Lifting appliance for pump body of gravel pump

Abstract

The utility model provides a gravel pump body lifting appliance, which belongs to the technical field of lifting appliance tools and comprises a support body, a plurality of lifting arms and a plurality of lifting chains, one ends of the inner sides of the plurality of lifting arms are hinged to the circumference of the support body, the lifting arms have degrees of freedom of swinging along the longitudinal section, and the plurality of lifting chains correspond to the plurality of lifting arms one by one. The lower ends of the hoisting chains are hinged to one ends of the outer sides of the hoisting arms, and the upper ends of the hoisting chains are jointly connected with a hoisting ring; a sliding groove is formed in the suspension arm in the axial direction, and a clamping jaw is arranged in the sliding groove in a sliding mode. According to the lifting appliance for the pump body of the gravel pump, the problem of poor lifting stability is effectively solved, and shaking can be dynamically counteracted and stable lifting can be ensured due to the hinging and swinging freedom degrees of the lifting arms and the supporting body. Meanwhile, the clamping jaw is clamped in the concave portion of the outer edge of the inlet end of the pump body, friction between the clamping jaw and the matching face of the pump body is avoided, the key matching face of the pump body is protected against damage, the service life of the pump body is greatly prolonged, and maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hoist frock technical field, more specifically, relate to a sand pump pump body hoist. BACKGROUND

[0002] For a long time, in the production, transportation and subsequent maintenance links of sand pump, a key problem has always plagued practitioners, that is, the hoisting and packing process of sand pump pump body lacks professional matching tools. At present, the hoisting and packing method adopted by most enterprises is rather extensive. The common operation mode is to directly take iron chain, forcibly pass one end of the iron chain through the outlet part of the pump body, rely on the friction between the iron chain and the outlet edge of the pump body and the tensile strength of the iron chain itself to bear the weight of the pump body, and carry out hoisting operation; In some cases, a channel steel is temporarily placed in the pump body to serve as a support structure to maintain the relative stability of the pump body during hoisting and packing.

[0003] From the perspective of stability, the flexible nature of the iron chain is difficult to control accurately when carrying heavy objects, and it is easy to sway at the initial stage of hoisting. In addition, the uneven distribution of the center of gravity of the pump body, once hoisted, the swing amplitude increases rapidly. Moreover, the hard contact between the iron chain and the pump body outlet will scratch the pump body mating surface during each hoisting and moving process, which may cause scratches and wear, greatly affecting the subsequent assembly accuracy and sealing performance of the pump body, and posing a hidden danger to the efficient operation of the pump body. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a sand pump pump body hoist, which aims to solve the problem of poor hoisting stability of sand pump pump body, which may cause scratches and wear on the mating surface.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of providing a sand pump pump body hoist, which comprises a support body, a plurality of lifting arms and a plurality of lifting chains. One end of the inner side of the plurality of lifting arms is hingedly connected to the circumference of the support body, and the lifting arms have the freedom to swing along the longitudinal section. The plurality of lifting chains correspond to the plurality of lifting arms one by one, the lower end of the lifting chain is hingedly connected to the outer end of the lifting arm, and the upper end of the plurality of lifting chains is connected with a lifting ring. The lifting arm is provided with a sliding groove along the axial direction, and the sliding groove is provided with a pawl which is slidably arranged in the sliding groove. The plurality of pawls are used to be peripherally mounted in the outer recess of the pump body inlet end.

[0006] In one possible implementation, the number of lifting arms is three, and the three lifting arms are hingedly connected to the circumference of the support body.

[0007] In a possible implementation, the outer periphery of the support body is provided with three groups of connecting portions, each group of the connecting portions including two connecting lugs arranged at intervals and a first connecting bolt, the inner end of the hoisting arm is located between the two connecting lugs, and the first connecting bolt penetrates the two connecting lugs and the end of the hoisting arm.

[0008] In a possible implementation, the middle part of the support body is longitudinally provided with a reinforcing column, and the three groups of connecting portions are integrally formed in the circumferential direction of the reinforcing column.

[0009] In a possible implementation, the lower end of the hoisting chain is provided with a U-shaped bracket, the outer end of the hoisting arm is located inside the U-shaped bracket, a second connecting bolt is transversely arranged on the U-shaped bracket, and the second connecting bolt penetrates the outer end of the hoisting arm.

[0010] In a possible implementation, the two ends of the sliding groove are respectively provided with a circular arc structure.

[0011] In a possible implementation, the length of the sliding groove is greater than half the length of the hoisting arm.

[0012] In a possible implementation, the clamping jaw includes a connecting plate and a clamping plate, the upper end of the connecting plate is provided with a third connecting bolt, the third connecting bolt is slidingly arranged in the sliding groove, the clamping plate is connected to the lower end of the connecting plate, and the clamping plate extends inwardly for insertion into the outer edge recess of the inlet end of the pump body.

[0013] In a possible implementation, the connecting plate and the clamping plate are integrally formed.

[0014] In a possible implementation, the upper end surface of the clamping plate is provided with an anti-skid structure.

[0015] The sand and gravel pump body lifting appliance has the advantages that when the sand and gravel pump body needs to be hoisted, the sand and gravel pump body lifting appliance is first moved to above the pump body to be hoisted, the support body is aligned with the center of the pump body, and the lifting arms are naturally lowered to approach the outer edge of the pump body. Then the lifting appliance is slowly lowered, an operator manually pushes the clamping claws on the lifting arms to slide along the sliding grooves, the plurality of clamping claws are clamped on the outer edge recesses of the inlet end of the pump body, the connection is ensured to be stable, and the force point is reasonable. After the clamping is completed, the lifting device connected with the lifting ring applies a pulling force, the lifting chain drives the lifting arms to swing along the longitudinal section with the support body as the shaft, and the angle is adaptively adjusted. The sand and gravel pump body lifting appliance effectively solves the problem of poor hoisting stability, the plurality of lifting arms are hinged with the support body and have the swinging freedom, the shaking can be dynamically offset, and stable hoisting is ensured. Meanwhile, the clamping claws are clamped on the outer edge recesses of the inlet end of the pump body, friction with the pump body is avoided, the key matching surface of the pump body is protected from damage, the service life of the pump body is greatly prolonged, and the maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0017] Figure 1 The structure diagram of the sand and gravel pump body lifting appliance provided by the present application is shown in the figure.

[0018] Figure 2 The Figure 1 The local schematic view of the present application is shown in the figure.

[0019] Figure 3 The use state diagram of the sand and gravel pump body lifting appliance provided by the present application is shown in the figure.

[0020] In the figure: 1, reinforcing column; 2, connecting lug; 3, first connecting bolt; 4, lifting arm; 5, U-shaped frame; 6, second connecting bolt; 7, lifting chain; 8, lifting ring; 9, sliding groove; 10, third connecting bolt; 11, connecting plate; 12, clamping plate. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the following will further describe the present application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0022] Unless otherwise expressly defined, the terms "first", "second" or "third" etc. are used to distinguish different objects, not to describe a particular order.

[0023] Unless otherwise expressly defined, the terms "first", "second" or "third" etc. are used to distinguish different objects, not to describe a particular order.

[0024] Please refer to Figures 1 to 3 A sand pump body lifting appliance is provided, which comprises a support body, a plurality of lifting arms 4 and a plurality of lifting chains 7. One end of each of the plurality of lifting arms 4 is hingedly connected to the support body in a circumferential direction, and the lifting arm 4 has a freedom degree of swinging along a longitudinal section. The plurality of lifting chains 7 correspond to the plurality of lifting arms 4 one by one. The lower end of each of the lifting chains 7 is hingedly connected to the outer end of the lifting arm 4, and the upper ends of the plurality of lifting chains 7 are connected to a lifting ring 8. The lifting arm 4 is provided with a sliding groove 9 along the axial direction, and a clamping jaw is slidably arranged in the sliding groove 9. The plurality of clamping jaws are used to be circumferentially clamped in the outer edge recess of the inlet end of the pump body.

[0025] Compared with the prior art, when the sand pump body needs to be lifted, the sand pump body lifting appliance is first moved to above the pump body to be lifted, the support body is aligned with the center of the pump body, and the lifting arm 4 naturally drops to approach the outer edge of the pump body. Then the lifting appliance is slowly lowered, and the operator manually pushes the clamping jaw on the lifting arm 4 to slide along the sliding groove 9, so that the plurality of clamping jaws are circumferentially clamped in the outer edge recess of the inlet end of the pump body, ensuring stable connection and reasonable force point. After the clamping is completed, the lifting device connected to the lifting ring 8 applies tension, the lifting chain 7 drives the lifting arm 4 to swing along the longitudinal section with the hinge connection between the support body as the shaft, and the angle is adaptively adjusted. The sand pump body lifting appliance provided by the utility model effectively solves the problem of poor lifting stability. The hinge connection between the plurality of lifting arms 4 and the support body and the swinging freedom degree can dynamically offset the shaking and ensure stable lifting. At the same time, the clamping jaw is clamped in the outer edge recess of the inlet end of the pump body, avoiding friction with the mating surface of the pump body, protecting the key mating surface of the pump body from damage, greatly prolonging the service life of the pump body, and reducing the maintenance cost.

[0026] Please refer to Figures 1 to 3, the number of the hoisting arms 4 is three, and the three hoisting arms 4 are circumferentially hinged to the support body. The three hoisting arms 4 form three force points, and the three force points constitute a stable support plane. Compared with a smaller number of hoisting arms 4, the pump body weight can be more evenly and stably dispersed, stress concentration is avoided, the tension distribution of the pump body during hoisting is more reasonable, and the safety of hoisting is greatly improved. In actual operation, when external interference factors such as breeze and slight collision cause the pump body to have a tendency to sway, the three hoisting arms 4 can be cooperatively linked and flexibly swing along the longitudinal section to quickly adjust the angle to offset the sway, thereby effectively ensuring the stability of the gravel pump body during hoisting and transportation, and laying a solid foundation for the smooth progress of the entire operation process.

[0027] Please refer to Figure 1 and Figure 2 , the outer periphery of the support body is provided with three groups of connecting parts, each group of connecting parts includes two connecting lugs 2 arranged at intervals and a first connecting bolt 3, and one end of the inner side of the hoisting arm 4 is located between the two connecting lugs 2, and the first connecting bolt 3 penetrates the two connecting lugs 2 and the end of the hoisting arm 4. The support body is a core load-bearing component, and three groups of connecting parts are arranged on the outer periphery thereof. Each group of connecting parts includes two connecting lugs 2 arranged at intervals and a matching first connecting bolt 3. When assembling the lifting appliance, one end of the inner side of the hoisting arm 4 is inserted into the space reserved between the two connecting lugs 2, and then the first connecting bolt 3 penetrates the two connecting lugs 2 and the end of the hoisting arm 4 in sequence, tightly fixing them together. From the structural stability, the hoisting arm 4 and the support body are rigidly connected through bolt fastening, can withstand the huge tension during hoisting, effectively prevent the hoisting arm 4 from accidentally falling off, and lay a safety line for the pump body hoisting operation. From the installation convenience, compared with the complex welding or riveting process, this bolt connection method is simple to operate, easy to disassemble and reinstall, and workers can quickly complete the operation when the lifting appliance needs to be maintained or replaced parts, greatly saving time cost and improving work efficiency. Moreover, the connecting lugs 2 arranged at intervals also provide a certain activity space for the hoisting arm 4, so that it can smoothly swing along the longitudinal section with the connecting point as the axis when stressed, thereby ensuring that the lifting appliance can flexibly adapt to different working conditions, accurately adjust the pump body posture, and maintain the stability of the hoisting process when hoisting the gravel pump body.

[0028] Please refer to Figure 2The middle part of the support body is longitudinally provided with a reinforcing column 1, and the three groups of connecting parts are integrally formed in the circumferential direction of the reinforcing column 1. The middle part of the support body is accurately provided with a reinforcing column 1 along the longitudinal direction, which provides excellent vertical support force. Integrally formed makes the connecting part and the reinforcing column 1 form a seamless whole structure, and the stress transmission is more smooth and uniform. When hoisting a heavy sand pump body, the great tension can be effectively dispersed, and the local stress concentration phenomenon can be avoided, thereby greatly enhancing the structural strength and stability of the support body as a whole, and ensuring that the lifting appliance is still solid and durable under high-strength operation.

[0029] Please refer to Figure 1 The lower end of the hoisting chain 7 is provided with a U-shaped bracket 5, and the outer side of one end of the lifting arm 4 is located inside the U-shaped bracket 5. A second connecting bolt 6 is transversely arranged on the U-shaped bracket 5, and the second connecting bolt 6 penetrates the outer side of one end of the lifting arm 4. The second connecting bolt 6 is transversely arranged on the U-shaped bracket 5, and the second connecting bolt 6 penetrates the outer side of one end of the lifting arm 4, and the two are firmly bound together. The design of the U-shaped bracket 5 cooperating with the second connecting bolt 6 builds a very reliable rigid connection between the hoisting chain 7 and the lifting arm 4, so that the hoisting chain 7 and the lifting arm 4 will not easily come apart no matter how much tension is borne during hoisting, ensuring the continuity and safety of the hoisting operation and providing protection for the smooth hoisting of the pump body.

[0030] In addition, the two ends of the sliding groove 9 are respectively provided with a circular arc structure, which can effectively avoid the jamming phenomenon of the clamping jaw at both ends of the sliding groove 9 due to sudden obstruction when the clamping jaw moves back and forth in the sliding groove 9. During hoisting, if the pump body is subjected to accidental impact or shaking is relatively severe, the clamping jaw may produce a large displacement in the sliding groove 9. At this time, the circular arc structure can gently receive the impact force of the clamping jaw, prevent it from being deformed and damaged due to hard collision, prolong the service life of the clamping jaw, and thus ensure the reliability of the lifting appliance.

[0031] Preferably, the length of the sliding groove 9 is greater than half the length of the lifting arm 4. The longer sliding groove 9 provides more moving space for the clamping jaw. When hoisting sand pump bodies of different models and sizes, the position and specifications of the inlet end outer edge recess of the pump body often differ. Thanks to the sufficient length of the sliding groove 9, the clamping jaw can be flexibly adjusted in a large range of positions on the lifting arm 4, easily adapting to the clamping needs of various pump bodies, ensuring that the pump body can be accurately and firmly grasped regardless of the working conditions, and greatly enhancing the versatility and adaptability of the lifting appliance.

[0032] Please refer to Figure 1The claw is composed of the connecting plate 11 and the clamping plate 12, the upper end of the connecting plate 11 is provided with the third connecting bolt 10 penetrating through, the third connecting bolt 10 is slidingly arranged in the sliding groove 9, and the clamping plate 12 is connected to the lower end of the connecting plate 11 and extends to the inner side for being inserted into the outer edge recess of the inlet end of the pump body. The claw is composed of the connecting plate 11 and the clamping plate 12, the connecting plate 11 is located at the upper side, the upper end of the connecting plate 11 is provided with the third connecting bolt 10 penetrating through, the third connecting bolt 10 is closely matched with the sliding groove 9 on the hoisting arm 4 and can smoothly slide in the sliding groove 9, and the design endows the claw with the ability of flexibly adjusting the position on the hoisting arm 4, so that the claw can quickly adapt to the clamping requirements of the pump bodies of different models and sizes of gravel pumps. The clamping plate 12 is connected to the lower end of the connecting plate 11, and the part extending to the inner side is used for being inserted into the outer edge recess of the inlet end of the pump body, so as to establish the stable connection with the pump body. During the hoisting, the clamping plate 12 tightly locks the pump body by virtue of the structural features of the clamping plate 12, so that the pump body is prevented from shaking or being separated.

[0033] Specifically, the connecting plate 11 and the clamping plate 12 are integrally formed, and there is no connecting gap or weak link between the two, so as to construct a high-strength and high-stability overall structure. From the manufacturing aspect, the assembly steps of the parts are reduced, the production process is simplified, the production efficiency is improved, and the fault risk caused by the quality problems of the connecting parts is reduced.

[0034] Preferably, the upper end surface of the clamping plate 12 is provided with an anti-skid structure. The anti-skid structure greatly enhances the connection stability between the clamping plate 12 and the outer edge recess of the inlet end of the pump body. When the clamping plate 12 is inserted into the outer edge recess of the inlet end of the pump body, the anti-skid structure directly contacts the pump body, and the texture, protrusions or rough surface treated by special treatment of the anti-skid structure effectively increase the friction force. Even if the hoisting process is disturbed by strong wind, the transportation process is bumpy, or the pump body shakes due to the uneven distribution of the center of gravity, the clamping plate 12 can be stably fixed in the original position, so as to ensure that the pump body will not be separated from the control of the claw.

[0035] The above merely describes the preferred embodiments of the utility model and is not used to limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A sand pump body hoist characterized by, The device comprises a support body, a plurality of hangers (4) and a plurality of lifting chains (7), the inner side of the plurality of hangers (4) is hinged to the circumference of the support body, the hangers (4) have the freedom of swinging along the longitudinal section, the plurality of lifting chains (7) corresponds to the plurality of hangers (4) one by one, the lower end of the lifting chain (7) is hinged to the outer side of the hanger (4), the upper end of the plurality of lifting chains (7) is connected with a lifting ring (8); the hanger (4) is provided with a sliding groove (9) along the axial direction, the sliding groove (9) is provided with a clamping jaw, and the plurality of clamping jaws are used for circumferential clamping on the outer recess of the inlet end of the pump body.

2. A sand pump body hanger as claimed in claim 1, wherein, The number of the hangers (4) is three, and the three hangers (4) are circumferentially hinged to the circumference of the support body.

3. A sand pump body hanger as claimed in claim 2, wherein, The outer circumference of the support body is provided with three groups of connecting parts, each group of connecting parts comprises two connecting lugs (2) and a first connecting bolt (3), the inner side of the hanger (4) is located between the two connecting lugs (2), and the first connecting bolt (3) penetrates the two connecting lugs (2) and the end of the hanger (4).

4. A sand pump body hanger as claimed in claim 3, wherein, The middle part of the support body is longitudinally provided with a reinforcing column (1), and the three groups of connecting parts are integrally formed on the circumference of the reinforcing column (1).

5. A sand pump body hanger as claimed in claim 1, wherein, The lower end of the lifting chain (7) is provided with a U-shaped bracket (5), the outer side of the hanger (4) is located inside the U-shaped bracket (5), a second connecting bolt (6) is transversely arranged on the U-shaped bracket (5), and the second connecting bolt (6) penetrates the outer side of the hanger (4).

6. A pump body hanger for a gusher pump as defined in claim 1, wherein Both ends of the sliding groove (9) are provided with a circular arc structure.

7. A pump body hanger for a gusher pump as defined in claim 1 wherein, The length of the sliding groove (9) is greater than half the length of the hanger (4).

8. A pump body hanger for a gusher pump as defined in claim 1, wherein The clamping jaw comprises a connecting plate (11) and a clamping plate (12), the upper end of the connecting plate (11) is provided with a third connecting bolt (10), the third connecting bolt (10) is slidably arranged in the sliding groove (9), the clamping plate (12) is connected to the lower end of the connecting plate (11), and the clamping plate (12) extends inwardly for inserting into the outer recess of the inlet end of the pump body.

9. A pump body hanger for a gusher pump as defined in claim 8 wherein, The connecting plate (11) and the clamping plate (12) are integrally formed.

10. A sand pump body hanger as claimed in claim 8, wherein, The upper end surface of the clamping plate (12) is provided with an anti-skid structure.

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