 240 together form a stopper slot 251. A second rotating shaft 250 is mounted at the center of the roller 270, and the second rotating shaft 250 is inserted into the stopper slot 251, thereby connecting the roller 270 to the support plate 220.

[0020] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A pulley, characterized in that: The invention comprises a support base (100), wherein the support base (100) comprises a top plate (110) and two side plates (120) arranged on both sides of the top plate (110), wherein the side plates (120) are provided with guide grooves (121) extending in a vertical direction, a support frame (200) is installed between the two side plates (120), wherein the support frame (200) is provided with a roller (270), wherein the support frame (200) is rotatably connected to a first rotating shaft (300), wherein the first rotating shaft (300) is embedded in the guide groove (121), and a spring (140) is installed between the support frame (200) and the top plate (110).

2. A pulley according to claim 1, characterized in that: The guide groove (121) extends to one side of the side plate (120) facing the support frame (200) and forms a guide opening. A first limiting plate (130) for blocking the guide opening is provided on one side of the side plate (120) facing the support frame (200).

3. A pulley according to claim 1, characterized in that: A connecting groove (261) is provided on the top of the support seat (100), a guide column (260) extending toward the top plate (110) is installed in the connecting groove (261), and the spring (140) is sleeved on the guide column (260).

4. A pulley according to claim 1, characterized in that: The support frame (200) comprises a support block (210), a bearing (310) is installed at the center of the support block (210), and the first rotating shaft (300) is installed on the bearing (310).

5. A pulley according to claim 4, characterized in that: The support frame (200) further comprises a support plate (220) placed on the support block (210), wherein the support plates (220) are placed on both sides of the support block (210) and two plates are provided on each side, and the roller (270) is installed between the two support plates (220).

6. A pulley according to claim 5, characterized in that: The support plate (220) is provided with a second limiting plate (221) on one side facing outward, the support plate (220) is provided with a first half groove (230) on one side facing outward, the second limiting plate (221) is provided with a second half groove (240), the first half groove (230) and the second half groove (240) are combined to form a limiting groove (251), the roller (270) is installed with a second rotating shaft (250), and the second rotating shaft (250) is inserted into the limiting groove (251).

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