Chain tensioning structure of trolley

Abstract

The utility model relates to the technical field of trolley chains, and discloses a trolley chain tensioning structure which comprises a trolley body, the two ends of the outer walls of the two sides of the trolley body are rotationally connected with advancing wheels used for advancing, and a chain body is arranged on the two advancing wheels on the same side in a surrounding mode. The tensioning wheel is rotationally connected to the middle of the outer wall of the trolley body, a tensioning part used for tensioning the chain body is arranged on the tensioning wheel, a contact block and a connecting block are arranged in the tensioning part, the chain body is wound on the contact block and the connecting block, an adjusting part used for adjusting the tensioning part is arranged in the tensioning wheel, and the chain body is arranged in the adjusting part. An adjusting rod, a rotary knob, a transmission rod and a lead screw are arranged in the adjusting part. According to the chain, the tensioning wheel is arranged, so that the chain body can be conveniently tensioned, and the situation that the chain body is loosened due to contact with the advancing wheel, the chain body is abraded in the rotating process, and the service life of the chain body is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of trolley chains, in particular to a chain tensioning structure of a trolley. Background Art

[0002] The chain tensioner of the trolley is a key mechanical component, which is designed to ensure stable operation and proper tension of the chain.

[0003] The existing tensioning structure is complicated to adjust during use, and multiple bolts need to be adjusted to adjust the tension of the chain, which is very inconvenient and easy to become loose between the traveling wheels, causing the chain to wear during operation, thus affecting its service life.

[0004] For this purpose, we propose a chain tensioning structure for a trolley. Utility Model Content

[0005] The utility model mainly solves the technical problem of complicated adjustment of a tensioning structure and provides a chain tensioning structure of a trolley.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a chain tensioning structure of a trolley, comprising:

[0007] The trolley body has two outer walls on both sides of the trolley body, both ends of which are rotatably connected to traveling wheels for traveling, and a chain body is arranged around the two traveling wheels on the same side;

[0008] A tensioning wheel is rotatably connected to the middle of the outer wall of the trolley body. The tensioning wheel is provided with a tensioning part for tightening the chain body. The tensioning part includes a contact block and a connecting block. The chain body is wound around the contact block and the connecting block. The tensioning wheel is provided with an adjusting part for adjusting the tensioning part. The adjusting part includes an adjusting rod, a knob, a transmission rod and a screw rod.

[0009] Furthermore, the tensioning wheel is provided with a plurality of sliding grooves arranged in a circumferential manner on the vertical axial inner wall, the adjusting rod is slidably connected to the inner wall of the sliding groove, the contact block is fixedly connected to the axial position of one end of the adjusting rod, and a penetrating rotating groove is provided on the inner wall of the contact block, and both ends of the connecting block are slidably connected to the inner walls of two adjacent rotating grooves.

[0010] Furthermore, an adjustment groove is provided on the axial inner wall of the tensioning wheel, a first rotating hole is provided at one end of the adjustment groove, one end of the transmission rod is rotatably connected to the axial position of the adjustment groove, the other end of the transmission rod is rotatably connected to the inner wall of the first rotating hole, the knob is fixedly connected to the axial position of the transmission rod, and a first bevel gear is fixedly connected to the outer wall of the transmission rod.

[0011] Furthermore, a threaded hole is provided at one end of the adjusting rod near the adjusting groove, and a second rotating hole is provided at the axis of the threaded hole, the second rotating hole extends to the inner wall of the adjusting groove, the screw rod is threadedly connected to the inner wall of the threaded hole and rotatably connected to the inner wall of the second rotating hole, and a second bevel gear meshing with the first bevel gear is fixedly connected in an axial position near one end of the screw rod.

[0012] Furthermore, the inner walls on both sides of the sliding groove are provided with limiting grooves, and the outer walls on both sides of the adjusting rod are fixedly connected with guide rails, and the guide rails are slidably connected to the inner walls of the limiting grooves.

[0013] Furthermore, the other end of the tensioner wheel is fixedly connected to a rotating shaft at an axial position, and the rotating shaft is rotatably connected to a middle position of an outer wall of the trolley body.

[0014] Furthermore, a protrusion is provided in the middle of the outer wall of the connecting block, and the protrusion and the contact block are respectively provided with a first tooth groove and a second tooth groove away from the axial direction of the tensioning wheel. The first tooth groove and the second tooth groove are at the same distance from the axis of the tensioning wheel, and the chain body is engaged with the first tooth groove and the second tooth groove.

[0015] Beneficial Effects

[0016] The utility model provides a chain tensioning structure for a trolley, which has the following beneficial effects:

[0017] (1) The chain tensioning structure of the trolley can conveniently tighten the chain body through the tensioning wheel, thereby preventing the chain body from loosening in contact with the traveling wheel, causing wear of the chain body during rotation, and affecting the service life of the chain body.

[0018] (2) The chain tensioning structure of the trolley can keep the contact block and the connecting block at the same distance from the tensioner wheel axis during adjustment by means of the contact block and the connecting block, thereby keeping the chain body and the first tooth groove fully engaged with the second tooth groove, thereby avoiding looseness during operation and affecting the normal operation of the chain body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the front view of the utility model;

[0020] Figure 2 This is a detailed diagram of the tensioning assembly of the utility model;

[0021] Figure 3 This is a cross-sectional view of the tensioning component of the utility model;

[0022] Figure 4 For this utility model Figure 3 A magnified view of part A;

[0023] Figure 5 This is a detailed diagram of the tightening part of the utility model;

[0024] Figure 6 This is a detailed view of the adjusting rod of the utility model.

[0025] Legend: 1. Trolley body; 2. Traveling wheel; 3. Chain body; 4. Tensioner wheel; 5. Contact block; 6. Adjusting rod; 7. Connecting block; 8. Knob; 9. Rotating shaft; 10. Adjusting slot; 11. Transmission rod; 12. First bevel gear; 13. Second bevel gear; 14. Screw rod; 15. Sliding slot; 16. Limiting slot; 17. First tooth slot; 18. Rotating slot; 19. Protrusion; 20. Second tooth slot; 21. Guide rail. DETAILED DESCRIPTION

[0026] Embodiment 1: A chain tensioning structure of a trolley, such as Figure 1 , Figure 2 and Figure 3 Shown, including

[0027] A trolley body 1, both ends of the outer walls of the trolley body 1 are rotatably connected with traveling wheels 2 for traveling, and a chain body 3 is arranged around the two traveling wheels 2 on the same side;

[0028] The tensioning wheel 4 is rotatably connected to the middle of the outer wall of the trolley body 1. The tensioning wheel 4 is provided with a tensioning part for tightening the chain body 3. The tensioning part includes a contact block 5 and a connecting block 7. The chain body 3 is wound around the contact block 5 and the connecting block 7. The tensioning wheel 4 is provided with an adjusting part for adjusting the tensioning part. The adjusting part includes an adjusting rod 6, a knob 8, a transmission rod 11 and a screw rod 14.

[0029] A plurality of sliding grooves 15 arranged in a circumferential manner are provided on the inner wall of the tensioning wheel 4 in the vertical axial direction, the adjusting rod 6 is slidably connected to the inner wall of the sliding groove 15, the contact block 5 is fixedly connected to the axial position of one end of the adjusting rod 6, and a penetrating rotating groove 18 is provided on the inner wall of the contact block 5, and both ends of the connecting block 7 are slidably connected to the inner walls of two adjacent rotating grooves 18.

[0030] like Figure 4 As shown, an adjustment groove 10 is opened on the axial inner wall of the tensioning wheel 4, a first rotating hole is opened at one end of the adjustment groove 10, one end of the transmission rod 11 is rotatably connected to the axial position of the adjustment groove 10, and the other end of the transmission rod 11 is rotatably connected to the inner wall of the first rotating hole, the knob 8 is fixedly connected to the axial position of the transmission rod 11, and a first bevel gear 12 is fixedly connected to the outer wall of the transmission rod 11.

[0031] A threaded hole is opened at one end of the adjusting rod 6 close to the adjusting groove 10, and a second rotating hole is opened at the axis of the threaded hole, the second rotating hole extends to the inner wall of the adjusting groove 10, the screw rod 14 is threadedly connected to the inner wall of the threaded hole and rotatably connected to the inner wall of the second rotating hole, and the second bevel gear 13 meshing with the first bevel gear 12 is fixedly connected in the axial position of one end of the screw rod 14 close to the transmission rod 11.

[0032] like Figure 4 and Figure 6 As shown, the inner walls on both sides of the sliding groove 15 are provided with limiting grooves 16 , and the outer walls on both sides of the adjusting rod 6 are fixedly connected with guide rails 21 , and the guide rails 21 are slidably connected to the inner walls of the limiting grooves 16 .

[0033] The other end of the tensioner wheel 4 is fixedly connected to a rotating shaft 9 at an axial position, and the rotating shaft 9 is rotatably connected to the middle position of the outer wall of the trolley body 1 .

[0034] like Figure 5 As shown, a protrusion 19 is provided in the middle of the outer wall of the connecting block 7, and the protrusion 19 and the contact block 5 are respectively provided with a first tooth groove 17 and a second tooth groove 20 axially away from the tensioner 4. The first tooth groove 17 and the second tooth groove 20 are at the same distance from the axis of the tensioner 4, and the chain body 3 is engaged with the first tooth groove 17 and the second tooth groove 20.

[0035] By setting the contact block 5 and the connecting block 7, the contact block 5 and the connecting block 7 can be kept at the same distance from the axis of the tensioner wheel 4 during adjustment, and the chain body 3 and the first tooth groove 17 are kept fully engaged with the second tooth groove 20 to avoid looseness during operation and affect the normal operation of the chain body 3.

[0036] In summary, the tensioning wheel 4 is provided to conveniently tighten the chain body 3 to prevent the chain body 3 from loosening in contact with the traveling wheel 2, causing wear of the chain body 3 during rotation and affecting the service life of the chain body 3.

[0037] The working principle of the utility model is as follows: when the chain body 3 needs to be tightened, the knob 8 is turned at this time, and the knob 8 can drive the second bevel gear 13 meshing with the first bevel gear 12 to rotate through the transmission rod 11 and the first bevel gear 12, and then drive the screw rod 14 on the second bevel gear 13 to rotate, and the screw rod 14 can drive the adjusting rod 6 threadedly connected thereon to slide in the sliding groove 15, and then drive the position of the contact block 5 to change, and the contact block 5 moves, which can drive the connecting block 7 therein to slide in the rotating groove 18 in the contact block 5, so that the distance between the contact block 5 and the connecting block 7 and the axis line can be adjusted, and then the vertical distance of the chain body 3 is adjusted, and the chain body 3 is tightened.

[0038] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A chain tensioning structure for a trolley, characterized in that: include: A trolley body (1), both ends of the outer walls of both sides of the trolley body (1) are rotatably connected to traveling wheels (2) for traveling, and a chain body (3) is arranged around the two traveling wheels (2) on the same side; A tensioning wheel (4) is rotatably connected to the middle of the outer wall of the trolley body (1); the tensioning wheel (4) is provided with a tensioning portion for tensioning the chain body (3); the tensioning portion includes a contact block (5) and a connecting block (7); the chain body (3) is wound around the contact block (5) and the connecting block (7); the tensioning wheel (4) is provided with an adjusting portion for adjusting the tensioning portion; the adjusting portion includes an adjusting rod (6), a knob (8), a transmission rod (11) and a screw rod (14).

2. The chain tensioning structure of the trolley according to claim 1, characterized in that: The tension wheel (4) has a plurality of sliding grooves (15) arranged in a circumferential manner on its vertical axial inner wall, the adjusting rod (6) is slidably connected to the inner wall of the sliding groove (15), the contact block (5) is fixedly connected to the axial position of one end of the adjusting rod (6), and a through rotation groove (18) is formed on the inner wall of the contact block (5), and the two ends of the connecting block (7) are slidably connected to the inner walls of two adjacent rotation grooves (18).

3. The chain tensioning structure of the trolley according to claim 2, characterized in that: The tension wheel (4) has an adjustment groove (10) on its axial inner wall, a first rotation hole is formed at one end of the adjustment groove (10), one end of a transmission rod (11) is rotationally connected to the axial position of the adjustment groove (10), the other end of the transmission rod (11) is rotationally connected to the inner wall of the first rotation hole, the knob (8) is fixedly connected to the axial position of the transmission rod (11), and the outer wall of the transmission rod (11) is fixedly connected to a first bevel gear (12).

4. The chain tensioning structure of the trolley according to claim 3, characterized in that: The adjusting rod (6) is provided with a threaded hole at one end close to the adjusting groove (10), and a second rotating hole is provided at the axis of the threaded hole, the second rotating hole extends to the inner wall of the adjusting groove (10), the screw rod (14) is threadedly connected to the inner wall of the threaded hole and is rotatably connected to the inner wall of the second rotating hole, and the screw rod (14) is fixedly connected to the axial position of one end close to the transmission rod (11) with a second bevel gear (13) meshing with the first bevel gear (12).

5. The chain tensioning structure of the trolley according to claim 4, characterized in that: The inner walls on both sides of the sliding groove (15) are provided with limiting grooves (16), and the outer walls on both sides of the adjusting rod (6) are fixedly connected with guide rails (21), and the guide rails (21) are slidably connected to the inner walls of the limiting grooves (16).

6. The chain tensioning structure of the trolley according to claim 1, characterized in that: The other end of the tensioning wheel (4) is fixedly connected to a rotating shaft (9) at an axial position, and the rotating shaft (9) is rotatably connected to a middle position of an outer wall of the trolley body (1).

7. The chain tensioning structure of the trolley according to claim 1, characterized in that: A protrusion (19) is provided in the middle of the outer wall of the connecting block (7); a first tooth groove (17) and a second tooth groove (20) are respectively provided at the protrusion (19) and the contact block (5) away from the axial direction of the tensioning wheel (4); the first tooth groove (17) and the second tooth groove (20) are at the same distance from the axis of the tensioning wheel (4); and the chain body (3) is meshed with the first tooth groove (17) and the second tooth groove (20).

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