An inside expanding type sling

Abstract

The application relates to an inner expansion type lifting appliance, belonging to the field of hanging devices, which comprises a mounting base, quick clamps and a mandrel, the quick clamps are bolted and fixed on the outer side wall of the mounting base, the top of the mandrel is fixedly connected with a lifting boom, the top of the lifting boom is detachably installed with a lifting ring, the lifting boom is detachably installed with a connecting plate, and the connecting plate is bolted and fixed with a push-pull rod of the quick clamp; the bottom of the mounting base is fixedly installed with a sleeve, a through rod hole for the mandrel is axially and centrally formed in the sleeve, the bottom end of the sleeve is detachably installed with an expansion sleeve, the bottom end of the mandrel is detachably installed with a tapered shaft, and the taper surface of the outer side wall of the tapered shaft is inclined outward in the downward direction. The application can reduce the volume and weight of the lifting appliance and simplify the structure of the lifting appliance.

Description

Technical Field

[0001] This application relates to the field of lifting devices, and more particularly to an internally expanding lifting device. Background Technology

[0002] In the automobile production process, lifting equipment uses a lifting device to lift the parts to be lifted to the target position. For example, when lifting a bearing, the lifting device is connected to the lifting equipment, and then the jaws of the lifting device are engaged with the inner wall of the lifting hole of the bearing. The lifting equipment then uses the lifting device to lift the bearing to the target position.

[0003] In the existing technology, common lifting tools utilize the shape and steps of the workpiece to make clamping lifting tools. Common clamping lifting tools are usually large in size and weight and have a complex structure in order to meet the clamping needs. When the external space of the workpiece is limited, clamping lifting tools are difficult to meet the needs of production and processing, and there is room for improvement. Utility Model Content

[0004] In order to reduce the size and weight of the lifting device and simplify its structure, this application provides an internally expanding lifting device.

[0005] The internal expansion lifting device provided in this application adopts the following technical solution: An internally expanding lifting device includes a mounting base, a quick clamp, and a mandrel. The quick clamp is bolted to the outer wall of the mounting base. A lifting rod is fixedly connected to the top of the mandrel. A lifting ring is detachably installed on the top of the lifting rod. A connecting plate is detachably installed on the lifting rod. The connecting plate is bolted to the push-pull rod of the quick clamp. A sleeve is fixedly installed at the bottom of the mounting base. A through hole for the mandrel to pass through is opened axially in the middle of the sleeve. An expansion sleeve is detachably installed at the bottom end of the sleeve. A tapered shaft is detachably installed at the bottom end of the mandrel. The tapered surface of the outer wall of the tapered shaft is inclined outward in a downward direction.

[0006] By adopting the above technical solution, in the actual production and processing process, the operator can control the push-pull rod to slide up or down through the handle of the quick-clamp. Since the lifting rod is connected to the mandrel and the lifting rod is connected to the push-pull rod through the connecting plate, when the push-pull rod moves upward, it can simultaneously drive the tapered shaft at the bottom of the mandrel to move upward, thereby causing the expansion sleeve to open and positioning the inner hole of the workpiece through the expansion sleeve. After the workpiece is hoisted to the set position, the operator drives the push-pull rod downward through the handle, causing the connecting plate, lifting rod, mandrel, and tapered shaft to move downward together. After the expansion sleeve returns to its original position, the lifting device can be separated from the workpiece. Through the mutual combination and use of the quick-clamp, connecting plate, lifting rod, mandrel, expansion sleeve, and tapered shaft, the device can be connected to the workpiece through internal expansion positioning, which is convenient for hoisting the workpiece. It has the advantages of simple and compact structure, small size, and light weight, which can reduce the space requirements of the lifting device for hoisting the workpiece.

[0007] Preferably, the rod has slots on both sides, and the end of the connecting plate away from the push-pull rod has two engaging parts integrally formed, with the two engaging parts respectively engaging in the two slots.

[0008] By adopting the above technical solution, the two engaging parts at the end of the connecting plate can be easily inserted through the slots on both sides of the rod. Since the connecting plate is bolted and fixed to the push-pull rod, the two engaging parts can always be embedded in the two slots, thus realizing the connection between the push-pull rod and the rod.

[0009] Preferably, the expansion sleeve includes a convex ring, and the bottom inner wall of the sleeve is provided with a first annular groove adapted to the convex ring. A stop is bolted to the bottom end of the sleeve, and a second annular groove adapted to the convex ring is provided in the middle of the stop. The first annular groove and the second annular groove are both coaxial with the through-rod hole. A limiting ring is integrally provided on the lower inner wall of the second annular groove, and the convex ring abuts against the limiting ring and the inner wall of the first annular groove.

[0010] By adopting the above technical solution, the convex ring and the stop seat can achieve the technical effect of detachable connection between the expansion sleeve and the bottom of the sleeve.

[0011] Preferably, a third annular groove is formed on the bottom inner wall of the sleeve, the third annular groove is located above the second annular groove, and an oil-free bushing is installed in the third annular groove. The oil-free bushing is coaxially arranged on the outside of the mandrel. A retaining ring is installed in the first annular groove. The retaining ring is coaxially disposed on the outside of the mandrel and abuts against the top of the convex ring and the inner wall of the first annular groove.

[0012] Preferably, the bottom of the mandrel is provided with a first threaded connection part, and the top center of the tapered shaft is provided with a first threaded hole that matches the threaded connection part.

[0013] By adopting the above technical solution, the technical effect of detachable connection between the end of the mandrel and the tapered shaft can be achieved through the first threaded connection part and the first threaded hole at the top of the tapered shaft.

[0014] Preferably, the top of the lifting rod is provided with a second threaded hole, and the bottom of the lifting ring is integrally formed with a second threaded connection part, which is threadedly installed in the second threaded hole.

[0015] By adopting the above technical solution, the second threaded connection at the bottom of the lifting ring and the second threaded hole at the top of the boom can achieve the technical effect of detachable connection between the lifting ring and the boom; the lifting ring makes it easy for operators to connect the lifting device to the robotic arm.

[0016] In summary, the internal expansion type lifting device of this application has at least one of the following beneficial technical effects: 1. By combining and using quick clamps, connecting plates, lifting rods, mandrels, expansion sleeves, and tapered shafts, the device can be connected to the workpiece through internal expansion positioning, which facilitates the lifting of the workpiece. It has the advantages of simple and compact structure, small size, and light weight, which can reduce the space requirements of the lifting device for lifting the workpiece. 2. The lifting rings make it easy for operators to connect the lifting equipment to the robotic arm. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the overall structure of the lifting device in an embodiment of this application.

[0018] Figure 2 yes Figure 1 The enlarged diagram at point A is mainly used to show the connection relationship between the connecting plate and the hanger.

[0019] Figure 3 This is a schematic diagram illustrating the connection structure of the mandrel in an embodiment of this application.

[0020] Explanation of reference numerals in the attached drawings: 1. Mounting base; 2. Quick clamp; 21. Push-pull rod; 22. Handle; 3. Mandrel; 31. First threaded connection; 4. Lifting rod; 41. Lifting ring; 411. Second threaded connection; 42. Slot; 43. Second threaded hole; 5. Connecting plate; 51. Engaging part; 6. Sleeve; 61. First annular groove; 62. Third annular groove; 63. Oil-free bushing; 64. Retaining ring; 7. Expansion sleeve; 71. Convex ring; 8. Tapered shaft; 81. First threaded hole; 9. Stop seat; 91. Second annular groove; 92. Limiting ring. Detailed Implementation

[0021] The following combination Figures 1-3 This application will be described in further detail.

[0022] Example This application discloses an internally expanding lifting device. (Refer to...) Figure 1 It mainly includes a mounting base 1, a quick clamp 2 and a spindle 3. The quick clamp 2 is bolted and fixed to the outer wall of the mounting base 1. A lifting rod 4 is fixedly connected to the top of the spindle 3. A lifting ring 41 is detachably installed on the top of the lifting rod 4. A connecting plate 5 is detachably installed on the lifting rod 4. The connecting plate 5 is bolted and fixed to the push-pull rod 21 of the quick clamp 2.

[0023] A sleeve 6 is fixedly installed at the bottom of the mounting base 1. A through hole for the mandrel 3 to pass through is opened in the middle of the sleeve 6 along the axial direction. An expansion sleeve 7 is detachably installed at the bottom end of the sleeve 6. A tapered shaft 8 is detachably installed at the bottom end of the mandrel 3. The tapered surface of the outer wall of the tapered shaft 8 is inclined outward in the downward direction.

[0024] Sliding or sliding downwards, since the lifting rod 4 is connected to the mandrel 3 and the lifting rod 4 is connected to the push-pull rod 21 through the connecting plate 5, when the push-pull rod 21 moves upwards, it can simultaneously drive the tapered shaft 8 at the bottom of the mandrel 3 to move upwards, thereby causing the expansion sleeve 7 to open and positioning the inner hole of the workpiece through the expansion sleeve 7; after the workpiece is hoisted to the set position, the operator drives the push-pull rod 21 downwards through the handle 22, causing the connecting plate 5, the lifting rod 4, the mandrel 3 and the tapered shaft 8 to move downwards together. After the expansion sleeve 7 returns to its original position, the lifting device can be separated from the workpiece.

[0025] By combining and using quick clamps 2, connecting plate 5, lifting rod 4, mandrel 3, expansion sleeve 7 and tapered shaft 8, the device can be connected to the workpiece through internal expansion positioning, which is convenient for lifting the workpiece. It has the advantages of simple and compact structure, small size and light weight, which can reduce the space requirements of the lifting device for lifting the workpiece.

[0026] Reference Figure 1 and Figure 2 The rod 4 has slots 42 on both sides. The end of the connecting plate 5 away from the push rod 21 has two locking parts 51 integrally formed, and the two locking parts 51 are respectively locked in the two slots 42.

[0027] The slots 42 on both sides of the rod 4 allow the two engaging parts 51 at the end of the connecting plate 5 to easily extend into them. Since the connecting plate 5 is bolted to the push-pull rod 21, the two engaging parts 51 are always embedded in the two slots 42, thus realizing the connection between the push-pull rod 21 and the rod 4.

[0028] Reference Figure 3 The expansion sleeve 7 includes a convex ring 71. The bottom inner wall of the sleeve 6 is provided with a first annular groove 61 that is adapted to the convex ring 71. A stop 9 is bolted to the bottom end of the sleeve 6. A second annular groove 91 that is adapted to the convex ring 71 is provided in the middle of the stop 9. The first annular groove 61 and the second annular groove 91 are coaxial with the through hole. A limit ring 92 is integrally provided on the lower inner wall of the second annular groove 91. The convex ring 71 is pressed between the limit ring 92 and the inner wall of the first annular groove 61.

[0029] The convex ring 71 and the stop 9 enable a detachable connection between the bottom of the expansion sleeve 7 and the sleeve 6.

[0030] Reference Figure 3 The bottom inner wall of the sleeve 6 is provided with a third annular groove 62, which is located above the second annular groove 91. An oil-free bushing 63 is installed in the third annular groove 62 and is coaxially arranged on the outside of the spindle 3. A retaining ring 64 is installed in the first annular groove 61 and is coaxially arranged on the outside of the spindle 3. The retaining ring 64 is pressed against the top of the convex ring 71 and the inner wall of the first annular groove 61.

[0031] Reference Figure 3The bottom of the mandrel 3 is provided with a first threaded connection part 31, and the top center of the tapered shaft 8 is provided with a first threaded hole 81 that is adapted to the threaded connection part. Through the first threaded connection part 31 and the first threaded hole 81 at the top of the tapered shaft 8, the technical effect of detachable connection between the end of the mandrel 3 and the tapered shaft 8 can be achieved.

[0032] Reference Figure 3 The top of the lifting rod 4 is provided with a second threaded hole 43, and the bottom of the lifting ring 41 is integrally formed with a second threaded connection part 411, which is threadedly installed in the second threaded hole 43.

[0033] The second threaded connection 411 at the bottom of the lifting ring 41 and the second threaded hole 43 at the top of the lifting rod 4 enable a detachable connection between the lifting ring 41 and the lifting rod 4; the lifting ring 41 facilitates the operator to connect the lifting device to the robotic arm.

[0034] The implementation principle of an internally expanding lifting device according to an embodiment of this application is as follows: In the actual production and processing process, the operator can control the push-pull rod 21 to slide upward or downward through the handle 22 of the quick clamp 2. Since the lifting rod 4 is connected to the mandrel 3 and the lifting rod 4 is connected to the push-pull rod 21 through the connecting plate 5, when the push-pull rod 21 moves upward, it can simultaneously drive the tapered shaft 8 at the bottom of the mandrel 3 to move upward, thereby causing the expansion sleeve 7 to open and positioning the inner hole of the workpiece through the expansion sleeve 7. After the workpiece is lifted to the set position, the operator drives the push-pull rod 21 downward through the handle 22, causing the connecting plate 5, lifting rod 4, mandrel 3, and tapered shaft 8 to move downward together. After the expansion sleeve 7 returns to its original position, the lifting device can be separated from the workpiece. Through the mutual combination and use of the quick clamp 2, connecting plate 5, lifting rod 4, mandrel 3, expansion sleeve 7, and tapered shaft 8, the device can be connected to the workpiece through internal expansion positioning, which is convenient for lifting the workpiece. It has the advantages of simple and compact structure, small size, and light weight, and can reduce the space requirements of the lifting device for lifting the workpiece.

[0035] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An internally expanding lifting device, characterized in that, Includes a mounting base (1), quick clamps (2) and a spindle (3). The quick clamps (2) are bolted to the outer wall of the mounting base (1). A lifting rod (4) is fixedly connected to the top of the spindle (3). A lifting ring (41) is detachably installed on the top of the lifting rod (4). A connecting plate (5) is detachably installed on the lifting rod (4). The connecting plate (5) is bolted to the push-pull rod (21) of the quick clamps (2). A sleeve (6) is fixedly installed at the bottom of the mounting base (1). A through hole for the mandrel (3) to pass through is provided in the middle of the sleeve (6) along the axial direction. An expansion sleeve (7) is detachably installed at the bottom end of the sleeve (6). A tapered shaft (8) is detachably installed at the bottom end of the mandrel (3). The tapered surface of the outer wall of the tapered shaft (8) is inclined outward in the downward direction.

2. The internal expansion lifting device according to claim 1, characterized in that, The rod (4) has slots (42) on both sides. The end of the connecting plate (5) away from the push-pull rod (21) has two locking parts (51) integrally formed. The two locking parts (51) are respectively locked in the two slots (42).

3. The internal expansion lifting device according to claim 2, characterized in that, The expansion sleeve (7) includes a convex ring (71). The bottom inner wall of the sleeve (6) is provided with a first annular groove (61) that is adapted to the convex ring (71). A stop (9) is bolted to the bottom end of the sleeve (6). A second annular groove (91) that is adapted to the convex ring (71) is provided in the middle of the stop (9). The first annular groove (61) and the second annular groove (91) are both coaxial with the through hole. The lower inner wall of the second annular groove (91) is integrally provided with a limiting ring (92), and the convex ring (71) abuts against the limiting ring (92) and the inner wall of the first annular groove (61).

4. The internal expansion lifting device according to claim 3, characterized in that, The bottom inner wall of the sleeve (6) is provided with a third annular groove (62), which is located above the second annular groove (91). An oil-free bushing (63) is installed in the third annular groove (62), and the oil-free bushing (63) is coaxially arranged on the outside of the spindle (3). A retaining ring (64) is installed in the first annular groove (61). The retaining ring (64) is coaxially arranged on the outside of the mandrel (3). The retaining ring (64) abuts against the top of the convex ring (71) and the inner wall of the first annular groove (61).

5. The internal expansion lifting device according to claim 4, characterized in that, The bottom of the mandrel (3) is provided with a first threaded connection part (31), and the top center of the tapered shaft (8) is provided with a first threaded hole (81) that is adapted to the threaded connection part.

6. The internal expansion lifting device according to claim 1, characterized in that, The top of the lifting rod (4) is provided with a second threaded hole (43), and the bottom of the lifting ring (41) is integrally formed with a second threaded connection part (411), which is threadedly installed in the second threaded hole (43).

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