Lever type lifting appliance

Abstract

The utility model provides a lever type lifting appliance. The lifting appliance comprises a connecting piece and a lever force applying piece. Part of the connecting pieces are used for being inserted into the hoisting holes. The lever force application piece is rotationally connected to the connecting piece and is provided with a contact end and a force application end, and the rotational connection position of the connecting piece and the lever force application piece is located between the contact end and the force application end. According to the lever type lifting appliance, the force application end is lifted upwards through lifting equipment, the lever force application piece rotates relative to the connecting piece till the contact end is inserted into the annular groove, and therefore the connecting piece and the contact end jointly clamp the main bearing ring, and lifting of the main bearing ring is achieved; the connection stability between the lifting appliance and the main bearing ring in the lifting process is improved, the possibility that the main bearing ring falls off is reduced, and safe operation is ensured.

Description

Technical Field

[0001] The present application relates to the technology of hoisting equipment, and in particular to a lever-type sling. Background Art

[0002] In various large-scale precision mechanical equipment such as shield machines and fans, the axial load, radial load, and overturning moment generated between two relatively rotating components need to be borne by a large main bearing to ensure the stability of the components during rotation. During the assembly process, due to the large volume and weight of the large main bearing ring, a hoisting device is generally used to lift the large main bearing into the equipment.

[0003] In the prior art, the hoisting device for the large main bearing ring generally includes a hoisting equipment and a sling. The sling is connected to the hoisting equipment. At the same time, threads are provided on the main bearing ring, and the force application end of the sling realizes the hoisting of the main bearing ring through thread cooperation with the main bearing ring.

[0004] However, before the actual operation of the existing sling, threads need to be additionally provided on the main bearing ring. When the main bearing ring is heavy, the thread cooperation for hoisting is prone to falling off, posing a safety hazard. Summary of the Utility Model

[0005] In view of this, the present application provides a lever-type sling to solve the problem of the safety hazard of the main bearing ring falling off due to thread cooperation during the hoisting of the existing main bearing ring.

[0006] To achieve the above object, the present application provides a lever-type sling, which adopts the following technical solutions:

[0007] A lever-type sling provided by the present application is used for hoisting a main bearing ring. A hoisting hole is provided on the side surface of the main bearing ring, and at least one end surface of the main bearing ring is provided with an annular groove, including a connecting member and a lever force application member.

[0008] Among them, a part of the connecting member is used to be inserted into the hoisting hole.

[0009] The lever force application member is rotatably connected to the connecting member. The lever force application member has a contact end and a force application end. The rotation connection position between the connecting member and the lever force application member is located between the contact end and the force application end. The force application end is used to connect the hoisting equipment.

[0010] The lever force application member is configured such that when the force application end receives the lifting force of the hoisting equipment, it rotates relative to the connecting member, so that the contact end is inserted into the annular groove, and the connecting member and the contact end jointly clamp the main bearing ring to lift the main bearing ring.

[0011] Through the above technical scheme, before lifting the main bearing ring, the force-applying end of the lever force-applying member is connected to the lifting equipment, and part of the connecting member is inserted into the lifting hole. Then the lifting equipment pulls the force-applying end upward, and the force-applying end is subjected to the lifting force of the lifting equipment. The lever force-applying member rotates relative to the connecting member until the contact end abuts against the annular groove, thereby making the connecting member and the contact end clamp the main bearing ring together to realize the lifting of the main bearing ring. The main bearing ring is clamped by the lever principle to realize the lifting, which improves the connection stability between the hoisting device and the main bearing ring during the lifting process, reduces the possibility of the main bearing ring falling off, and ensures safe operation.

[0012] In a possible implementation, the lever force applying member includes a first rod body and a second rod body connected to one end of the first rod body, the first rod body and the second rod body have a preset angle, the first rod body is rotatably connected to the connecting member near the second rod body, and the end of the first rod body facing away from the second rod body is the force applying end, and the end of the second rod body facing away from the first rod body is the contact end.

[0013] Through the above technical solution, the first rod body and the second rod body have a preset angle so that the angle between the second rod body arranged at the contact end and the connecting piece during the lifting operation is an acute angle, thereby reducing the distance between the contact end and the connecting piece. When the lifting equipment lifts the first rod body, the contact end quickly abuts against the annular groove, thereby improving the lifting efficiency of the lifting equipment.

[0014] In a possible implementation manner, the side surface and the end surface of the contact end are used to abut against the groove bottom and the side wall of the annular groove respectively.

[0015] Through the above technical scheme, the annular groove is opened according to a preset depth, that is, it has an upper and lower groove bottom and an annular side wall. When the contact end abuts against the annular groove, the side surface of the contact end abuts against the upper groove bottom of the annular groove, and the end face of the contact end abuts against the annular side wall of the annular groove, that is, the contact end abuts against the annular top angle of the annular groove, which reduces the possibility of contact sliding when the contact end abuts against the annular groove, ensures stable contact between the abutting end and the main bearing ring, and thereby improves the lifting stability of the sling.

[0016] In a possible implementation manner, the contact end is configured to be pointed and has a chamfer.

[0017] Through the above technical solution, the contact end with a pointed tip improves the accuracy of the contact position between the contact end and the main bearing ring, avoids invalid abutment, and the chamfer opened at the contact end increases the contact area between the contact end and the main bearing ring, thereby enhancing the connection stability between the lever force member and the main bearing ring during lifting.

[0018] In a possible implementation manner, the contact end is provided with a copper plating layer.

[0019] Through the above technical solution, a copper plating layer is provided at the contact end, which reduces the oxidation corrosion that may be caused by the long-term contact of the contact end with air, avoids the change of the internal structure of the contact end caused by corrosion, ensures the use safety of the contact end, and prolongs the service life of the contact end.

[0020] In a possible implementation manner, a force application hole is provided in the force application end, and the force application hole is used to be connected to the lifting device through a connecting rope.

[0021] Through the above technical solution, the provision of the force application hole realizes the detachable connection between the lever force application member and the lifting device, and improves the convenience of connecting the lever force application member to the lifting device.

[0022] In a possible implementation manner, the connecting member includes an inner hole positioning rod and a connecting pile.

[0023] Wherein, the inner hole positioning rod is used to be inserted into the hoisting hole.

[0024] The top end of the connecting pile is rotatably connected to the lever force application member, the bottom end of the connecting pile is fixedly connected to the top end of the inner hole positioning rod, the outer diameter of the bottom end of the connecting pile is larger than the diameter of the hoisting hole, and the connecting pile is used to abut against the side surface of the main bearing race.

[0025] Through the above technical solution, before hoisting the main bearing race, the inner hole positioning rod is inserted into the hoisting hole to determine the relative position between the connecting member and the main bearing race. The connecting pile serves as the base pile of the lever force application member and abuts against the side surface of the main bearing race, improving the connection stability between the lifting tool and the main bearing race.

[0026] In a possible implementation manner, the connecting pile has an installation groove, the installation groove communicates with the two opposite side surfaces of the connecting pile, and a part of the lever force application member is inserted into the installation groove.

[0027] Through the above technical solution, a part of the lever force application member is inserted into the installation groove and is rotatably connected to the connecting pile. The provision of the installation groove enables the two sides of the lever force application member to be respectively rotatably connected to the two opposite inner walls of the installation groove, improving the connection stability between the lever force application member and the connecting pile.

[0028] In a possible implementation manner, the lifting tool further includes a connecting shaft. Connecting holes are symmetrically provided on the two side walls of the installation groove, a rotating hole is provided on the lever force application member, and the connecting shaft passes through the rotating hole and the two connecting holes at the same time.

[0029] Through the above technical solution, the connecting shaft passes through the rotating hole of the lever force applying member, and at the same time, both ends of the connecting shaft are respectively located in two connecting holes, realizing the rotational connection between the lever force applying member and the connecting pile, and improving the stability of the rotational connection.

[0030] In a possible implementation manner, the connecting shaft is a bolt.

[0031] For the lever type lifting tool provided by the present application, before hoisting the main bearing race, the force applying end of the lever force applying member is connected to the hoisting equipment through a connecting rope, and then the inner hole positioning rod is inserted into the hoisting hole to determine the relative position between the connecting member and the main bearing race. The connecting pile serves as the base pile of the lever force applying member and abuts against the side surface of the main bearing race; the hoisting equipment pulls the force applying end upward, and the force applying end receives the hoisting force of the hoisting equipment. The lever force applying member rotates relative to the connecting member along the connecting shaft until the contact end abuts against the bottom and side walls of the annular groove. Thus, the connecting member and the contact end act on the main bearing race together, thereby realizing the hoisting of the main bearing race. Utilizing the lever principle to clamp the main bearing race for hoisting improves the connection stability between the lifting tool and the main bearing race during the hoisting process, reduces the possibility of the main bearing race falling off, and ensures safe operation. Description of the Drawings

[0032] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is a schematic structural diagram of the lever type lifting tool provided by the embodiment of the present application;

[0034] Figure 2 It is a schematic structural diagram of the lever type lifting tool provided by the embodiment of the present application acting on the main bearing race.

[0035] Description of the Reference Numerals:

[0036] 1000 - Main bearing race; 1100 - Hoisting hole; 1200 - Annular groove;

[0037] 100 - Connecting member; 110 - Inner hole positioning rod; 120 - Connecting pile; 121 - Installation groove;

[0038] 200 - Lever force applying member; 210 - Contact end; 220 - Force applying end; 221 - Force applying hole;

[0039] 300 - Connecting shaft.

[0040] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and more detailed descriptions will be provided hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed Description of the Embodiments

[0041] Exemplary embodiments will be described in detail herein, and examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0042] Secondly, it should be noted that in the description of the present application, terms indicating directions or positional relationships such as "inner" and "outer" are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0043] In addition, it should also be noted that in the description of the present application, unless otherwise clearly defined and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0044] In various large-scale precision mechanical equipment such as shield machines and fans, the axial load, radial load, and tipping moment generated between two relatively rotating components need to be borne by large main bearings to ensure the stability of the components during rotation. During the assembly process, due to the large volume and weight of the large main bearing rings, lifting equipment is generally used to lift the large main bearings into the equipment.

[0045] In the prior art, the lifting device for large main bearing rings generally includes lifting equipment and a lifting tool. The lifting tool is connected to the lifting equipment. At the same time, threads are provided on the main bearing rings, and the force application end of the lifting tool realizes the lifting of the main bearing rings through thread cooperation with the main bearing rings.

[0046] However, the existing lifting tools need to additionally provide threads on the main bearing rings before actual operation. When the main bearing rings are relatively heavy, the thread cooperation for lifting is prone to falling off, posing a safety hazard.

[0047] In view of the above problems, an embodiment of the present application provides a lever-type lifting tool to solve the problem of the safety hazard of the main bearing ring falling off due to the thread fit during the existing lifting of the main bearing ring.

[0048] The following will describe the present application in detail with reference to the accompanying drawings and specific embodiments:

[0049] Figure 1 It is a schematic structural diagram of the lever-type lifting tool provided by the embodiment of the present application; Figure 2 It is a schematic structural diagram of the lever-type lifting tool provided by the embodiment of the present application acting on the main bearing ring.

[0050] Refer to Figures 1 to 2 As shown, a lever-type lifting tool provided by an embodiment of the present application is used for lifting a main bearing ring 1000. A lifting hole 1100 is provided on the side surface of the main bearing ring 1000, and at least one end surface of the main bearing ring 1000 is provided with an annular groove 1200, including a connecting member 100 and a lever force-applying member 200.

[0051] Among them, part of the connecting member 100 is used to be inserted into the lifting hole 1100.

[0052] The lever force-applying member 200 is rotatably connected to the connecting member 100. The lever force-applying member 200 has a contact end 210 and a force-applying end 220. The rotational connection between the connecting member 100 and the lever force-applying member 200 is located between the contact end 210 and the force-applying end 220, and the force-applying end 220 is used to connect a lifting device.

[0053] The lever force-applying member 200 is configured to rotate relative to the connecting member 100 when the force-applying end 220 receives the lifting force of the lifting device, so that the contact end 210 is inserted into the annular groove 1200, and the connecting member 100 and the contact end 210 jointly clamp the main bearing ring 1000 to lift the main bearing ring 1000.

[0054] It can be understood that before lifting the main bearing ring 1000, connect the force-applying end 220 of the lever force-applying member 200 to the lifting device, insert part of the connecting member 100 into the lifting hole 1100, and then the lifting device pulls the force-applying end 220 upward. The force-applying end 220 receives the lifting force of the lifting device, and the lever force-applying member 200 rotates relative to the connecting member 100 until the contact end 210 abuts against the annular groove 1200. Thus, the connecting member 100 and the contact end 210 jointly clamp the main bearing ring 1000 to realize the lifting of the main bearing ring 1000. Using the lever principle to clamp the main bearing ring 1000 to realize the lifting improves the connection stability between the lifting tool and the main bearing ring 1000 during the lifting process, reduces the possibility of the main bearing ring 1000 falling off, and ensures safe operation.

[0055] At the same time, when the lifting device is in use, part of the connecting piece 100 is inserted into the lifting hole 1100, and the lever force member 200 applies force upward to achieve the lifting of the main bearing ring 1000. It is easy to operate and safe to use. It has wide applicability and can be widely used in the lifting field.

[0056] In the above, the lever force applying member 200 includes a first rod body and a second rod body connected to one end of the first rod body, the first rod body and the second rod body have a preset angle, the first rod body is rotatably connected to the connecting member 100 near the second rod body, and the end of the first rod body facing away from the second rod body is the force applying end 220, and the end of the second rod body facing away from the first rod body is the contact end 210.

[0057] The first rod body is arranged in a straight rod shape, and the second rod body is arranged in a curved shape.

[0058] In this way, during use, the first rod body and the second rod body have a preset angle so that the angle between the second rod body set at the contact end 210 and the connecting member 100 during the lifting operation is an acute angle, thereby reducing the distance between the contact end 210 and the connecting member 100. When the lifting equipment lifts the first rod body, the contact end 210 quickly abuts against the annular groove 1200, thereby improving the lifting efficiency of the lifting equipment.

[0059] In some embodiments, the lever force applying member 200 is integrally formed.

[0060] Furthermore, the side surface and end surface of the contact end 210 are used to abut against the groove bottom and side wall of the annular groove 1200 respectively.

[0061] It can be understood that the annular groove 1200 is opened according to a preset depth, that is, it has an upper and lower groove bottom and an annular side wall. When the contact end 210 abuts against the annular groove 1200, the side of the contact end 210 abuts against the upper groove bottom of the annular groove 1200, and the end face of the contact end 210 abuts against the annular side wall of the annular groove 1200, that is, the contact end 210 abuts against the annular top angle of the annular groove 1200, which reduces the possibility of contact sliding when the contact end 210 abuts against the annular groove 1200, ensures stable contact between the abutting end and the main bearing ring 1000, and thereby improves the lifting stability of the sling.

[0062] In addition, the contact end 210 is configured to be pointed and has a chamfer.

[0063] In a specific implementation, the contact end 210 with a pointed tip improves the accuracy of the contact position of the contact end 210 with the main bearing ring 1000, avoids invalid abutment, and the chamfer provided on the contact end 210 increases the contact area between the contact end 210 and the main bearing ring 1000, thereby enhancing the connection stability between the lever force member 200 and the main bearing ring 1000 during the lifting process.

[0064] Specifically, when the contact end 210 abuts against the annular groove 1200, the side surface and the end surface of the contact end 210 are attached to the bottom and the side wall of the annular groove 1200.

[0065] In some embodiments, the contact end 210 is provided with a copper plating layer.

[0066] In this way, during use, by providing a copper plating layer on the contact end 210, the oxidation corrosion that may be caused by the long-term contact of the contact end 210 with air is reduced, the change of the internal structure of the contact end 210 caused by corrosion is avoided, the use safety of the contact end 210 is ensured, and at the same time, the service life of the contact end 210 is extended.

[0067] Specifically, a force application hole 221 is formed in the force application end 220, and the force application hole 221 is used to be connected to a lifting device through a connecting rope. The force application hole 221 is formed at one end of the first rod body away from the second rod body.

[0068] In specific implementation, the formation of the force application hole 221 realizes the detachable connection between the lever force application member 200 and the lifting device, and improves the convenience of connecting the lever force application member 200 to the lifting device.

[0069] Furthermore, the lever force application member 200 extends from the contact end 210 towards the force application end 220, its thickness is constant, and its width gradually becomes smaller.

[0070] As described above, the connecting member 100 includes an inner hole positioning rod 110 and a connecting pile 120.

[0071] Among them, the inner hole positioning rod 110 is used to be inserted into the hoisting hole 1100.

[0072] The top end of the connecting pile 120 is rotatably connected to the lever force application member 200, the bottom end of the connecting pile 120 is fixedly connected to the top end of the inner hole positioning rod 110, the outer diameter of the bottom end of the connecting pile 120 is larger than the diameter of the hoisting hole 1100, and the connecting pile 120 is used to abut against the side surface of the main bearing ring 1000.

[0073] It can be understood that before hoisting the main bearing ring 1000, the inner hole positioning rod 110 is inserted into the hoisting hole 1100 to determine the relative position between the connecting member 100 and the main bearing ring 1000. The connecting pile 120 abuts against the side surface of the main bearing ring 1000 as the base pile of the lever force application member 200, improving the connection stability between the lifting tool and the main bearing ring 1000.

[0074] Furthermore, the connecting member 100 is integrally formed.

[0075] In some embodiments, the connecting pile 120 has a mounting groove 121, and the mounting groove 121 communicates with the two opposite side surfaces of the connecting pile 120. A part of the lever force applying member 200 is inserted into the mounting groove 121.

[0076] In a specific implementation, a part of the lever force applying member 200 is inserted into the mounting groove 121 and is rotatably connected to the connecting pile 120. The opening of the mounting groove 121 enables the two sides of the lever force applying member 200 to be respectively rotatably connected to the two opposite inner walls of the mounting groove 121, improving the connection stability between the lever force applying member 200 and the connecting pile 120.

[0077] In the above, the lifting appliance further includes a connecting shaft 300. Connecting holes are symmetrically opened on the two side walls of the mounting groove 121, and a rotating hole is opened on the lever force applying member 200. The connecting shaft 300 is arranged to penetrate through the rotating hole and the two connecting holes at the same time.

[0078] In this way, during use, the connecting shaft 300 penetrates through the rotating hole of the lever force applying member 200, and at the same time, both ends of the connecting shaft 300 are respectively located in the two connecting holes, realizing the rotational connection between the lever force applying member 200 and the connecting pile 120 and improving the rotational connection stability.

[0079] In some embodiments, the connecting shaft 300 is a bolt.

[0080] Among them, the connecting shaft 300 includes but is not limited to bolts. Any workpiece that realizes the rotational connection between the lever force applying member 200 and the connecting pile 120 is within the protection scope of this application and will not be elaborated here.

[0081] For the lever-type lifting appliance provided by this application, before hoisting the main bearing ring 1000, the force applying end 220 of the lever force applying member 200 is connected to a hoisting device through a connecting rope. Subsequently, the inner hole positioning rod 110 is inserted into the hoisting hole 1100 to determine the relative position between the connecting member 100 and the main bearing ring 1000. The connecting pile 120 acts as the base pile of the lever force applying member 200 and abuts against the side surface of the main bearing ring 1000. The hoisting device pulls up the force applying end 220. The force applying end 220 receives the hoisting force of the hoisting device, and the lever force applying member 200 rotates relative to the connecting member 100 along the connecting shaft 300 until the contact end 210 abuts against the bottom and side walls of the annular groove 1200. Thus, the connecting member 100 and the contact end 210 act on the main bearing ring 1000 together, thereby realizing the hoisting of the main bearing ring 1000. Using the lever principle to clamp the main bearing ring 1000 for hoisting improves the connection stability between the lifting appliance and the main bearing ring 1000 during the hoisting process, reduces the possibility of the main bearing ring 1000 falling off, and ensures safe operation.

[0082] Those skilled in the art will readily conceive of other embodiments of this application after considering the specification and practicing the technical solutions disclosed herein.

[0083] This application is intended to cover any variations, uses, or adaptations of this application, which follow the general principles of this application and include well-known common general knowledge or conventional technical means in the technical field not disclosed in this application.

[0084] The description and examples are only regarded as exemplary, and the true scope and spirit of this application are pointed out by the following claims.

[0085] It should be understood that this application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is only limited by the appended claims.

Claims

1. A lever-type lifting device for lifting a main bearing ring (1000), wherein a lifting hole (1100) is provided on a side of the main bearing ring (1000), and an annular groove (1200) is provided on at least one end surface of the main bearing ring (1000), characterized in that: include: A connecting piece (100), a portion of the connecting piece (100) being used to be inserted into the hanging hole (1100); A lever force applying member (200), the lever force applying member (200) being rotatably connected to the connecting member (100), the lever force applying member (200) having a contact end (210) and a force applying end (220), the rotatable connection between the connecting member (100) and the lever force applying member (200) being located between the contact end (210) and the force applying end (220), and the force applying end (220) being used for connecting a lifting device; The lever force applying member (200) is configured to rotate relative to the connecting member (100) when the force applying end (220) is subjected to the lifting force of the lifting equipment, so that the contact end (210) is inserted into the annular groove (1200), and the connecting member (100) and the contact end (210) jointly clamp the main bearing ring (1000) to lift the main bearing ring (1000).

2. The lever type sling according to claim 1, characterized in that: The lever force applying member (200) comprises a first rod body and a second rod body connected to one end of the first rod body, the first rod body and the second rod body have a preset angle, the first rod body is rotatably connected to the connecting member (100) near the second rod body, and the end of the first rod body facing away from the second rod body is the force applying end (220), and the end of the second rod body facing away from the first rod body is the contact end (210).

3. The lever type sling according to claim 1, characterized in that: The side surface and end surface of the contact end (210) are respectively used to abut against the groove bottom and side wall of the annular groove (1200).

4. The lever type sling according to claim 1, characterized in that: The contact end (210) is arranged in a pointed shape, and the contact end (210) is provided with a chamfer.

5. The lever type sling according to claim 1, characterized in that: The contact end (210) is provided with a copper plating layer.

6. The lever type sling according to claim 1, characterized in that: The force applying end (220) is provided with a force applying hole (221), and the force applying hole (221) is used to be connected to the lifting equipment via a connecting rope.

7. The lever type spreader according to any one of claims 1 to 6, characterized in that: The connecting member (100) comprises: An inner hole positioning rod (110), the inner hole positioning rod (110) being used to be inserted into the hoisting hole (1100); A connecting pile (120), the top end of the connecting pile (120) is rotatably connected to the lever force member (200), the bottom end of the connecting pile (120) is fixedly connected to the top end of the inner hole positioning rod (110), the outer diameter of the bottom end of the connecting pile (120) is larger than the diameter of the lifting hole (1100), and the connecting pile (120) is used to abut against the side of the main bearing ring (1000).

8. The lever type spreader according to claim 7, characterized in that: The connecting pile (120) is provided with a mounting groove (121), the mounting groove (121) is communicated with two opposite side surfaces of the connecting pile (120), and the lever force applying member (200) is partially inserted into the mounting groove (121).

9. The lever type spreader according to claim 8, characterized in that: It also includes a connecting shaft (300), connecting holes are symmetrically provided on the two side walls of the installation groove (121), a rotating hole is provided on the lever force applying member (200), and the connecting shaft (300) passes through the rotating hole and the two connecting holes at the same time.

10. The lever type spreader according to claim 9, characterized in that: The connecting shaft (300) is a bolt.

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