A tool for installing seat ring foundation bolt pressure plate

Abstract

The present application relates to a tool for installing a seat ring foundation bolt pressure plate. The tool for installing a seat ring foundation bolt pressure plate comprises a power rod, on which a semicircular lifting ring is provided; a U-shaped frame connected to one end of the power rod, on which a first limiting column, a second limiting column, a third limiting column and a fourth limiting column are provided, and the first limiting column and the third limiting column are symmetrically arranged, and the second limiting column and the fourth limiting column are symmetrically arranged. The distance from the semicircular lifting ring to the beginning of the power rod of the present application is greater than the distance from the semicircular lifting ring to the end of the power rod. When the semicircular lifting ring is used as a fulcrum, the part from the semicircular lifting ring to the beginning of the power rod is used as a power arm, and the part from the semicircular lifting ring to the end of the U-shaped frame is used as a resistance arm. Since the power arm is greater than the resistance arm, the power rod and the U-shaped frame form a labor-saving lever, and the lever principle is used to pull up the pressure plate to achieve the purpose of labor saving, thereby reducing labor intensity.

Description

Technical Field

[0001] The present application relates to the technical field of bolt pressure plate installation, and in particular to a tool for installing a seat ring base bolt pressure plate. Background Art

[0002] The seat ring is not only a load-bearing component but also a flow-passing component, and is also an important installation reference component of the mixed flow unit. It bears the axial water thrust of the turbine, the weight of the unit, the weight of the concrete on the upper part of the seat ring and other loads, and transfers the load to the lower foundation. Its strength and rigidity must meet the requirements, and its flow-passing surface should be streamlined. The seat ring is located between the volute and the movable guide vane, and is an annular structural component. It is usually composed of an upper ring, a lower ring and several fixed guide vanes. The circumference of the upper ring and the lower ring is connected to the volute, the inner ring flange of the upper ring is connected to the top cover, and the base ring is installed on the inner ring flange of the lower ring.

[0003] The installation method of the bolt pressure plate is as follows: first, the nuts and bolts need to be assembled accurately to ensure that they are correctly connected together, then the bolt pressure plate is placed between the nuts and bolts to fix them together, and then according to the actual situation, the position of the bolt pressure plate is adjusted so that it can completely cover the nuts and bolts, and finally, tools such as wrenches or pliers are used to completely fix the bolt pressure plate on the nuts and bolts. When tightening, pay attention to the force to be moderate and not too tight to avoid damaging the bolts and nuts.

[0004] During the installation of the traditional seat ring foundation bolt pressure plate, the weight of the pressure plate is usually as high as tens of kilograms. The installation position is at a certain height, and the pressure plate needs to be lifted to the corresponding height by manpower, so there is a problem of high labor intensity. Utility Model Content

[0005] In order to solve or partially solve the problems existing in the related art, the present application provides a tool for installing a seat ring foundation bolt pressure plate.

[0006] To achieve the above objectives, this application is implemented through the following technical solutions:

[0007] A tool for installing a seat ring foundation bolt pressure plate, the tool for installing a seat ring foundation bolt pressure plate comprising:

[0008] A power rod, on which a semicircular lifting ring is provided;

[0009] A U-shaped frame connected to one end of the power rod is provided with a first limiting column, a second limiting column, a third limiting column and a fourth limiting column, wherein the first limiting column and the third limiting column are symmetrically arranged, and the second limiting column and the fourth limiting column are symmetrically arranged;

[0010] Among them, the distance from the semicircular lifting ring to the starting end of the power rod is greater than the distance from the semicircular lifting ring to the end of the power rod. When the semicircular lifting ring is used as a fulcrum, the power rod and the U-shaped frame form a force-saving lever.

[0011] Optionally, the power rod is a thin-walled steel pipe with a length of 2000 mm and a diameter of 20 mm.

[0012] Optionally, the distance between the semicircular hanging ring and the U-shaped frame is 500 mm.

[0013] Optionally, the first limiting column, the second limiting column, the third limiting column and the fourth limiting column are all round steel with a height of 50 mm and a diameter of 10 mm.

[0014] Optionally, the distance from the connection between the power rod and the U-shaped frame to the first limiting column is 246 mm.

[0015] Optionally, a first slide groove and a second slide groove are symmetrically provided inside the U-shaped frame, and the bottom of the first limiting column extends into the first slide groove and is slidably connected thereto;

[0016] The bottom of the third limiting column extends into the second sliding groove and is slidably connected thereto.

[0017] Optionally, a first installation shaft is provided in the first slide groove, a first compression spring is sleeved on the first installation shaft, and one end of the first compression spring away from the first installation shaft is fixedly connected to the first limiting column;

[0018] A second installation shaft is arranged in the second slide groove, a second compression spring is sleeved on the second installation shaft, and one end of the second compression spring away from the second installation shaft is fixedly connected to the third limiting column.

[0019] The beneficial effects of the present application are as follows: the distance from the semicircular lifting eye to the starting end of the power rod of the present application is greater than the distance from the semicircular lifting eye to the end of the power rod. When the semicircular lifting eye is used as a fulcrum, the part from the semicircular lifting eye to the starting end of the power rod is used as a power arm, and the part from the semicircular lifting eye to the end of the U-shaped frame is used as a resistance arm. Since the power arm is greater than the resistance arm, the power rod and the U-shaped frame form a labor-saving lever, and the pressure plate is pulled up using the lever principle to achieve the purpose of labor saving, thereby reducing labor intensity.

[0020] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0022] Figure 1 is a top view of a tool for installing a seat ring foundation bolt pressure plate shown in the first embodiment of the present application;

[0023] Figure 2 is a front view of a tool for installing a seat ring foundation bolt pressure plate shown in the first embodiment of the present application;

[0024] Figure 3 is a top view of the U-shaped frame shown in the second embodiment of the present application;

[0025] Figure 4 It is a front view of the U-shaped frame shown in the second embodiment of the present application.

[0026] Figure numerals: 1 power rod, 2 lifting ring, 3 U-shaped frame, 4 first limiting column, 5 second limiting column, 6 third limiting column, 7 fourth limiting column, 8 first slide groove, 9 second slide groove, 10 first installation axis, 11 first compression spring, 12 second installation axis, 13 second compression spring. DETAILED DESCRIPTION

[0027] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific situation.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0032] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

[0033] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0034] In order to make the purpose, technical solutions and beneficial effects of the present application clearer, the preferred embodiments of the present application will be described in detail below in conjunction with the accompanying drawings to facilitate understanding by technical personnel.

[0035] Embodiment 1:

[0036] See also Figure 1 and Figure 2 , a tool for installing a seat ring foundation bolt pressure plate, the tool for installing a seat ring foundation bolt pressure plate comprising:

[0037] A power rod 1, on which a semicircular lifting ring 2 is provided;

[0038] A U-shaped frame 3 connected to one end of the power rod 1 is provided with a first limiting column 4, a second limiting column 5, a third limiting column 6 and a fourth limiting column 7, and the first limiting column 4 and the third limiting column 6 are symmetrically arranged, and the second limiting column 5 and the fourth limiting column 7 are symmetrically arranged;

[0039] Among them, the distance from the semicircular lifting ring 2 to the beginning of the power rod 1 is greater than the distance from the semicircular lifting ring 2 to the end of the power rod 1. When the semicircular lifting ring 2 is used as a fulcrum, the power rod 1 and the U-shaped frame 3 form a labor-saving lever.

[0040] Specifically, the lower end of the semicircular lifting ring 2 is fixedly connected to the upper end of the outer wall of the power rod 1, one end of the power rod 1 is fixedly connected to one end of the U-shaped frame 3 close to the first limiting column 4 and the second limiting column 5, the bottoms of the first limiting column 4, the second limiting column 5, the third limiting column 6 and the fourth limiting column 7 are all fixedly connected to the upper end of the outer wall of the U-shaped frame 3, and the first limiting column 4 and the third limiting column 6 are symmetrically arranged, and the second limiting column 5 and the fourth limiting column 7 are symmetrically arranged, so that the four limiting columns form a limiting space, thereby limiting the pressure plate on the U-shaped frame 3;

[0041] When in use, fix the hand chain hoist on the wall reinforcement. The hook of the hand chain hoist should be of sufficient length to facilitate hooking the hook into the semicircular lifting ring 2; lift the pressure plate and put it into the limiting space formed by four limiting columns to ensure that it does not slip. The U-shaped frame 3 can support the pressure plate, and then slowly pull up the hoist. When the hook position is flush with the seat ring foundation bolt, one person presses down the starting end of the power rod 1. At this time, the semicircular lifting ring 2 becomes a fulcrum, so that the part from the semicircular lifting ring 2 to the starting end of the power rod 1 serves as the power arm, and the part from the semicircular lifting ring 2 to the end of the U-shaped frame 3 serves as the resistance arm. Since the power arm is larger than the resistance arm, the power rod 1 and the U-shaped frame 3 constitute a labor-saving lever, and the lever principle is used to pull up the pressure plate to achieve the purpose of labor saving, thereby reducing labor intensity. Finally, push in the bolts and tighten the fixing nuts to complete the installation of the pressure plate.

[0042] In this embodiment, the starting end of the power rod 1 is the end away from the U-shaped frame 3 , the end of the power rod 1 is the end close to the U-shaped frame 3 , and the end of the U-shaped frame 3 is the end away from the power rod 1 .

[0043] Embodiment 2:

[0044] See also Figure 1 and Figure 2 Based on the first embodiment, further and optionally, the power rod 1 is a thin-walled steel pipe with a length of 2000 mm and a diameter of 20 mm.

[0045] Specifically, the length of the power rod 1 is selected according to the working environment and the size of the pressure plate. Taking the installation of a seat ring foundation bolt pressure plate with an outer diameter of 350mm and a single weight of 46kg as an example, the length of the power rod 1 is 2000mm to meet the demand. At the same time, a thin-walled steel pipe with a diameter of 20mm is selected. While meeting the strength requirements, it can also reduce the weight of the device and save costs.

[0046] Further and optionally, the distance between the semicircular hanging ring 2 and the U-shaped frame 3 is 500 mm.

[0047] Specifically, the spacing between the semicircular lifting ring 2 and the U-shaped frame 3 is 500mm, and the length from the semicircular lifting ring 2 to the starting end of the power rod 1 is 1500mm; the length of the U-shaped frame 3 is selected according to the size of the pressing plate, and is generally slightly larger than the outer diameter of the pressing plate. Taking the pressing plate with an outer diameter of 350mm as an example, the length of the U-shaped frame 3 can be selected between 400mm and 500mm. Even if a length of 500mm is selected, the length from the semicircular lifting ring 2 to the end of the U-shaped frame 3 is only 1000mm, which is less than the length of 1500mm from the semicircular lifting ring 2 to the starting end of the power rod 1, and can constitute a labor-saving lever.

[0048] Further and optionally, the first limiting column 4, the second limiting column 5, the third limiting column 6 and the fourth limiting column 7 are all round steel with a height of 50 mm and a diameter of 10 mm.

[0049] Specifically, the heights of the first limiting column 4, the second limiting column 5, the third limiting column 6 and the fourth limiting column 7 are greater than the thickness of the pressure plate, so as to better limit the pressure plate; the strength requirements can be met by using round steel with a diameter of 10 mm, and round steel is easy to obtain and has a simple source.

[0050] Further and optionally, the distance from the connection point between the power rod 1 and the U-shaped frame 3 to the first limiting column 4 is 246 mm.

[0051] Specifically, taking a pressure plate with an outer diameter of 350 mm as an example, the distance from the connection between the power rod 1 and the U-shaped frame 3 to the first limiting column 4 is 246 mm, so that the pressure plate can be restricted on the U-shaped frame 3.

[0052] Embodiment three:

[0053] See also Figure 3 and Figure 4 , based on the first embodiment, further and optionally, a first slide groove 8 and a second slide groove 9 are symmetrically opened inside the U-shaped frame 3, and the bottom of the first limiting column 4 extends into the first slide groove 8 and is slidably connected thereto;

[0054] The bottom of the third limiting column 6 extends into the second sliding groove 9 and is slidably connected thereto.

[0055] Specifically, the first limiting column 4 is driven to slide in the first sliding groove 8 to change the distance between the first limiting column 4 and the second limiting column 5, and the third limiting column 6 is driven to slide in the second sliding groove 9 to change the distance between the third limiting column 6 and the fourth limiting column 7, thereby realizing the adjustment of the limiting size.

[0056] Further and optionally, a first installation shaft 10 is provided in the first slide groove 8, a first compression spring 11 is sleeved on the first installation shaft 10, and one end of the first compression spring 11 away from the first installation shaft 10 is fixedly connected to the first limiting column 4;

[0057] A second installation shaft 12 is disposed in the second sliding groove 9 , and a second compression spring 13 is sleeved on the second installation shaft 12 . One end of the second compression spring 13 away from the second installation shaft 12 is fixedly connected to the third limiting column 6 .

[0058] Specifically, one end of the first mounting shaft 10 is fixed in the first slide groove 8, the first compression spring 11 is sleeved on the first mounting shaft 10, the first compression spring 11 can be extended and retracted on the first mounting shaft 10, and the end of the first compression spring 11 away from the first mounting shaft 10 is fixedly connected to the bottom side wall of the first limiting column 4; one end of the second mounting shaft 12 is fixed in the second slide groove 9, the second compression spring 13 is sleeved on the second mounting shaft 12, the second compression spring 13 can be extended and retracted on the second mounting shaft 12, and the end of the second compression spring 13 away from the second mounting shaft 12 is fixedly connected to the bottom side wall of the third limiting column 6;

[0059] When the side wall of the pressure plate abuts against the first limiting column 4 and the third limiting column 6, the first compression spring 11 and the second compression spring 13 can be compressed by pressing the pressure plate, so as to drive the first limiting column 4 and the third limiting column 6 to slide in the first slide groove 8 and the second slide groove 9 respectively, thereby realizing the adjustment of the limiting size, so as to adapt to pressure plates of different specifications and expand the application range of the device;

[0060] In addition, since the spring has a preload force, the fixing of the pressure plate will be more stable.

[0061] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present application; the dimensions of the drawings are not related to the specific objects, and the dimensions of the objects can be changed arbitrarily.

Claims

1. A tool for installing a seat ring foundation bolt pressure plate, characterized in that: The tool for installing the seat ring foundation bolt pressure plate includes: A power rod (1) having a semicircular lifting ring (2) disposed thereon; A U-shaped frame (3) connected to the end of the power rod (1) is provided with a first limiting column (4), a second limiting column (5), a third limiting column (6) and a fourth limiting column (7), wherein the first limiting column (4) and the third limiting column (6) are symmetrically arranged, and the second limiting column (5) and the fourth limiting column (7) are symmetrically arranged; The distance between the semicircular lifting ring (2) and the beginning of the power rod (1) is greater than the distance between the semicircular lifting ring (2) and the end of the power rod (1). When the semicircular lifting ring (2) is used as a fulcrum, the power rod (1) and the U-shaped frame (3) form a labor-saving lever.

2. The tool for installing the seat ring foundation bolt pressure plate according to claim 1, characterized in that: The power rod (1) is a thin-walled steel pipe with a length of 2000 mm and a diameter of 20 mm.

3. The tool for installing the seat ring foundation bolt pressure plate according to claim 1, characterized in that: The distance between the semicircular hanging ring (2) and the U-shaped frame (3) is 500 mm.

4. The tool for installing the seat ring foundation bolt pressure plate according to claim 1, characterized in that: The first limiting column (4), the second limiting column (5), the third limiting column (6) and the fourth limiting column (7) are all round steel with a height of 50 mm and a diameter of 10 mm.

5. The tool for installing the seat ring foundation bolt pressure plate according to claim 1, characterized in that: The distance from the connection point between the power rod (1) and the U-shaped frame (3) to the first limiting column (4) is 246 mm.

6. The tool for installing the seat ring foundation bolt pressure plate according to claim 1, characterized in that: The U-shaped frame (3) is symmetrically provided with a first slide groove (8) and a second slide groove (9), and the bottom of the first limiting column (4) extends into the first slide groove (8) and is slidably connected thereto; The bottom of the third limiting column (6) extends into the second sliding groove (9) and is slidably connected thereto.

7. The tool for installing the seat ring foundation bolt pressure plate according to claim 6, characterized in that: A first installation shaft (10) is provided in the first sliding groove (8), a first compression spring (11) is sleeved on the first installation shaft (10), and one end of the first compression spring (11) away from the first installation shaft (10) is fixedly connected to the first limiting column (4); A second installation shaft (12) is arranged in the second sliding groove (9), a second compression spring (13) is sleeved on the second installation shaft (12), and one end of the second compression spring (13) away from the second installation shaft (12) is fixedly connected to the third limiting column (6).

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