Cast iron step mounting and positioning device
By utilizing the telescopic structure of the left and right uprights and the cooperation of the positioning clamps, the problems of inaccurate and loose installation of cast iron steps were solved, achieving secure installation and convenient construction of cast iron steps.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOHYDRO BUREAU 11 CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-12
AI Technical Summary
In the existing technology, the installation position of cast iron steps is difficult to fix accurately, and they are prone to loosening or misalignment during construction, resulting in a low pass rate and great difficulty in subsequent rectification.
The system employs a telescopic structure including a left and right upright post, combined with positioning clamps, and uses bolts for fixing and spring adjustment to ensure accurate positioning and secure installation of the cast iron steps.
It achieves accurate positioning and secure installation of cast iron steps, is convenient to construct, has good appearance quality, is easy to disassemble, and is easy to handle and move, in accordance with construction specifications.
Smart Images
Figure CN224228668U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, and in particular to a cast iron step installation and positioning device. Background Technology
[0002] Currently, various water and power pipeline projects incorporate inspection wells or valve wells in the middle of the lines to facilitate personnel access for maintenance during operation. Cast iron steps are installed on the well walls, starting from the ground level and working upwards to the well cover. The installation location and technical requirements for the steps are generally standardized according to the specifications in the drawings. The cast iron steps are staggered horizontally, with a vertical spacing of 36cm and a center-to-center spacing of 30cm. During installation, the step positions are first determined, and then, based on the well wall construction height, the steps are fixed to the pre-measured positions on the well wall, ensuring they are secure, reliable, safe, and aesthetically pleasing, preventing loosening and displacement.
[0003] In actual construction, cast-in-place concrete manholes are constructed by pre-embedding cast iron steps through openings in the formwork; modular and brick manholes are constructed by installing cast iron steps while building the structure, using mortar for fixation. While both methods securely install the cast iron steps, they also require alignment in both horizontal and vertical directions for aesthetic purposes, and the spacing between the steps must meet acceptance requirements. Inspections revealed that the pass rates for both methods were generally low, and subsequent rectification was difficult. Utility Model Content
[0004] The purpose of this utility model is to solve the problems in the prior art by proposing a cast iron step installation and positioning device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A cast iron step installation and positioning device includes: a left upright and a right upright with adjustable spacing via a telescopic structure; positioning clamps are respectively provided on the left side of the left upright and the right side of the right upright corresponding to the layer spacing and staggered layering of the cast iron steps;
[0007] In use, the left and right uprights are adjusted to be located inside the cast iron steps on both sides; the positioning clamps hold the cast iron steps in place.
[0008] In some embodiments, the top ends of the left and right uprights are respectively fixedly provided with connecting rods;
[0009] Multiple left and right uprights can be assembled to form different heights.
[0010] In some embodiments, the telescopic structure comprises: at least two sets of sleeved telescopic rods respectively provided on opposite sides of the left and right uprights; bolt holes are provided on the sleeved telescopic rods;
[0011] After the left and right uprights are adjusted, they are fixed with bolts so that they correspond to the inside of the cast iron steps.
[0012] In some embodiments, the positioning clamp consists of a lower support plate and an upper pressure plate;
[0013] The upper pressure plate is threaded with a top pressure screw; or, the lower end of the upper pressure plate is provided with a raised limiting strip that cooperates with the cast iron step.
[0014] In some embodiments, the spacing between the lower support plate and the upper pressure plate can be adjusted;
[0015] A sliding screw is provided between the lower support plate and the upper pressure plate; a spring, a pressure plate, and an adjusting nut are fitted on the screw; the upper and lower ends of the spring contact the lower end of the pressure plate and the upper end of the upper pressure plate, respectively.
[0016] The upper pressure plate is threaded with a top pressure screw; or, the lower end of the upper pressure plate is provided with a raised limiting strip that cooperates with the cast iron step.
[0017] In some embodiments, the positioning clamp is detachable and adjustable up and down on the left or right upright.
[0018] In some embodiments, a mounting base is integrally provided at the lower end of the lower support plate; elongated holes are provided through the left and right uprights; the mounting base is fitted with at least two long bolts, which are fixed after passing through the elongated holes.
[0019] In some embodiments, the left and right uprights are fitted with top wall rods that extend from front to back.
[0020] In some embodiments, the left and right uprights are provided with through holes running through them, and internally threaded cylinders are fixedly installed through them.
[0021] The top wall rod is assembled with the internal threaded cylinder, and the support is adjusted by screwing it in and out.
[0022] In some embodiments, the front end of the top wall rod is provided with a sphere, and the rear end is provided with a force-applying rod perpendicular to its axis.
[0023] Compared with the prior art, the present invention provides a cast iron step installation and positioning device, which has the following beneficial effects.
[0024] 1. This utility model provides a method for fixing the position of cast iron steps during the installation of cast iron steps in the construction of inspection well walls using a positioning device. After using this device, the installation and positioning of the cast iron steps in the well wall are accurate, without loosening or misalignment, making construction more convenient and standardized, and resulting in good appearance quality. After the well wall construction is completed, the casting iron step installation and positioning device can be removed. Its disassembly is simple, and it can be easily transported, placed, and moved.
[0025] 2. This utility model has a simple structure, standardized operation, and concise appearance; multiple sets can be spliced together to cope with various well wall heights, ensuring that the steps are firm, reliable, safe, and aesthetically pleasing; after use, it is easy to carry, simple and quick to install and use, and the components are accurately and effectively positioned.
[0026] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the structure of this utility model.
[0028] Figure 2 This is a front view structural diagram of the present invention.
[0029] Figure 3 for Figure 2 A magnified structural diagram of point A in the middle.
[0030] Figure 4 This is a side view of the present invention.
[0031] Figure 5 This is a top view of the structure of this utility model.
[0032] Figure 6 This is a structural diagram of the left and right uprights.
[0033] Figure 7 This is a schematic diagram of the top part of this utility model.
[0034] Figure 8 This is a schematic diagram of the rear structure of the top part of this utility model.
[0035] Figure 9 This is a schematic diagram of the exploded state of the top part of this utility model.
[0036] Figure 10 This is a schematic diagram of the positioning clamp.
[0037] Figure 11 This is a schematic diagram of the lower structure of the positioning clamp.
[0038] Figure 12 This is a schematic diagram of the rear structure of the positioning clamp.
[0039] Figure 13 This is a schematic diagram of the explosion state of the positioning clamp.
[0040] Figure 14This is a schematic diagram of the second mating state of the positioning clamp.
[0041] Figure 15 This is a schematic diagram of the lower side of the second structure of the positioning clamp.
[0042] Figure 16 This is a schematic diagram of the rear side of the second structure of this utility model.
[0043] Figure 17 A schematic diagram showing the positioning clamp plate in conjunction with the cast iron step.
[0044] Figure 18 This is a schematic diagram showing the state of the raised limit strip.
[0045] In the picture:
[0046] 1. Left upright; 2. Right upright; 3. Positioning clamp; 31. Lower support plate; 32. Upper pressure plate; 33. Top pressure screw; 34. Protruding limit strip; 4. Connecting rod; 5. Sleeve telescopic rod; 6. Screw; 61. Spring; 62. Pressure plate; 63. Adjusting nut; 7. Mounting base; 71. Long hole; 8. Top wall rod; 81. Internal threaded cylinder; 82. Sphere; 83. Force application rod. Detailed Implementation
[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0048] Reference Figure 1-18 A cast iron step installation and positioning device includes: a left upright 1 and a right upright 2 with adjustable spacing via a telescopic structure; positioning clamps 3 are respectively provided on the left side of the left upright 1 and the right side of the right upright 2, corresponding to the staggered layer spacing of the cast iron steps; that is, the left upright 1 clamps and positions the cast iron steps on the left side, and the right upright 2 clamps and positions the cast iron steps on the right side; since the cast iron steps are staggered on the left and right sides, the standard spacing between each layer is 36 cm; that is, the standard spacing between two cast iron steps on each side is 72 cm.
[0049] like Figure 2 As shown; in use, the left upright 1 and right upright 2 are adjusted to be located inside the cast iron steps on both sides; the positioning clamp 3 clamps the cast iron steps from the top and bottom.
[0050] Furthermore, connecting rods 4 are fixedly installed at the top of the left upright 1 and the right upright 2 respectively; thus, multiple left upright 1 and right upright 2 can be assembled to form different heights to adapt to well construction operations at different depths.
[0051] In some embodiments, the telescopic structure is: at least two sets of sleeved telescopic rods 5 are respectively provided on opposite sides of the left upright 1 and the right upright 2.
[0052] The telescopic rod 5 includes an outer rod and an inner rod that fit together, and is fixed to the left upright 1 or the right upright 2 respectively. In the normal storage state, it is in a retracted state, with the left upright 1 and the right upright 2 close together, occupying less space.
[0053] Furthermore, bolt holes are provided on the telescopic rod 5.
[0054] After adjusting the left upright 1 and right upright 2, bolts are inserted to fix them so that they correspond to the inside of the cast iron steps.
[0055] The bolt holes are provided in at least one set to lock the length of the telescopic rod 5 when it is adjusted to the use state; preferably, two sets of bolt holes are provided to lock the use state and the storage state respectively.
[0056] In some embodiments, the positioning clamp 3 consists of a lower support plate 31 and an upper pressure plate 32, which limit the cast iron step by means of the two side clamps.
[0057] It should be noted that at this time, the lower support plate 31 and the upper pressure plate 32 can be fixedly welded to the left upright 1 or the right upright 2; the distance between the two is fixed and slightly larger than the thickness of the conventional cast iron step clamping part.
[0058] Furthermore, in order to better clamp the cast iron step, the upper pressure plate 32 is threaded with a top pressure screw 33; after being locked in place, the top pressure screw 33 is screwed down to tightly press against the cast iron step.
[0059] Preferably, a nut is welded onto the upper pressure plate 32, and the top pressure screw 33 passes through the nut and the upper pressure plate 32; this makes the condition more reliable and stable.
[0060] In some embodiments, the distance between the lower support plate 31 and the upper pressure plate 32 can be adjusted, thereby making it easier to accommodate more specifications and models of cast iron steps.
[0061] Specifically, a sliding screw 6 is provided between the lower support plate 31 and the upper pressure plate 32; the screw 6 is assembled from bottom to top; a spring 61, a pressure plate 62, and an adjusting nut 63 are fitted on the screw 6; the upper and lower ends of the spring 61 contact the lower end of the pressure plate 62 and the upper end of the upper pressure plate 32, respectively; in use, the spring 61 pushes the upper pressure plate 32 downward, so that the lower support plate 31 and the upper pressure plate 32 approach each other.
[0062] At this time, the distance between the lower support plate 31 and the upper pressure plate 32 can be adjusted by the action of the spring 61; it can adapt to different cast iron steps.
[0063] Further:
[0064] The upper pressure plate 32 is threaded with a top pressure screw 33 to provide different fixing pressures;
[0065] Alternatively, the lower end of the upper pressure plate 32 is provided with a raised limiting strip 34 that cooperates with the cast iron step.
[0066] like Figure 17 , 18 As shown, the raised limiting strip 34 is corner-shaped and works in conjunction with the hollow area of the cast iron step to achieve highly reliable clamping and positioning without requiring a large contact surface.
[0067] It is understandable that when dealing with cast iron steps of different specifications and styles, the upper pressure plate 32 with the corresponding raised limit strip 34 can be replaced (generally, the cast iron steps of a project are the same, and the upper pressure plate 32 needs to be replaced in different projects).
[0068] It is understandable that the size of the positioning clamp 3 does not need to be very large, as long as it can effectively clamp and fix the iron step. For example, in some preferred embodiments, the size of the positioning clamp 3 is set to be less than 10 cm (e.g., 50 mm * 50 mm), while the tread surface of the cast iron step is larger than this size. Of course, in order to obtain a larger clamping surface, the size of the positioning clamp 3 can cover the width of the cast iron step.
[0069] In some embodiments, the positioning clamp 3 can be detachably and adjusted vertically on the left upright 1 or the right upright 2.
[0070] Therefore, minor adjustments can be made in cases where it is difficult to require extremely precise installation positions due to factors such as brick stacking and the position of reinforcing bars.
[0071] Preferably, the lower end of the lower support plate 31 is integrally provided with a mounting base 7;
[0072] Meanwhile, elongated holes 71 are provided through the left and right uprights 1 and 2 respectively;
[0073] Mounting base 7 has a hole for mounting at least two long bolts, which are then fixed after passing through the elongated hole 71.
[0074] The positioning clamp 3 can be adjusted within a certain range by the cooperation of the long bolt and the long hole 71.
[0075] Understandably, after the long bolt passes through the elongated hole 71, the assembly gasket and nut are used to fix the position.
[0076] like Figures 9-13 As shown; in the case of detachable installation, the damaged positioning clamp 3 can also be replaced according to the usage.
[0077] In some embodiments, the left upright 1 and the right upright 2 are fitted with top wall rods 8 through the front and rear to form a resisting support against the well wall.
[0078] It is understandable that the well wall is curved in many cases; at least two contact points are needed to support the cast iron steps; the number of top wall rods 8 can be selected according to the site conditions; for example, two can be set near the top and two near the bottom; and the overall shape can be controlled by adjusting the top wall rods 8.
[0079] In some embodiments, the left upright 1 and the right upright 2 are provided with through holes in the front and rear, and an internally threaded cylinder 81 is fixedly installed through them; the top wall rod 8 is assembled with the internally threaded cylinder 81, and the support is adjusted by screwing it in and out.
[0080] It should be noted that multiple internal threaded cylinders 81 are pre-installed on the left upright 1 and right upright 2, and a small number of top wall rods 8 are pre-installed or the top wall rods are not installed at the beginning. When using, select the appropriate internal threaded cylinder 81 according to the situation and install the top wall rod 8.
[0081] Furthermore, the front end of the top wall rod 8 is provided with a sphere 82, which can form a better contact surface for uneven support surfaces; and, whether it is cast-in-place concrete or brick well, only a very small indentation is formed that is easy to repair or does not require repair.
[0082] Furthermore, a force-applying rod 83 perpendicular to its axis is provided at the rear end for easy rotation.
[0083] Among them, the sphere 82 can be configured to be threaded onto the front end of the top wall rod 8.
[0084] In addition, the force-applying rod 83 can be integrally welded to the top wall rod 8; or, the force-applying rod 83 can be a non-integral form with a hole at the rear end of the top wall rod 8, and can be inserted vertically.
[0085] In use, first place the two rods vertically, parallel to the well wall, and then combine the left upright 1 and the right upright 2. According to the required spacing of the cast iron steps, place the cast iron steps on the well wall into the corresponding positioning clamps 3. The cast iron steps are in a fixed position and spacing on the rods. Adjust the distance between the left and right rods, connect the telescopic rod 5, tighten the bolts to lock it, and adjust the top wall rod 8. That is, this section of cast iron steps has been positioned and fixed. If the height of the well wall exceeds the height of the positioning device, it can be connected on top by the connecting rod 4 and locked with fastening bolts. Continuously assemble and combine the positioning support rods until the cast iron ladder installation position designed at the top of the well wall is reached.
[0086] This utility model primarily addresses the issue of installing cast iron steps on the inner walls of inspection wells or valve wells in various water supply pipelines and power pipeline projects, ensuring the steps are firmly, reliably, safely, and aesthetically pleasing, and providing a portable step installation positioning device. Based on the technical requirements and dimensions of relevant specifications and drawings for cast iron step installation, this utility model employs a combined device with clamping structures on two rods, used in conjunction with each other. During the installation of the cast iron steps in the inspection well wall construction, the positioning device fixes the position of the cast iron steps. After the well wall construction is completed, the casting iron step installation positioning device is removed. Furthermore, multiple sets of this casting iron step installation positioning device can be spliced together vertically to accommodate various well wall heights, ensuring the steps are firmly, reliably, safely, and aesthetically pleasing, without loosening or displacement.
[0087] This utility model provides a portable, easy-to-install, quick-to-use, and accurate casting iron step installation and positioning device. It consists of two uprights, left and right. The two uprights are joined together by a telescopic connecting rod 5, and the casting iron step is placed in the corresponding positioning clamp, allowing for well wall construction. The casting iron step is fixed in position and spacing on the positioning clamp, making it less susceptible to misalignment or tilting due to external factors. If the well wall is high, the casting iron step installation position also needs to be at a certain height. Multiple casting iron step installation and positioning devices can be used, with two uprights connected vertically for combined use. After use, disassembly is simple, facilitating easy transport, placement, and movement. This device has a simple structure, standardized operation, and a clean appearance. Using this device ensures accurate positioning of the casting iron step on the well wall, preventing loosening or misalignment, making construction more convenient and standardized, and resulting in a high-quality appearance.
[0088] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
[0089] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0090] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A cast iron step mounting and positioning device, characterized in that, include: The left upright (1) and right upright (2) are adjusted by telescopic structure; the left side of the left upright (1) and the right side of the right upright (2) are respectively provided with positioning clamps (3) corresponding to the layer spacing of the cast iron steps and staggered layers. In use, the left upright (1) and right upright (2) are adjusted to be located inside the cast iron steps on both sides; the positioning clamp (3) clamps the cast iron steps from top to bottom.
2. The cast iron step mounting and positioning device according to claim 1, characterized in that, The top ends of the left upright (1) and the right upright (2) are respectively fixed with connecting rods (4). Multiple left uprights (1) and right uprights (2) can be assembled to form different heights.
3. The cast iron step installation and positioning device according to claim 1, characterized in that, The telescopic structure is as follows: at least two sets of sleeve telescopic rods (5) are respectively provided on the opposite sides of the left upright (1) and the right upright (2); bolt holes are provided on the sleeve telescopic rods (5); After the left upright (1) and right upright (2) are adjusted, bolts are inserted to fix them so that they correspond to the inside of the cast iron step.
4. The cast iron step installation and positioning device according to claim 1, characterized in that, The positioning clamp (3) is composed of: a lower support plate (31) and an upper pressure plate (32); The upper pressure plate (32) is threaded with a top pressure screw (33).
5. The cast iron step mounting and positioning device according to claim 4, characterized in that, The distance between the lower support plate (31) and the upper pressure plate (32) is adjustable; A sliding screw (6) is provided between the lower support plate (31) and the upper pressure plate (32); a spring (61), a pressure plate (62), and an adjusting nut (63) are fitted on the screw (6); the upper and lower ends of the spring (61) are respectively in contact with the lower end of the pressure plate (62) and the upper end of the upper pressure plate (32); The upper pressure plate (32) is threaded with a top pressure screw (33); or, the lower end of the upper pressure plate (32) is provided with a raised limiting strip (34) that cooperates with the cast iron step.
6. The cast iron step mounting and positioning device according to claim 4, characterized in that, The positioning clamp (3) can be detached and adjusted up and down on the left upright (1) or the right upright (2).
7. The cast iron step mounting and positioning device according to claim 6, characterized in that, The lower end of the lower support plate (31) is integrally provided with a mounting base (7); the left upright (1) and the right upright (2) are provided with elongated holes (71) running through them on the left and right sides; the mounting base (7) is fitted with at least two long bolts, which are then fixed after passing through the elongated holes (71).
8. The nut of the cast iron step mounting and positioning device according to claim 1, characterized in that, The left upright (1) and right upright (2) are fitted with top wall rods (8) through the front and rear.
9. The cast iron step mounting and positioning device according to claim 8, characterized in that, The left upright (1) and right upright (2) are provided with through holes in the front and rear, and are fixedly provided with internal threaded cylinders (81). The top wall rod (8) is assembled with the internal threaded cylinder (81) and the support is adjusted by screwing it in and out.
10. The cast iron step mounting and positioning device according to claim 8, characterized in that, The top wall rod (8) has a sphere (82) at its front end and a force-applying rod (83) perpendicular to its axis at its rear end.