Stirring shaft assembling device

By combining the dummy shaft, fixed seat, support components, and level detection components, the alignment problem during the installation of the stirring shaft is solved, achieving the effects of simplified operation and improved installation accuracy.

CN121977809APending Publication Date: 2026-05-05CNR LANZHOU LOCOMOTIVE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CNR LANZHOU LOCOMOTIVE
Filing Date
2026-03-24
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

When installing the agitator shaft, it is difficult to align the flange with the through hole of the tank, which causes the agitator shaft to be misaligned, affecting normal operation and making the operation time-consuming and laborious.

Method used

The system employs a dummy shaft, a fixed base, a first support assembly, and a second support assembly. The dummy shaft provides a centering reference for the fixed base, and the dummy shaft is adjusted to a horizontal state using a level detection component and an adjustment component, ensuring that the fixed base is concentric and horizontal, thus simplifying the installation process.

Benefits of technology

This design achieves coaxial and horizontal installation of the stirring shaft, simplifying the installation process and improving installation accuracy and efficiency.

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Abstract

The embodiment of the invention provides a stirring shaft assembling device. The stirring shaft assembling device comprises a dummy shaft which is constructed to penetrate through a tank body of the mortar vehicle, a first end and a second end are formed at the two ends of the dummy shaft, the tank body is provided with a front end plate and a rear end plate, a first through hole is formed in the front end plate, and a second through hole is formed in the rear end plate. The dummy shaft is sleeved with the two fixing seats, and the two fixing seats correspond to the first through hole and the second through hole respectively. The first supporting assembly is used for supporting the first end, a horizontal detection piece is arranged on the first supporting assembly, and the horizontal detection piece is constructed to detect whether the dummy shaft is in a horizontal state or not. And the second supporting assembly is used for supporting the second end, and the second supporting assembly is constructed to be capable of adjusting the supporting height of the dummy shaft. The centering benchmark is provided for the fixed seat through the dummy shaft, so that the coaxial and horizontal mounting benchmark is provided for the mounting of the stirring shaft, the mounting precision of the stirring shaft is ensured, and the mounting process is simplified.
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Description

Technical Field

[0001] This application relates to the field of stirring shaft assembly technology, and more particularly to a stirring shaft assembly device. Background Technology

[0002] A mortar truck is a vehicle used for transporting and mixing premixed mortar. During transportation, the mortar in the tank needs to be continuously stirred to prevent it from solidifying.

[0003] The mortar truck's tank has a front and rear plate, both with through holes for mounting the mixing shaft. When installing the mixing shaft, the shaft end flange must first be aligned with the through holes on the front and rear plates. However, the diameter of the through holes on the front and rear plates is usually large, making it difficult to align the flange bolt holes with the center of the tank's through holes.

[0004] During installation, if the flange and the tank's through-hole are not concentric, the agitator shaft will become misaligned. When misaligned, the agitator shaft will rub against or become stuck against the inner wall of the tank's through-hole during rotation, affecting normal operation. In this case, the agitator shaft needs to be removed and readjusted, a time-consuming and labor-intensive process. Therefore, how to simplify the installation process while ensuring the alignment of the flange and the tank's through-hole has become a technical problem that needs to be solved. Summary of the Invention

[0005] This application provides a stirring shaft assembly device that simplifies installation while ensuring the alignment of the flange with the tank's through-hole.

[0006] This application provides a stirring shaft assembly device, including:

[0007] The dummy shaft is constructed as a tank that runs through the mortar truck. The two ends of the dummy shaft form a first end and a second end. The tank has a front end plate and a rear end plate. A first through hole is opened on the front end plate and a second through hole is opened on the rear end plate.

[0008] Two fixing seats are fitted onto the dummy shaft, and the two fixing seats are respectively set to correspond to the first through hole and the second through hole;

[0009] A first support assembly is used to support the first end. A horizontal detection element is provided on the first support assembly. The horizontal detection element is configured to detect whether the dummy shaft is in a horizontal state.

[0010] The second support assembly is used to support the second end, and the second support assembly is configured to adjust the support height of the dummy shaft.

[0011] The stirring shaft assembly device provided in this application provides a centering reference for the fixed seats using a dummy shaft. The support height of one end of the dummy shaft is adjusted by a second support component, and monitored by a level detection element on the first support component, allowing the dummy shaft to be precisely adjusted to a horizontal state. In this horizontal state, the centers of the two fixed seats, fixed with the dummy shaft as the reference, can be aligned on the same horizontal axis and concentric with the through holes in the end plates, thus ensuring the concentricity and horizontality of the fixed seats. This provides a coaxial and horizontal installation reference for the stirring shaft, guaranteeing installation accuracy and simplifying the installation process.

[0012] In one possible implementation, the stirring shaft assembly further includes a bushing that is fitted onto the dummy shaft and is detachably connected to both the dummy shaft and the fixed base.

[0013] In one possible implementation, the dummy shaft is a hollow structure.

[0014] In one possible implementation, the wall thickness of the dummy shaft is H1, which satisfies the condition: 3mm≤H1≤5mm.

[0015] In one possible implementation, the wall thickness of the dummy shaft is H1, and the wall thickness of the mixing shaft of the mortar truck is H2, where H1 and H2 satisfy the following condition: .

[0016] In one possible implementation, the first support component includes:

[0017] First support seat;

[0018] The first support member is disposed on the first support base to support the first end, and the first support member is matched with the first end.

[0019] In one possible implementation, the second support component includes:

[0020] Second support base;

[0021] The second support member is disposed on the second support base to support the second end, and the second support member is configured to match the second end.

[0022] In one possible implementation, the second support assembly further includes an adjusting member disposed on and connected to the second support base, the adjusting member being configured to adjust the height of the second support.

[0023] In one possible implementation, the second support assembly further includes a slider connected to the second support assembly, the adjusting element is a screw, a groove is provided in the second support base, the slider is slidably disposed in the groove, and the screw is threadedly engaged with the slider.

[0024] In one possible implementation, the second support assembly further includes a handle connected to the end of the adjustment member opposite to the second support member. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0026] Figure 1 This is an assembly diagram of the stirring shaft assembly device provided in the embodiments of this application;

[0027] Figure 2 for Figure 1 A schematic diagram of the structure of the first support component;

[0028] Figure 3 for Figure 1 A schematic diagram of the structure of the second support component.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10-Tank body; 11-Front end plate; 12-Rear end plate;

[0031] 100 - dummy shaft; 110 - first end; 120 - second end;

[0032] 200-Fixed base;

[0033] 300 - First support assembly; 310 - First support base; 320 - First support component;

[0034] 400 - Second support assembly; 410 - Second support base; 420 - Second support member; 430 - Adjusting member; 440 - Handle;

[0035] 500 - Horizontal inspection piece.

[0036] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0037] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of the embodiments of this application.

[0038] In the embodiments of this application, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for better describing the embodiments of this application and their implementations, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. For those skilled in the art, the specific meaning of these terms in the embodiments of this application can be understood according to the specific circumstances.

[0039] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0040] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present application described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0041] In this application, the terms "exemplarily" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplarily" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0042] Unless otherwise stated, the term "multiple" means two or more.

[0043] A mortar truck is a vehicle used for transporting and mixing premixed mortar. During transportation, the mortar in the tank needs to be continuously stirred to prevent it from solidifying.

[0044] The mortar truck's tank has a front and rear plate, both with through holes for mounting the mixing shaft. When installing the mixing shaft, the shaft end flange must first be aligned with the through holes on the front and rear plates. However, the diameter of the through holes on the front and rear plates is usually large, making it difficult to align the flange bolt holes with the center of the tank's through holes.

[0045] During installation, if the flange and the tank's through-hole are not concentric, the agitator shaft will become misaligned. When misaligned, the agitator shaft will rub against or become stuck against the inner wall of the tank's through-hole during rotation, affecting normal operation. In this case, the agitator shaft needs to be removed and readjusted, a time-consuming and labor-intensive process. Therefore, how to simplify the installation process while ensuring the alignment of the flange and the tank's through-hole has become a technical problem that needs to be solved.

[0046] The stirring shaft assembly device provided in this application includes a dummy shaft configured to penetrate the tank of a mortar truck. The dummy shaft has a first end and a second end at its two ends. The tank has a front end plate and a rear end plate. The front end plate has a first through hole, and the rear end plate has a second through hole. Two fixing seats are sleeved on the dummy shaft, and the two fixing seats are respectively configured to correspond to the first through hole and the second through hole. A first support assembly is used to support the first end. The first support assembly is provided with a horizontal detection element, which is configured to detect whether the dummy shaft is in a horizontal state. A second support assembly is used to support the second end, and the second support assembly is configured to adjust the support height of the dummy shaft.

[0047] The stirring shaft assembly device provided in this application provides a centering reference for the fixed seats using a dummy shaft. The support height of one end of the dummy shaft is adjusted by a second support component, and monitored by a level detection element on the first support component, allowing the dummy shaft to be precisely adjusted to a horizontal state. In this horizontal state, the centers of the two fixed seats, fixed with the dummy shaft as the reference, can be aligned on the same horizontal axis and concentric with the through holes in the end plates, thus ensuring the concentricity and horizontality of the fixed seats. This provides a coaxial and horizontal installation reference for the stirring shaft, guaranteeing installation accuracy and simplifying the installation process.

[0048] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0049] Please refer to Figures 1 to 3 In some embodiments, the first support component 300 includes a first support base 310 and a first support member 320. The first support member 320 is disposed on the first support base 310 to support the first end 110, and the first support member 320 is matched with the first end 110.

[0050] Specifically, the first support member 320 is matched with the first end 110. This can be understood as the first support member 320 and the first end 110 having the same or similar shape and size, thereby ensuring the stability of the first support member 320 in supporting the first end 110.

[0051] In this embodiment, the first support member 320 has an arc-shaped structure to support the first end 110, which increases the contact area between the first end 110 and the first support member 320, thereby improving the stability of the support.

[0052] In this embodiment, the first support 310 can be a frame structure composed of steel frames, such as a triangular bracket welded from structural steel. It is understood that the triangular structure has strong stability, and the first support member 320 is set at the top of the triangular structure to ensure the support effect on the first end 110.

[0053] Please refer to Figures 1 to 3 In some embodiments, the second support assembly 400 includes a second support base 410 and a second support member 420. The second support member 420 is disposed on the second support base 410 to support the second end 120, and the second support member 420 is matched with the second end 120.

[0054] Specifically, the second support member 420 is matched with the second end 120. This can be understood as the second support member 420 and the second end 120 having the same or similar shape and size, thereby ensuring the stability of the second support member 420 in supporting the second end 120.

[0055] In this embodiment, the second support member 420 has an arc-shaped structure to support the second end 120, which increases the contact area between the second end 120 and the second support member 420, thereby improving the stability of the support.

[0056] In this embodiment, the second support 410 can also be a frame structure composed of steel frames, such as a triangular bracket welded from structural steel. It is understood that the triangular structure has strong stability, and the second support 420 is set at the top of the triangular structure to ensure the support effect on the second end 120.

[0057] Please refer to Figures 1 to 3 In some embodiments, the second support assembly 400 further includes an adjustment member 430, which is disposed on the second support base 410 and connected to the second support member 420. The adjustment member 430 is configured to adjust the height of the second support member 420.

[0058] Specifically, when the horizontal detection component 500 detects that the dummy shaft 100 is not horizontal, the height of the second support component 420 can be adjusted by operating the adjustment component 430, thereby adjusting the position of the second end 120 and adjusting the dummy shaft 100 to a horizontal state.

[0059] It is understandable that, due to the dimensional difference between the through hole of the fixing seat 200 and the through hole on the end plate of the tank body 10, the fixing seat 200 can be adjusted to a certain extent within the allowable size range of the through hole during installation to achieve centering. Therefore, during the leveling process of the dummy shaft 100, it is only necessary to adjust the axis of the dummy shaft 100 to a horizontal spatial position, without having to set it at a single precise height.

[0060] Therefore, in this embodiment, the support height of the first support component 300 can be fixed, thus serving as a reference point for the dummy shaft 100. By adjusting the adjusting member 430 of the second support component 400, the support height of the second end 120 can be changed, thereby adjusting the dummy shaft 100 to a horizontal state. This simplifies the structure of the support components, thereby reducing production costs.

[0061] It should be noted that in other embodiments, the first support component 300 may also include an adjustment component 430 to adjust the support height of the first end 110 in order to achieve precise installation height adjustment. This embodiment does not impose any restrictions on this.

[0062] Please refer to Figures 1 to 3 In some embodiments, the second support assembly 400 further includes a slider connected to the second support assembly 420, the adjusting member 430 is a screw, the second support base 410 has a groove, the slider is slidably disposed in the groove, and the screw is threadedly engaged with the slider.

[0063] Specifically, the sliding component has a threaded hole, and the screw passes through the threaded hole for threaded connection with the sliding component. The second support 410 has a groove, the shape of which matches the shape of the sliding component, so that the sliding component can move within the groove and will not rotate due to the shape constraint of the groove.

[0064] When the screw is rotated, the sliding member can move linearly along the axial direction of the screw under the action of the threaded pair, thereby driving the second support member 420 to move and realize the adjustment of the support height of the second end 120.

[0065] It is understood that in this embodiment, the axis of the screw is perpendicular to the ground or the bottom surface of the tank 10 to ensure that no offset occurs when adjusting the height of the second support 420 by means of the screw.

[0066] It should be noted that the screw can be rotated manually or electrically, and this embodiment does not impose any restrictions on this.

[0067] For example, the screw is driven by a motor, which is fixedly mounted on the second support base 410. By adjusting the forward and reverse rotation and the speed of the motor, the lifting position and speed of the sliding member and the second support member 420 can be precisely adjusted, thereby achieving rapid adjustment of the support height.

[0068] Please refer to Figures 1 to 3 In some embodiments, the second support assembly 400 further includes a handle 440, which is connected to the end of the adjustment member 430 opposite to the second support member 420.

[0069] Specifically, turning the handle 440 can drive the adjusting component 430 to rotate synchronously. The operator can turn the handle 440 to drive the adjusting component 430 to rotate, thereby converting the rotational motion into the linear lifting motion of the second support component 420, thus realizing the adjustment of the support height of the second end 120.

[0070] It should be noted that, in this embodiment, a bearing is provided at the connection between the adjusting member 430 and the second support base 410. The outer ring of the bearing is fixed to the second support base 410, and the inner ring of the bearing is fixed to the outer circumferential surface of the adjusting member 430, thereby rotatably supporting the adjusting member 430 on the second support base 410. This restricts the movement of the adjusting member 430 along its own axis, so that when the adjusting member 430 rotates, it only produces rotational motion around its axis and does not undergo axial translation. Therefore, when the handle 440 is turned, the sliding member can be driven to move along the axial direction of the adjusting member 430, thereby realizing the height adjustment of the second support member 420.

[0071] Please refer to Figures 1 to 3In some embodiments, the wall thickness of the dummy shaft 100 is H1, and the wall thickness of the mixing shaft of the mortar truck is H2, where H1 and H2 satisfy the following condition: .

[0072] Specifically, if H1 is less than At this time, the wall thickness H1 of the dummy shaft 100 is too thin relative to the stirring shaft, resulting in insufficient bending stiffness of the dummy shaft 100. It cannot simulate the actual rigidity of the stirring shaft under the support state. The bending deformation generated by the dummy shaft 100 is different from the deformation of the stirring shaft under actual working conditions. As a result, the fixed seat 200, which is installed with the dummy shaft 100 as the reference, deviates from the actual installation state of the stirring shaft.

[0073] If H1 is greater than At this point, the weight of the dummy shaft 100 is close to that of the mixing shaft, which is not conducive to the installation operation and results in low installation efficiency.

[0074] Therefore, by making H1 located in and This design ensures that the bending stiffness of the dummy shaft 100 is close to that of the stirring shaft, while avoiding excessive weight of the dummy shaft 100, thereby improving installation efficiency and alignment accuracy.

[0075] Please refer to Figures 1 to 3 In some embodiments, the first support component 300 includes a first support base 310 and a first support member 320, the first support member 320 being disposed on the first support base 310 and the first support member 320 being matched with the first end 110.

[0076] Specifically, the first support member 320 is matched with the first end 110. This can be understood as the first support member 320 and the first end 110 having the same or similar shape and size, thereby ensuring the stability of the first support member 320 in supporting the first end 110.

[0077] In this embodiment, the first support member 320 has an arc-shaped structure to support the first end 110, which increases the contact area between the first end 110 and the first support member 320, thereby improving the stability of the support.

[0078] In this embodiment, the first support 310 can be a frame structure composed of steel frames, such as a triangular bracket welded from structural steel. It is understood that the triangular structure has strong stability, and the first support member 320 is set at the top of the triangular structure to ensure the support effect on the first end 110.

[0079] Please refer to Figures 1 to 3In some embodiments, the second support component 400 includes a second support base 410 and a second support member 420, the second support member 420 being disposed on the second support base 410 and the second support member 420 being matched with the second end 120.

[0080] Specifically, the second support member 420 is matched with the second end 120. This can be understood as the second support member 420 and the second end 120 having the same or similar shape and size, thereby ensuring the stability of the second support member 420 in supporting the second end 120.

[0081] In this embodiment, the second support member 420 has an arc-shaped structure to support the second end 120, which increases the contact area between the second end 120 and the second support member 420, thereby improving the stability of the support.

[0082] In this embodiment, the second support 410 can also be a frame structure composed of steel frames, such as a triangular bracket welded from structural steel. It is understood that the triangular structure has strong stability, and the second support 420 is set at the top of the triangular structure to ensure the support effect on the second end 120.

[0083] Please refer to Figures 1 to 3 In some embodiments, the second support assembly 400 further includes an adjustment member 430, which is disposed on the second support base 410 and connected to the second support member 420. The adjustment member 430 is configured to adjust the height of the second support member 420.

[0084] Specifically, when the horizontal detection component 500 detects that the dummy shaft 100 is not horizontal, the height of the second support component 420 can be adjusted by operating the adjustment component 430, thereby adjusting the position of the second end 120 and adjusting the dummy shaft 100 to a horizontal state.

[0085] It is understandable that, due to the dimensional difference between the through hole of the fixing seat 200 and the through hole on the end plate of the tank body 10, the fixing seat 200 can be adjusted to a certain extent within the allowable size range of the through hole during installation to achieve centering. Therefore, during the leveling process of the dummy shaft 100, it is only necessary to adjust the axis of the dummy shaft 100 to a horizontal spatial position, without having to set it at a single precise height.

[0086] Therefore, in this embodiment, the support height of the first support component 300 can be fixed, thus serving as a reference point for the dummy shaft 100. By adjusting the adjusting member 430 of the second support component 400, the support height of the second end 120 can be changed, thereby adjusting the dummy shaft 100 to a horizontal state. This simplifies the structure of the support components, thereby reducing production costs.

[0087] It should be noted that in other embodiments, the first support component 300 may also include an adjustment component 430 to adjust the support height of the first end 110 in order to achieve precise installation height adjustment. This embodiment does not impose any restrictions on this.

[0088] Please refer to Figures 1 to 3 In some embodiments, the second support assembly 400 further includes a slider connected to the second support assembly 420, the adjusting member 430 is a screw, the second support base 410 has a groove, the slider is slidably disposed in the groove, and the screw is threadedly engaged with the slider.

[0089] Specifically, the sliding component has a threaded hole, and the screw passes through the threaded hole for threaded connection with the sliding component. The second support 410 has a groove, the shape of which matches the shape of the sliding component, so that the sliding component can move within the groove and will not rotate due to the shape constraint of the groove.

[0090] When the screw is rotated, the sliding member can move linearly along the axial direction of the screw under the action of the threaded pair, thereby driving the second support member 420 to move and realize the adjustment of the support height of the second end 120.

[0091] It is understood that in this embodiment, the axis of the screw is perpendicular to the ground or the bottom surface of the tank 10 to ensure that no offset occurs when adjusting the height of the second support 420 by means of the screw.

[0092] It should be noted that the screw can be rotated manually or electrically, and this embodiment does not impose any restrictions on this.

[0093] For example, the screw is driven by a motor, which is fixedly mounted on the second support base 410. By adjusting the forward and reverse rotation and the speed of the motor, the lifting position and speed of the sliding member and the second support member 420 can be precisely adjusted, thereby achieving rapid adjustment of the support height.

[0094] Please refer to Figures 1 to 3 In some embodiments, the second support assembly 400 further includes a handle 440, which is connected to the end of the adjustment member 430 opposite to the second support member 420.

[0095] Specifically, turning the handle 440 can drive the adjusting component 430 to rotate synchronously. The operator can turn the handle 440 to drive the adjusting component 430 to rotate, thereby converting the rotational motion into the linear lifting motion of the second support component 420, thus realizing the adjustment of the support height of the second end 120.

[0096] It should be noted that, in this embodiment, a bearing is provided at the connection between the adjusting member 430 and the second support base 410. The outer ring of the bearing is fixed to the second support base 410, and the inner ring of the bearing is fixed to the outer circumferential surface of the adjusting member 430, thereby rotatably supporting the adjusting member 430 on the second support base 410. This restricts the movement of the adjusting member 430 along its own axis, so that when the adjusting member 430 rotates, it only produces rotational motion around its axis and does not undergo axial translation. Therefore, when the handle 440 is turned, the sliding member can be driven to move along the axial direction of the adjusting member 430, thereby realizing the height adjustment of the second support member 420.

[0097] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A stirring shaft assembly device, characterized in that, include: The dummy shaft is configured to penetrate the tank body of the mortar truck. The two ends of the dummy shaft form a first end and a second end. The tank body has a front end plate and a rear end plate. A first through hole is opened on the front end plate and a second through hole is opened on the rear end plate. A fixing seat is sleeved on the dummy shaft. There are two fixing seats, and the two fixing seats are respectively arranged to correspond to the first through hole and the second through hole. A first support component is used to support the first end. A horizontal detection element is provided on the first support component. The horizontal detection element is configured to detect whether the dummy shaft is in a horizontal state. A second support assembly is used to support the second end, and the second support assembly is configured to adjust the support height of the dummy shaft.

2. The stirring shaft assembly device according to claim 1, characterized in that, It also includes a bushing, which is fitted onto the dummy shaft and is detachably connected to both the dummy shaft and the fixed base.

3. The stirring shaft assembly device according to claim 1, characterized in that, The dummy shaft is a hollow structure.

4. The stirring shaft assembly device according to claim 3, characterized in that, The wall thickness of the dummy shaft is H1, and H1 satisfies the condition: 3mm≤H1≤5mm.

5. The stirring shaft assembly device according to claim 3, characterized in that, The wall thickness of the dummy shaft is H1, and the wall thickness of the mixing shaft of the mortar truck is H2. H1 and H2 satisfy the following condition: .

6. The stirring shaft assembly device according to any one of claims 1-5, characterized in that, The first support component includes: First support seat; A first support member is disposed on the first support base to support the first end, and the first support member is configured to match the first end.

7. The stirring shaft assembly device according to any one of claims 1-5, characterized in that, The second support component includes: Second support base; The second support member is disposed on the second support base to support the second end, and the second support member is configured to match the second end.

8. The stirring shaft assembly device according to claim 7, characterized in that, The second support assembly further includes an adjusting member disposed on the second support base and connected to the second support member, the adjusting member being configured to adjust the height of the second support member.

9. The stirring shaft assembly device according to claim 8, characterized in that, The second support assembly further includes a slider connected to the second support assembly. The adjusting component is a screw. A groove is provided in the second support base, and the slider is slidably disposed in the groove. The screw is threadedly engaged with the slider.

10. The stirring shaft assembly device according to claim 9, characterized in that, The second support assembly also includes a handle, which is connected to the end of the adjustment member opposite to the second support member.