Transportation device

Abstract

The utility model relates to a kind of transport equipment, it is used to transport hollow cylindrical workpiece, especially gear, transport equipment includes matrix, for the multiple expansion blocks of workpiece on the inner circumferential surface of workpiece and the multiple claw pieces of workpiece on the outer circumferential surface of workpiece are expanded tightly, expansion block can be with central axis as reference along radial direction relative to matrix movement, claw piece can be with central axis as reference along radial direction and axial direction relative to matrix movement. Here, each of claw piece includes rocker arm and protruding portion respectively, rocker arm extends in parallel with central axis. Here, protruding portion is arranged on the lower end region of rocker arm and extends from rocker arm along radial direction towards central axis.

Description

Technical Field

[0001] This utility model relates to a transport device for transporting hollow cylindrical workpieces, particularly gears, and the transport device includes a plurality of expansion blocks / support blocks for expanding / supporting the workpieces. Background Technology

[0002] The drive for the machine has a motor and a reducer / transmission. The motor drives the machine through the reducer. The reducer includes multiple meshing gears arranged within a housing. The housing includes multiple housing components that are connected to each other and surround a cavity in which the gears are arranged. Here, the gears are positioned on a rotatable shaft.

[0003] Gears are produced during the manufacturing of speed reducers in the production workshop and then transported to a workstation for further processing. The gears are designed as hollow cylinders with a central bore for a shaft to pass through. The workstation is, for example, a measuring station for measuring the gears or an assembly station where the gears are placed in a housing.

[0004] Especially when gears are relatively large and heavy, transporting them to the workstation is laborious and sometimes even dangerous. For example, cranes or autonomous vehicles are used as transport equipment to move gears. In this case, there is a risk that the gear may detach from the transport equipment, fall off, and be damaged during transport to the workstation, potentially injuring workers in the production workshop. Utility Model Content

[0005] The purpose of this invention is to provide an improved transport device for transporting workpieces.

[0006] This objective is achieved through transport equipment having the following characteristics.

[0007] The conveying device according to this utility model for transporting hollow cylindrical workpieces, especially gears, includes a base, a plurality of clamping blocks for clamping the workpiece on its inner circumferential surface, and a plurality of claws for clamping the workpiece on its outer circumferential surface. The clamping blocks are movable radially relative to the base with respect to a central axis, and the claws are movable radially and axially relative to the base with respect to the central axis. Each of these claws includes a rocker arm and a protrusion, the rocker arm extending parallel to the central axis. The protrusion is located on the lower end region of the rocker arm and extends radially from the rocker arm toward the central axis.

[0008] When the workpiece is received in the transport equipment, the clamping blocks abut against the inner circumferential surface of the workpiece and apply force to the inner circumferential surface of the workpiece in the radial direction. Thus, the workpiece is forcefully locked in place by the clamping blocks. Furthermore, the protrusions of the claws are located below the workpiece, so that in the event of insufficient force locking between the clamping blocks and the workpiece, causing the workpiece to detach from the clamping blocks, these protrusions can protect the workpiece from falling.

[0009] Therefore, the transport equipment according to this utility model significantly reduces the risk of workpieces becoming loose and falling during transport to the workstation, thus being damaged or even injuring workers in the production workshop.

[0010] According to an advantageous design of this invention, the transport device includes a first drive unit for driving the claws radially and axially relative to the base. Here, the first drive unit can be operated electrically and / or hydraulically and / or pneumatically.

[0011] The first drive unit enables the claw to move rapidly and precisely relative to the base.

[0012] According to an advantageous design of this invention, the transport device includes a second drive unit for driving the expansion block radially relative to the base. Here, the second drive unit can be operated electrically and / or hydraulically and / or pneumatically.

[0013] The second drive unit enables the expansion block to move rapidly and precisely relative to the substrate.

[0014] According to an advantageous design of this invention, each of the claws is connected to the base via a linkage / coupling mechanism. Here, each linkage is constructed as a four-bar linkage.

[0015] A four-bar linkage has a given number of mechanical degrees of freedom, which gives it flexibility in accepting workpieces while also providing robustness against interference.

[0016] According to an advantageous design of this utility model, each linkage transmission mechanism has a first link and a second link. These links are respectively hinged to the claw member. These links are also respectively hinged to the base body.

[0017] According to an advantageous design of this invention, each link can swing relative to the claw about a first swing axis, and each link can also swing relative to the base about a second swing axis. Here, these swing axes extend tangentially with respect to the central axis.

[0018] According to an advantageous design of this invention, each linkage mechanism has a drive rod hinged to a corresponding first link. The linkage mechanism is configured such that axial movement of the drive rod relative to the base causes corresponding pawl movements relative to the base in both the radial and axial directions.

[0019] According to an advantageous design of this invention, each drive rod can swing relative to its corresponding first link about a third swing axis. Here, the third swing axis extends tangentially with respect to the central axis.

[0020] According to an advantageous design of the present invention, the transport device includes exactly three expansion blocks, which are arranged 120° apart from each other around the central axis.

[0021] The three expansion blocks that abut against the inner circumference of the workpiece ensure the static stability of the workpiece received in the transport equipment.

[0022] According to an advantageous design of the present invention, the transport device includes exactly three claws, which are arranged 120° apart from each other around the central axis.

[0023] The three claws that abut against the outer circumference of the workpiece ensure the static determinism of the workpiece being received in the transport equipment.

[0024] According to an advantageous design of the present invention, each tightening block is arranged around the central axis in a manner that is offset by 60° relative to the nearest claw.

[0025] Therefore, collisions between the expansion block and the claw are avoided.

[0026] According to an advantageous design of this invention, the transport device includes a retaining element at which the transport device can be suspended. Here, the retaining element is connected to the base in a manner that prevents relative rotation and movement.

[0027] According to an advantageous design of this invention, the transport device includes a positioning aid for marking the placement position of a workpiece. Here, the positioning aid has at least one laser pointer.

[0028] Positioning aids enable transport equipment to accurately position workpieces when receiving them. Positioning aids also enable precise positioning of workpieces when unloading them from the transport equipment.

[0029] According to an advantageous design of the present invention, the transport equipment includes an electric accumulator for supplying a first drive unit and / or for supplying a second drive unit, and / or includes a compressed air tank, and / or includes a hydraulic tank.

[0030] According to an advantageous design of the present invention, the transport device includes an inductive coupling head (Übertragerkopf) for inductively receiving energy to power an electric energy storage device.

[0031] According to an advantageous design of the present invention, the transport equipment includes a compressed air interface for supplying compressed air to a compressed air tank.

[0032] According to an advantageous design of this utility model, the transport equipment includes a hydraulic interface for supplying hydraulic medium to a hydraulic tank.

[0033] This invention is not limited to the above-described combination of features. Those skilled in the art, particularly those seeking to achieve their intended purpose and / or through comparison with the prior art, can discern other reasonable combinations of the above-described features and / or individual features described above and / or features described below and / or features in the accompanying drawings. Attached Figure Description

[0034] The present invention will now be explained in detail with reference to the accompanying drawings. The present invention is not limited to the embodiments shown in the drawings. The drawings are merely schematic representations of the subject matter of the present invention. Wherein:

[0035] Figure 1 A perspective view of the transportation equipment is shown;

[0036] Figure 2 A top view of the transportation equipment is shown.

[0037] List of reference numerals in the attached diagram:

[0038] 1. Operation Unit

[0039] 2 Claws

[0040] 3. Laser pointer

[0041] 4 First Drive Unit

[0042] 5. Expansion block

[0043] 6 Second drive unit

[0044] 10 Matrix

[0045] 16 Holding elements

[0046] 27 Rocker arm

[0047] 28. Protrusion

[0048] 51 First Link

[0049] 52 Second Link

[0050] 57 pillars

[0051] M Central axis Detailed Implementation

[0052] Figure 1 This diagram shows a perspective view of a transport device for transporting hollow cylindrical workpieces, particularly gears. The transport device includes a base 10, which is constructed in a multi-piece configuration. A central axis M extends approximately through the base 10 at its center.

[0053] A hollow cylindrical workpiece has an inner circumferential surface and an outer circumferential surface. The inner circumferential surface is formed, for example, through a central hole with an approximately circular cross-section. In the case of a gear with external teeth, the outer circumferential surface is formed by the outer end regions of the external teeth.

[0054] The transport device includes a retaining element 16. The retaining element 16 is connected to the base 10 in a manner that prevents relative rotation and movement. The transport device may be suspended at the retaining element 6, for example, from a crane or a robotic arm.

[0055] The transport device includes multiple tensioning blocks 5 for tightening the workpiece on its inner circumferential surface. The tensioning blocks 5 are movable radially relative to the base 10 with respect to the central axis M. The transport device here includes exactly three tensioning blocks 5, which are arranged 120° offset from each other around the central axis M.

[0056] The transport device includes multiple jaws 2 for clamping the workpiece on its outer circumferential surface. The jaws 2 are movable relative to the base 10 in both radial and axial directions, with the central axis M as a reference. The transport device here includes exactly three jaws 2, which are arranged 120° apart from each other around the central axis M.

[0057] Here, the expansion blocks 5 are arranged around the central axis M at a 60° offset relative to the claw 2. The hollow cylindrical workpiece received in the transport device is oriented such that the inner and outer circumferential surfaces of the workpiece coaxially surround the central axis M of the transport device.

[0058] Each claw member 2 includes a rocker arm 27 extending parallel to the central axis M. Each claw member 2 also includes a protrusion 28. Here, the protrusion 28 is arranged on the lower end region of the rocker arm 27. The protrusion 28 extends radially from the rocker arm 27 toward the central axis M.

[0059] The transport equipment is oriented in the illustration shown here such that the central axis M extends at least approximately vertically, i.e., perpendicular to the ground. Here, the lower end region of the rocker arm 27 faces the ground. In the illustration shown here, no workpiece is received in the transport equipment.

[0060] When the workpiece is received in the transport equipment, the expansion block 5 abuts against the inner circumferential surface of the workpiece. Here, the expansion block 5 applies force to the inner circumferential surface of the workpiece in the radial direction. As a result, the workpiece is forcefully received by the expansion block 5.

[0061] When the workpiece is received in the transport equipment, the protrusion 28 of the claw 2 is located below the hollow cylindrical workpiece, that is, between the workpiece and the ground. The rocker arm 27 of the claw 2 surrounds the workpiece received in the transport equipment. Therefore, the outer peripheral surface of the workpiece is located radially between the rocker arm 27 and the central axis M. Therefore, in the event that the force locking between the tightening block 5 and the workpiece is insufficient and the workpiece is about to detach from the tightening block 5, the protrusion 28 of the claw 2 provides fall protection for the workpiece.

[0062] The claw members 2 are connected to the base 10 via linkage mechanisms. Therefore, each linkage mechanism is equipped with one claw member 2. Here, the linkage mechanism is constructed as a four-bar linkage. Each linkage mechanism has a first link 51 and a second link 52.

[0063] The first link 51 and the second link 52 of each linkage mechanism are respectively hinged to the rocker arm 27 of the corresponding claw 2. Therefore, the links 51 and 52 of the linkage mechanism are respectively hinged to the corresponding claw 2.

[0064] The first link 51 and the second link 52 of each linkage mechanism can swing relative to the claw 2 about a swing axis. The swing axes extend tangentially with respect to the central axis M. These swing axes are located on the upper end region of the rocker arm 27 of the claw 2. Here, the upper end region of the rocker arm 27 faces away from the ground.

[0065] The base 10 has multiple supports 57, in this case three. The supports 57 extend substantially parallel to the central axis M. Each linkage mechanism is equipped with one support 57. The first link 51 and the second link 52 of each linkage mechanism are also hinged to the corresponding support 57 of the base 10. Therefore, the links 51 and 52 of the linkage mechanism are respectively hinged to the base 10.

[0066] The first link 51 and the second link 52 of each linkage mechanism can swing relative to the base 10 about a swing axis. These swing axes extend tangentially with respect to the central axis M.

[0067] The linkage mechanism has a drive rod 55. The drive rod 55 is hinged to the first link 51. The linkage mechanism is configured such that movement of the drive rod 55 in the axial direction relative to the base 10 causes movement of the claw 2 in the radial and axial directions relative to the base 10.

[0068] Each linkage's drive rod 55 is capable of swinging relative to the first link 51 about a swing axis. This swing axis extends tangentially with respect to the central axis M.

[0069] The transport device includes a first drive unit 4 for driving the claw 2 relative to the base 10 in both the radial and axial directions. The first drive unit 4 is configured as an electric cylinder and is therefore electrically operable.

[0070] The first drive unit 4, configured as an electric cylinder, includes a cylinder body and a push rod movable relative to the cylinder body. The push rod is partially located within the cylinder body and partially extends from it. The first drive unit 4 also includes a motor for driving the push rod relative to the cylinder body.

[0071] The cylinder of the first drive unit 4 is connected to the base 10 in a manner that prevents relative rotation and movement. The push rod of the first drive unit 4 is connected to the drive rod 55 of the linkage mechanism. The first drive unit 4 is arranged such that the push rod can move parallel to the central axis M relative to the cylinder and relative to the base 10.

[0072] The transport device also includes a second drive unit 6 for driving the tensioning block 5 in the radial direction relative to the base 10. The second drive unit 6 is configured here as a compressed air cylinder and is therefore pneumatically operable.

[0073] In the illustration shown here, as already mentioned, no workpiece is received in the transport equipment. The tensioning block 5 is in the retracted position, i.e., internally in the radial direction. The claw 2 is in the upper position, away from the ground, i.e., upwards in the axial direction.

[0074] In order to receive the hollow cylindrical workpiece, the transport device and the workpiece are positioned relative to each other such that the expansion block 5 is located inside the center hole of the workpiece, and the inner circumferential surface of the workpiece at least approximately coaxially surrounds the central axis M of the transport device.

[0075] Then, the second drive unit 6 is driven to move the clamping block 5 radially outward relative to the base 10. Here, the clamping block 5 moves outward until it abuts against the inner circumferential surface of the workpiece. Thus, the clamping block 5 applies force to the inner circumferential surface of the workpiece radially. As a result, the workpiece is forcefully received by the clamping block 5.

[0076] Then, the first drive unit 4 is driven to move the push rod further outward from the cylinder. As a result, the various drive rods 55 of the linkage mechanism move synchronously approximately downward along the central axis M, i.e., toward the ground. These drive rods 55 thus cause the respective first links 51 to swing synchronously about their respective swing axes relative to the support 57 of the base 10.

[0077] Due to the aforementioned swinging motion of the first link 51, each of the second links 52 also swings relative to the support 57 of the base 10 around its corresponding swing axis. Therefore, each claw 2 moves synchronously relative to the base 10 in both the radial and axial directions.

[0078] Here, the claw 2 moves downward axially, i.e., toward the ground. First, the claw 2 moves outward radially, i.e., away from the central axis M. With connecting rods 51 and 52 oriented perpendicular to the central axis M, the claw 2 is in its outer position. In this outer position, the claw 2 is furthest from the central axis M. Subsequently, the claw 2 moves inward radially again, i.e., toward the central axis M. The movement of the claw 2 stops when its rocker arm 27 abuts against the outer circumferential surface of the workpiece. In this position, the protrusion 28 of the claw 2 is located below the workpiece.

[0079] Figure 2 Show Figure 1 The diagram shows a top view of the transport equipment. The transport equipment includes an operating unit 1 for controlling the first drive unit 4 and the second drive unit 6.

[0080] Furthermore, the transport equipment includes a positioning aid for marking the placement position of the workpiece. Here, the positioning aid has two laser pointers 3. The laser pointers 3 are mounted on the base 10 and oriented such that the laser beam emitted by the laser pointers 3 extends parallel to the central axis M downwards, i.e., toward the ground.

Claims

1. A transport device for transporting hollow cylindrical workpieces, the transport device comprising: Matrix (10) Multiple expansion blocks (5) are used to expand the workpiece on its inner circumferential surface. These expansion blocks are movable radially relative to the base (10) with respect to the central axis (M). Multiple jaws (2) are used to clamp the workpiece on its outer circumferential surface. The jaws are movable relative to the base (10) in both radial and axial directions with respect to the central axis (M). Each of these claw components (2) includes a rocker arm (27) and a protrusion (28), the rocker arm extending parallel to the central axis (M). The protrusion (28) is arranged on the lower end region of the rocker arm (27) and extends radially toward the central axis from the rocker arm (27).

2. The transportation equipment according to claim 1, Its features are, The transport equipment includes a first drive unit (4) for driving the claw (2) in the radial and axial directions relative to the base (10). The first drive unit (4) can be operated electrically and / or hydraulically and / or pneumatically.

3. The transportation equipment according to claim 2, Its features are, The transport equipment includes a second drive unit (6) for driving the expansion block (5) radially relative to the base (10). The second drive unit (6) can be operated electrically and / or hydraulically and / or pneumatically.

4. The transport equipment according to any one of claims 1 to 3, Its features are, Each of these claws (2) is connected to the base (10) by means of a linkage mechanism. Each linkage mechanism is constructed as a four-bar linkage.

5. The transportation equipment according to claim 4, Its features are, Each linkage transmission mechanism includes a first link (51) and a second link (52). The first link (51) and the second link (52) are respectively hinged to the corresponding claw (2), and The first link (51) and the second link (52) are respectively hinged to the base (10).

6. The transportation equipment according to claim 5, Its features are, The first link (51) and the second link (52) can swing about the first swing axis relative to the corresponding claw (2). The first link (51) and the second link (52) can swing relative to the base (10) around the second swing axis, respectively. The first and second swing axes extend tangentially with the central axis (M) as the reference.

7. The transportation equipment according to claim 5, Its features are, Each linkage mechanism includes a drive rod (55), which is hinged to a corresponding first link (51). The linkage mechanism is configured such that the axial movement of the drive rod (55) relative to the base (10) causes the corresponding pawl (2) to move relative to the base (10) in the radial and axial directions.

8. The transportation equipment according to claim 7, Its features are, Each drive rod (55) can swing about the third swing axis relative to the corresponding first link (51). The third swing axis extends tangentially with reference to the central axis (M).

9. The transport equipment according to any one of claims 1 to 3, Its features are, The transport equipment includes exactly three expansion blocks (5), which are arranged around the central axis (M) and staggered from each other by 120°, and / or The transport equipment includes exactly three claws (2), which are arranged around the central axis (M) and staggered from each other by 120°.

10. The transport equipment according to claim 9, Its features are, Each expansion block (5) is arranged around the central axis (M) in a manner that is offset by 60° relative to the nearest claw (2).

11. The transport equipment according to any one of claims 1 to 3, Its features are, The transport equipment includes a retaining element (16), at which the transport equipment can be suspended. The retaining element (16) is connected to the base (10) in a manner that prevents relative rotation and relative movement.

12. The transport equipment according to any one of claims 1 to 3, Its features are, The transport equipment includes positioning aids for marking the placement position of the workpiece. The positioning aid has at least one laser pointer (3).

13. The transport equipment according to any one of claims 1 to 3, characterized in that, The workpiece is a gear.

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