Weight hoisting clamp with inner hole

Abstract

The utility model relates to a counterweight hoisting fixture with an inner hole, which comprises an upper pressing plate, a hoisting ring, a lower pressing plate, a sliding block, a supporting block and a supporting sleeve, the upper supporting block is fixedly mounted on the lower pressing plate, three fan-shaped grooves are designed on the periphery of the supporting block, the supporting sleeve is designed at the lower end of the upper pressing plate, and three fan-shaped blocks corresponding to the three fan-shaped grooves are designed at the lower end of the supporting sleeve. The device has the advantages that the design is ingenious, the structure is reasonable and compact, the upper pressing plate is pressed above the weight, the supporting sleeve overcomes the supporting force of the spring, the sliding block is driven to slide downwards along the fan-shaped groove of the supporting block through the T-shaped groove, the sliding block is expanded outwards along with downward movement, and the weight is prevented from being damaged. Meanwhile, the upper end of the sliding block slides outwards along the isosceles trapezoid block below the fan-shaped block through the isosceles trapezoid groove, the outer inclined face of the fan-shaped block slides downwards along the inner inclined face in a matched mode, the sliding block extends outwards and is clamped on the outer side of an inner hole of the lowermost weight, and then the sliding block extends downwards through the hanging ring and is screwed into a screw hole of the lower pressing plate to be locked and fixed. And the weight group clamping is completed.

Description

Technical Field

[0001] The utility model relates to the field of weights, in particular to a weight hoisting fixture with an inner hole. Background Art

[0002] Currently, weights with inner holes are disc-shaped, with one piece weighing 200 kg, and are usually divided into groups of 4, 8, 12, or 16 pieces to form a certain specification. However, when used, each group of weights needs to be carried and used, and needs to be hoisted. Currently, such large weights are inconvenient to carry or hoist, and an effective way of hoisting is needed to meet the hoisting requirements. Summary of the Invention

[0003] In order to solve the above technical problems, the utility model proposes a weight lifting clamp with an inner hole, which has a clever design, a reasonable and compact structure, and can quickly clamp multiple sets of weights with holes to meet lifting needs.

[0004] The technical solution of this utility model:

[0005] A weight lifting fixture with an inner hole, which includes an upper pressure plate, a lifting ring, a lower pressure plate, a slider, a support block, and a support sleeve. A through hole is designed in the middle of the upper pressure plate, and the support block is fixedly installed on the lower pressure plate. A through hole is designed in the middle of the support block, and three fan-shaped grooves are designed around the support block. The bottom surface of the fan-shaped groove is designed as an inner bevel. The inner bevel is a surface inclined from top to bottom to the outside. A T-shaped block is provided from bottom to bottom in the middle of the inner bevel. The slider is designed as a fan-shaped block and the inner side surface of the slider is designed as an outer bevel that slides with the inner bevel. A T-shaped slot is designed in the middle of the outer bevel. A horizontal isosceles trapezoidal slot is also provided in the middle of the upper end surface of the slider. A support sleeve is designed at the lower end of the upper pressure plate, and three fan-shaped blocks are designed at the lower end of the support sleeve corresponding to the three fan-shaped grooves. The inner side surface of the fan block is designed with The T-block head of the fan-shaped groove slides with the rectangular oblique groove, and each fan-shaped block is designed with a horizontal isosceles trapezoidal block at the lower end of the fan-shaped block. The upper end of the slider slides through the isosceles trapezoidal groove and is clamped on the isosceles trapezoidal block at the lower end of the fan-shaped block. The inner side of the slider slides on the T-block in the fan-shaped groove of the support block through the corresponding T-slot. A screw rod is provided at the lower end of the lifting ring, and a threaded hole is designed in the middle of the lower pressure plate. The lifting ring passes through the through hole of the upper pressure plate through the screw rod, and then passes through the through holes of the support sleeve and the support block and is screwed into the threaded hole of the lower pressure plate for cooperation; three springs are installed between the support sleeve and the support block, and a circular groove is provided on the support block between the adjacent fan-shaped grooves of the support block, and a spring is placed in the circular groove. The upper end of the spring is against the bottom of the slot between the adjacent fan-shaped blocks at the lower end of the support sleeve.

[0006] The upper pressing plate is designed as a disc-shaped plate, and a positioning protrusion is designed on both sides of the lower end of the upper pressing plate; a positioning groove is designed on both sides of the upper end portion of the inner hole of the weight, and the positioning protrusion is stuck in the positioning groove.

[0007] The inner inclined surface of the sector-shaped groove is designed to have an arc-shaped transverse cross section, and the outer inclined surfaces of the sector-shaped block and the sliding block are also designed to have an arc-shaped transverse cross section.

[0008] The lower end of the upper pressing plate and the supporting sleeve are integrally formed.

[0009] The lower end of the upper pressing plate and the support sleeve are formed separately, and the height of the support sleeve is designed to be different height types.

[0010] An extended spacer sleeve is added between the upper pressing plate and the supporting sleeve.

[0011] The support sleeve, support block and lower pressing plate are cylindrical, and their outer diameters are less than or equal to the inner hole diameter of the weight; the outer diameter of the upper pressing plate is greater than the inner hole diameter of the weight.

[0012] A limit plate is also installed below the lifting ring, and a plurality of arc-shaped waist-shaped holes are designed on the limit plate. The screw rod is installed in the middle position below the limit plate. A plurality of limit wire holes are also designed on the upper pressure plate, and the limit screws can pass through the waist-shaped holes and be screwed into the limit wire holes.

[0013] The advantages of the utility model are ingenious design and reasonable and compact structure. The upper pressure plate is pressed on the top of the weight, and the support sleeve, support block and slider pass through the inner hole of the weight. The upper pressure plate is pressed down to act on the support sleeve, and the support sleeve overcomes the spring support force and carries the slider through the T-slot to slide down along the T-block of the fan-shaped groove of the support block. Due to the inclined design of the inner inclined surface of the fan-shaped groove, the T-block is also inclined, and the slider will be stretched outward as it moves downward. At the same time, the upper end of the slider slides outward along the isosceles trapezoidal block below the fan-shaped block through the isosceles trapezoidal groove, and the outer inclined surface of the fan-shaped block also slides down along the inner inclined surface to cooperate. The slider extends outward and is stuck on the outside of the inner hole of the lowest weight, and then extends downward through the lifting ring and screws into the wire hole of the lower pressure plate to lock and fix it, thereby completing the clamping of the weight group; it is convenient to lift and safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the initial state of the utility model.

[0015] Figure 2 This is a schematic diagram of the utility model in a state where the spring compression slider is expanded.

[0016] Figure 3 yes Figure 1 Schematic diagram of partial section.

[0017] Figure 4 yes Figure 2 Schematic diagram of partial section.

[0018] Figure 5 It is a top view schematic diagram of the support block of the utility model.

[0019] Figure 6 It is a bottom view of the support sleeve of the present invention.

[0020] Figure 7 This is a schematic diagram of the split upper pressing plate and supporting sleeve of the utility model.

[0021] Figure 8 It is a schematic diagram of the utility model for hoisting four weights.

[0022] Figure 9 It is a top view schematic diagram of the weight of the present utility model.

[0023] Figure 10 It is a schematic diagram of the limiting plate designed on the lifting ring of the present utility model. DETAILED DESCRIPTION

[0024] Refer to the attached Figure 1-10 , a weight lifting fixture with an inner hole, which includes an upper pressing plate 1, a lifting ring 2, a lower pressing plate 3, a slider 4, a support block 5, and a support sleeve 6. A through hole is designed in the middle of the upper pressing plate 1, and the support block 5 is fixedly installed on the lower pressing plate 3. A through hole is designed in the middle of the support block 5. The support block 5 is designed with three fan-shaped grooves 50 around it. The bottom surface of the fan-shaped groove 50 is designed as an inner inclined surface. The inner inclined surface is a surface inclined from top to bottom to the outside. A T-shaped block 51 is provided from bottom to bottom in the middle of the inner inclined surface. The slider 4 is designed as a fan-shaped block and the inner side surface of the slider 4 is designed as an outer inclined surface that slides with the inner inclined surface. A T-shaped slot 41 is designed in the middle of the outer inclined surface. A horizontal isosceles trapezoidal slot 42 is also provided in the middle of the upper end surface of the slider 4. A support sleeve 6 is designed at the lower end of the upper pressing plate 1. The lower end of the support sleeve 6 is designed with three fan-shaped blocks 61 corresponding to the three fan-shaped grooves. The inner side surface of the fan block 61 is designed with a fan-shaped slot 5 0's T-block 51 head slides with the rectangular oblique groove, and each fan-shaped block 61 is designed with a horizontal isosceles trapezoidal block 62 at the lower end. The upper end of the slider 4 slides and is stuck on the isosceles trapezoidal block 62 at the lower end of the fan-shaped block 61 through the isosceles trapezoidal groove 42, and the inner side of the slider 4 slides correspondingly on the T-block 51 in the fan-shaped groove 50 of the support block 5 through the T-slot 41. A screw is provided at the lower end of the lifting ring 2, and a threaded hole is designed in the middle of the lower pressure plate 3. The lifting ring 2 passes through the through hole of the upper pressure plate 1 through the screw, and then passes through the through hole of the support sleeve 6 and the support block 5 and is screwed into the threaded hole of the lower pressure plate 3 for cooperation; three springs 7 are installed between the support sleeve 6 and the support block 5, and a circular groove is provided on the support block 5 between the adjacent fan-shaped grooves 50 of the support block 5, and a spring 7 is placed in the circular groove. The upper end of the spring 7 is against the bottom of the notch between the adjacent fan-shaped blocks 61 at the lower end of the support sleeve 6.

[0025] During assembly, the slider first slides through the isosceles trapezoidal groove and is clamped on the isosceles trapezoidal block. The rectangular bevel groove of the sector block can overlap with the rectangular notch at the head of the T-slot of the slider. The lower ends of the three sliders can slide through the T-slot and be clamped on the T-block in the sector groove. When the slider is at the lowest end of the T-block, the rectangular bevel groove of the sector block overlaps with the rectangular notch at the head of the T-slot of the slider to form a whole, and the rectangular bevel groove is also buckled on the head of the T-block. The rectangular bevel groove is designed mainly to avoid the T-block to prevent interference.

[0026] The inner bevel of the sector-shaped groove is designed to have an arc-shaped transverse cross section, and the outer bevel of the sector-shaped block 61 and the outer bevel of the slider 4 are also designed to have an arc-shaped transverse cross section.

[0027] The lower end of the upper pressing plate 1 is integrally formed with the support sleeve 6. The integral forming of the upper pressing plate and the support sleeve is suitable for use when the number of weights is small. The outer diameter of the upper pressing plate can be smaller than the inner hole diameter of the weight, and can also be larger than the inner hole diameter of the weight.

[0028] The upper platen 1 is designed as a disc-shaped plate, with positioning protrusions 8 on either side of its lower end. The weight 9 has positioning grooves on either side of its inner hole, into which the positioning protrusions 8 are located. The positioning grooves and positioning protrusions are designed to prevent the upper platen from rotating relative to the weight. The lifting ring effectively rotates the screw rod to lock and secure the lower platen together, ensuring a safe and stable connection.

[0029] like Figure 7 The lower end of the upper platen 1 is formed separately from the support sleeve 6, and the support sleeve 6 is designed to have different heights. An extended spacer is also added between the upper platen 1 and the support sleeve 6. The purpose of the split design is to extend the support sleeve or add an extended spacer to meet the needs of using a large number of weights and excessive thickness to provide support.

[0030] The support sleeve, support block and lower pressing plate are cylindrical, and their outer diameters are less than or equal to the inner hole diameter of the weight; the outer diameter of the upper pressing plate is greater than the inner hole diameter of the weight.

[0031] like Figure 10 A limit plate 21 is also installed below the lifting ring 2. The limit plate 21 is designed with several arc-shaped waist-shaped holes 22. The screw is installed in the middle position below the limit plate 21. The upper pressure plate is also designed with several limit screw holes. The limit screws can pass through the arc-shaped waist-shaped holes 22 and screw into the limit screw holes. This design prevents the lifting ring from rotating during lifting, which is a safety design.

[0032] When the present invention is used, taking 4 weights of 800 kg as an example, positioning grooves are designed on both sides of the inner hole of the top weight, and the inner hole of the bottom weight is enlarged by turning, and the enlarged distance is the distance after the slider is stretched. The four weights are welded to form an integral body. When the lifting fixture is used, the lifting ring passes through the upper pressure plate, the support sleeve, and the support block from top to bottom and is screwed into the threaded hole of the lower pressure plate. At this time, the spring is in the stretched state, and the distance between the support sleeve and the support block is pushed to the maximum distance. The fan-shaped block at the lower end of the support sleeve slides through the isosceles trapezoidal block to engage the isosceles trapezoidal groove on the slider, and then the slider moves upward along the fan-shaped groove of the support block, and slides inward and shrinks on the T-block through the T-slot. The slider is hidden in the fan shape, so that when the lower end of the lifting fixture is put into the inner hole of the weight group, no interference will be generated until the lower pressure plate extends to the bottom of the inner hole, and the upper pressure plate is pressed down to overcome the The spring force causes the support sleeve to move with the slider down to the bottom along the fan-shaped groove of the support block, and the slider is fully extended outward. At this time, the positioning protrusion under the upper pressure plate is fully engaged in the positioning groove of the upper weight for positioning. Then the lifting ring is rotated to make the screw rod screw down into the threaded hole of the lower pressure plate, fixing the upper pressure plate, the support sleeve, the support block and the lower pressure plate into one body, and the slider is always in the extended state. The slider is just located in the inner hole of the lowest weight, and the upper part of the slider is blocked on the outside of the inner hole of the upper weight. In this way, the lifting fixture and the weight group are assembled, and the whole group of weights can be lifted. When it is a group of 8, 12 or 16 weights, the group of 8, 12 or 16 weights is formed by stacking 4 weight groups. At the same time, it is necessary to lengthen the upper end of the support sleeve or increase the lengthened spacer between the support sleeve and the upper pressure plate for support to meet the use requirements. When lifting is not required, you only need to rotate the lifting ring in the opposite direction to carry the screw rod upward from the threaded hole of the lower pressure plate. Under the action of the spring, the support sleeve is pushed up, and the fan-shaped block under the support sleeve carries the slider upward and retracts to reset. At this time, the entire lifting fixture can be taken out from the inner hole of the weight group.

Claims

1. A weight lifting fixture with an inner hole, characterized in that: The utility model comprises an upper pressure plate, a lifting ring, a lower pressure plate, a slider, a support block and a support sleeve. A through hole is designed in the middle of the upper pressure plate. The support block is fixedly installed on the lower pressure plate. A through hole is designed in the middle of the support block. Three fan-shaped grooves are designed around the support block. The bottom surface of the fan-shaped groove is designed as an inner bevel. The inner bevel is a surface inclined from top to bottom to outside. A T-shaped block is arranged from bottom to bottom in the middle of the inner bevel. The slider is designed as a fan-shaped block and the inner side surface of the slider is designed as an outer bevel that slides with the inner bevel. A T-shaped groove is designed in the middle of the outer bevel. A horizontal isosceles trapezoidal groove is also arranged in the middle of the upper end surface of the slider. A support sleeve is designed at the lower end of the upper pressure plate. Three fan-shaped blocks are designed at the lower end of the support sleeve corresponding to the three fan-shaped grooves. The inner side surface of the fan-shaped block is designed with a T-shaped The block head is slidably fitted in a rectangular inclined groove, and each fan-shaped block is designed with a horizontal isosceles trapezoidal block at the lower end. The upper end of the slider slides through the isosceles trapezoidal groove and is clamped on the isosceles trapezoidal block at the lower end of the fan-shaped block. The inner side of the slider slides on the T-block in the fan-shaped groove of the support block through the T-slot. A screw rod is provided at the lower end of the lifting ring, and a threaded hole is designed in the middle of the lower pressure plate. The lifting ring passes through the through hole of the upper pressure plate through the screw rod, and then passes through the through holes of the support sleeve and the support block, and is screwed into the threaded hole of the lower pressure plate for fitting; three springs are installed between the support sleeve and the support block, and a circular groove is provided on the support block between the adjacent fan-shaped grooves of the support block, and a spring is placed in the circular groove. The upper end of the spring is against the bottom of the slot between the adjacent fan-shaped blocks at the lower end of the support sleeve.

2. A weight hoisting fixture with an inner hole according to claim 1, characterized in that: The upper pressing plate is designed as a disc-shaped plate, and a positioning protrusion is designed on both sides of the lower end of the upper pressing plate; a positioning groove is designed on both sides of the upper end portion of the inner hole of the weight, and the positioning protrusion is stuck in the positioning groove.

3. The weight lifting fixture with an inner hole according to claim 1, characterized in that: The inner inclined surface of the sector-shaped groove is designed to have an arc-shaped transverse cross section, and the outer inclined surfaces of the sector-shaped block and the sliding block are also designed to have an arc-shaped transverse cross section.

4. The weight hoisting fixture with an inner hole according to claim 1, characterized in that: The lower end of the upper pressing plate and the supporting sleeve are integrally formed.

5. The weight hoisting fixture with an inner hole according to claim 1, characterized in that: The lower end of the upper pressing plate and the support sleeve are formed separately, and the height of the support sleeve is designed to be different height types.

6. The weight hoisting fixture with an inner hole according to claim 5, characterized in that: An extended spacer sleeve is added between the upper pressing plate and the supporting sleeve.

7. The weight hoisting fixture with an inner hole according to claim 1, characterized in that: The support sleeve, support block and lower pressing plate are cylindrical, and their outer diameters are less than or equal to the inner hole diameter of the weight; the outer diameter of the upper pressing plate is greater than the inner hole diameter of the weight.

8. The weight hoisting fixture with an inner hole according to claim 1, characterized in that: A limit plate is also installed below the lifting ring, and a plurality of arc-shaped waist-shaped holes are designed on the limit plate. The screw rod is installed in the middle position below the limit plate. A plurality of limit wire holes are also designed on the upper pressure plate, and the limit screws can pass through the waist-shaped holes and be screwed into the limit wire holes.

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